Quick Answer: This A–Z glossary defines the supplement and wellness terms you will find on product labels — including bioavailability, chelated minerals, GMP, standardised extracts, probiotics, upper limits, and more — so you can compare products, read labels confidently, and shop safely from anywhere in the world.
⚠️ Medical & Safety Notice: This glossary is for educational purposes only — it is not medical advice, diagnosis, or treatment. If you are pregnant or nursing, under 18, have a medical condition, or take prescription medication, consult a qualified healthcare professional before using any supplement. See our Website Disclaimer.
Welcome to the Recs-Medix Natural Solutions supplement and health glossary. Whether you are shopping from Nigeria, the UK, the United States, Canada, or anywhere worldwide, this plain-language reference helps you read product labels confidently, understand ingredient forms, and use supplements responsibly. Every definition is written for general consumers — no medical background required.
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A
Active ingredient
Definition: The key substance in a supplement responsible for its intended effect — for example, vitamin D3 in a vitamin D product, or curcumin in a turmeric supplement.
Why it matters: Identifying the active ingredient helps you compare products accurately and avoid unintentionally duplicating the same nutrient across multiple supplements you already take.
Safety tip: If you use more than one supplement, check each label for shared active ingredients to avoid exceeding a safe daily total intake.
Allergen
Definition: A substance capable of triggering an allergic reaction. Common allergens found in supplements include soy, milk/dairy, fish, shellfish, peanuts, tree nuts, wheat, and eggs.
Why it matters: Capsule shells, excipients, and carrier oils can all contain hidden allergen-derived ingredients — for example, fish-derived gelatine or soy-based lecithin — that may not appear prominently on the front label.
Safety tip: Always review the “Other Ingredients” section on the label as well as the Supplement Facts panel. Contact Recs-Medix Support if you need ingredient clarification before purchasing.
Amino acids
Definition: The building blocks of proteins. Essential amino acids must come from food or supplements; non-essential amino acids can be synthesised by the body.
Why it matters: Amino acids appear in muscle-support, recovery, and general-nutrition products — for example, L-carnitine, L-arginine, and branched-chain amino acids (BCAAs).
Safety tip: If you have kidney disease or take certain medications, consult a clinician before using high-dose amino acid supplements.
Antioxidants
Definition: Compounds that help protect cells from damage caused by oxidative stress (free radicals). Common antioxidants in supplements include vitamin C, vitamin E, selenium, and plant polyphenols such as resveratrol and quercetin.
Why it matters: Many wellness products reference antioxidant content, but the real-world benefit depends on the specific ingredient, dose, and your overall diet and lifestyle.
Safety tip: More is not always better. Very high doses of certain antioxidants may not be appropriate for everyone — always stay within label directions.
B
Bioavailability
Definition: The proportion of a nutrient that is absorbed into the bloodstream and made available for the body to use. Higher bioavailability means more of the ingredient actually reaches your cells.
Why it matters: Different forms of the same nutrient absorb at very different rates. For example, magnesium citrate has significantly higher bioavailability than magnesium oxide, and iron bisglycinate is better tolerated than iron sulphate.
Practical tip: Some nutrients absorb best with a fat-containing meal; others compete with minerals and should be taken separately. Always follow the label’s timing and food directions for best results.
Botanical
Definition: A plant or plant-derived ingredient — leaf, root, seed, bark, or extract — used in herbal and plant-based supplement products.
Why it matters: The botanical species, plant part used, and extraction method all influence how a product performs. Two products labelled with the same herb can differ significantly in strength and composition.
Safety tip: Botanical ingredients can interact with prescription medications — including anticoagulants, diabetes drugs, and antidepressants. Seek clinical advice if you take regular medication.
Broad-spectrum extract
Definition: An extract retaining multiple naturally occurring compounds from the source plant, rather than isolating a single compound. Also referred to as “full-spectrum” in some product categories.
Why it matters: Some people prefer broad-spectrum extracts for whole-plant complexity, while others prefer standardised isolates for precision and consistent dosing per batch.
C
Capsule
Definition: A two-piece shell — made from gelatine (animal-derived) or cellulose (plant-based/HPMC) — filled with powder, granules, or liquid supplement ingredients.
Why it matters: Capsules mask taste and odour and are generally easier to swallow than tablets or powders for many people.
Label tip: Look for “vegetarian capsule” or “vegan capsule” wording on the label or product description if you avoid animal-derived gelatine.
Chelated mineral
Definition: A mineral chemically bonded to an amino acid or organic compound to improve its absorption, stability, or digestive tolerability. Examples include zinc picolinate, magnesium glycinate, and iron bisglycinate.
Why it matters: Chelated forms are often better absorbed and gentler on the stomach than non-chelated inorganic salts such as magnesium oxide or zinc sulphate, making them a preferred choice for sensitive users.
Clinical evidence
Definition: Findings from human research studies — including randomised controlled trials (RCTs) and observational studies — investigating the safety or potential effects of an ingredient or product.
Why it matters: Human evidence is more applicable than in vitro (lab) or animal studies for evaluating supplement benefits. It helps distinguish realistic expectations from exaggerated marketing claims.
Smart shopping tip: Prioritise products with transparent labelling, third-party testing, and ingredients backed by evidence at the doses the product actually provides.
Contraindication
Definition: A specific medical condition, drug interaction, or life stage (for example, pregnancy or breastfeeding) where a supplement ingredient should not be used because of a known safety risk.
Why it matters: Contraindications are critical for safe supplement use and are often listed in the fine print on labels or product inserts — read them carefully before starting any new product.
Safety tip: When in doubt, ask your pharmacist or doctor first. You can also contact Recs-Medix Support for label guidance on any product we carry.
D
Daily Value (DV)
Definition: A reference figure used on some supplement labels — especially US-format products — showing what percentage of a recommended daily nutrient intake one serving provides.
Why it matters: DV can help you compare products at a glance, but actual daily needs vary by age, sex, health status, and diet. Other regions use equivalent references: NRV (EU), RNI (UK/WHO), and RDA (US/Canada).
Deficiency
Definition: A state in which the body lacks enough of a specific nutrient to function optimally — ranging from mild insufficiency to clinically significant deficiency with measurable symptoms.
Why it matters: Supplements can help correct or prevent nutritional deficiencies, but the most accurate assessment comes from a healthcare professional and, where appropriate, a blood test rather than self-diagnosis.
Dosage
Definition: The amount of a supplement to take, how often, and at what time — as stated on the manufacturer’s label. Also referred to as “recommended use” or “directions for use.”
Why it matters: The dose shown on the panel may refer to multiple capsules per serving. Always confirm whether the stated amount is per capsule or per serving before taking.
Safety tip: Do not exceed label directions unless under direct clinical supervision.
E
Efficacy
Definition: How well an ingredient or product works under controlled conditions, typically as measured in clinical studies. Efficacy in a trial does not automatically guarantee identical results in everyday use.
Why it matters: Real-world outcomes can vary based on individual differences, diet, lifestyle, consistency of use, and whether the product contains the ingredient at the same dose used in studies.
Electrolytes
Definition: Minerals that carry an electrical charge when dissolved in body fluid. Key electrolytes include sodium, potassium, magnesium, calcium, and chloride — they support fluid balance, nerve signalling, and muscle contraction.
Safety tip: Individuals with kidney disease, heart conditions, or those taking diuretics or blood pressure medications should seek medical advice before using electrolyte supplements.
Extract (standardised)
Definition: A plant extract adjusted during manufacturing to contain a consistent, specified percentage of a key active compound in every batch — for example, “standardised to 95% curcuminoids” or “standardised to 0.3% hypericin.”
Why it matters: Standardisation improves batch-to-batch consistency, makes products easier to compare by active dose, and helps ensure you receive the same amount of the key compound each time you purchase.
F
Fat-soluble vitamins
Definition: Vitamins A, D, E, and K. Unlike water-soluble vitamins, fat-soluble vitamins are absorbed with dietary fat and stored in the liver and body fat — meaning excess amounts can accumulate over time.
Why it matters: Because they can build up in the body, excessive long-term intake — especially from stacking multiple high-dose supplements with fortified foods — carries a greater risk than with water-soluble vitamins.
Safety tip: Avoid combining multiple high-dose products containing the same fat-soluble vitamin unless specifically advised by a clinician.
Fillers / excipients
Definition: Inactive (non-active) ingredients used to bind, coat, fill, or stabilise tablets and capsules. Common examples include microcrystalline cellulose, magnesium stearate, silicon dioxide, and rice flour.
Why it matters: While generally regarded as safe, some individuals prefer minimal additives or need to avoid specific excipients due to intolerances or dietary requirements. These are listed under “Other Ingredients” on the label.
Food supplement
Definition: A product designed to supplement the normal diet by providing vitamins, minerals, herbs, amino acids, or other nutritional substances in concentrated form. Food supplements are not medicines and are not intended to treat, cure, or prevent disease.
Why it matters: Understanding that supplements are a dietary category — not drugs — helps you set realistic expectations and use products responsibly alongside a balanced diet and healthy lifestyle.
G
Gelatine
Definition: A protein derived from the collagen of animal bones, skin, or connective tissue — commonly bovine (cow) or porcine (pig) — widely used in hard capsule shells and gummy supplements.
Why it matters: Gelatine is not suitable for vegans, vegetarians, or those following halal or kosher dietary practices without specific certification. Cellulose (HPMC) or pullulan capsules are widely available plant-based alternatives.
GMP (Good Manufacturing Practice)
Definition: A quality management system for manufacturing that ensures supplements are produced and controlled consistently, meeting established standards for ingredient identity, potency, purity, and safety at every stage of production.
Why it matters: GMP certification is one of the most important trust signals when buying supplements online. It means the manufacturer follows documented quality controls, not just internal claims.
Our commitment: Recs-Medix Natural Solutions prioritises products sourced from verified GMP manufacturers and authorised distributors. Learn more: Quality Assurance.
Gummy
Definition: A chewable, flavoured supplement format — typically made with gelatine or pectin — that resembles confectionery and is designed to improve supplement adherence.
Why it matters: Gummies can make daily supplementing easier, but often contain added sugars or sugar alcohols and may deliver lower active doses per piece compared to capsule equivalents. Always check the Supplement Facts panel to compare actual doses.
H
Herbal extract
Definition: A concentrated preparation made by drawing active compounds from a plant using a solvent such as water, ethanol, or glycerine. The extraction ratio (for example, 10:1) indicates how much raw plant material was used per unit of finished extract.
Why it matters: Both extraction ratio and standardisation level affect active potency. Two products labelled with the same herb name may contain very different amounts of the key compound — always compare standardised content rather than raw mg weight alone.
High potency
Definition: A product that contains a higher-than-average dose of an ingredient per serving — for example, a 10,000 IU vitamin D capsule compared to a standard 1,000 IU dose.
Why it matters: High-potency products may be appropriate for addressing a confirmed deficiency under clinical guidance, but they increase the importance of avoiding dose duplication when taking multiple supplements simultaneously.
Hydrolysed (protein / collagen)
Definition: A protein that has been enzymatically broken down into smaller peptide chains, making it easier to dissolve in liquid, digest, and absorb. Hydrolysed collagen (sold as collagen peptides) is a common example used in skin, joint, and recovery products.
Why it matters: Hydrolysed forms typically mix more smoothly in drinks and may be better tolerated than intact proteins by those with digestive sensitivity.
I
Interaction (drug–supplement)
Definition: A change in how a medication works — either reduced effectiveness or increased risk of side effects — caused by taking it alongside a supplement ingredient, or vice versa.
Why it matters: Well-known interaction areas include: blood thinners (warfarin + vitamin K, fish oil, or garlic), blood pressure medicines (magnesium, CoQ10), diabetes medicines (chromium, berberine), thyroid medicines (calcium, iron), and antidepressants (St John’s Wort).
Safety tip: Always inform your prescribing clinician or pharmacist about any new supplements you plan to start, especially if you are on long-term medication.
IU (International Unit)
Definition: A unit of measurement for certain vitamins and biologics based on biological activity rather than weight. Commonly used for vitamins A, D, and E. Note: 1 IU is not the same as 1 mg — the conversion differs for each vitamin.
Why it matters: Confusing IU with mg can lead to significant over- or under-dosing. For reference, 1,000 IU of vitamin D3 equals 25 mcg. Always check which unit is used on the label before comparing products or calculating total intake.
J
No current glossary entries for J. Suggest a term.
K
K2 (Vitamin K2)
Definition: A form of vitamin K that helps direct calcium to bones rather than soft tissues. Commonly listed on labels as MK-7 (menaquinone-7, fermentation-derived, longer-acting) or MK-4 (menaquinone-4, shorter-acting). Frequently combined with vitamin D3 in bone-support formulas.
Why it matters: Vitamin K2 plays an important role in both bone health and cardiovascular function, and supports the activity of vitamin D3 when the two are taken together.
Safety tip: All forms of vitamin K can interfere with anticoagulant medications such as warfarin. Seek medical advice before use if you take blood-thinning drugs.
L
Lab testing (third-party)
Definition: Independent testing by an accredited laboratory with no affiliation to the manufacturer, used to verify a supplement’s identity, potency, purity, and freedom from contaminants such as heavy metals, microbes, and pesticide residues.
Why it matters: Third-party testing provides an objective check on product quality claims and significantly reduces the risk of contamination or label inaccuracy — one of the most common quality failures in the supplement industry.
Lactose-free
Definition: Made without lactose (the naturally occurring sugar in milk). A “lactose-free” product is not necessarily “dairy-free” — it may still contain milk-derived proteins such as casein or whey.
Allergy note: If you have a milk protein allergy (not just lactose intolerance), look specifically for a “dairy-free” declaration on the product label or contact the manufacturer to confirm.
Lot / batch number
Definition: A unique code printed on product packaging that identifies the specific production batch from which a unit originated.
Why it matters: Lot numbers are essential for product traceability, quality investigations, and targeted recalls. Note the lot number if you ever need to query a product or report a concern.
M
mg / mcg (units of measure)
Definition: Two common weight units used on supplement labels. mg = milligram (one thousandth of a gram). mcg (also written μg) = microgram (one millionth of a gram). 1 mg = 1,000 mcg.
Why it matters: Confusing mg and mcg is a common and potentially significant error. For example, selenium and iodine are measured in mcg — a dose that appears small in mg terms would be a massive and dangerous overdose if misread. Always confirm the unit before comparing products.
Mineral (trace vs major)
Definition: Minerals are inorganic elements the body requires for normal function. Major minerals are needed in larger amounts — calcium, magnesium, phosphorus, potassium, and sodium. Trace minerals are needed in much smaller amounts — zinc, selenium, iodine, copper, manganese, and chromium.
Safety tip: Some minerals compete with each other for absorption — calcium and iron, for example, or zinc and copper. Follow label directions and avoid high-dose stacking of competing minerals without clinical guidance.
Multivitamin
Definition: A combination supplement providing multiple vitamins — and often minerals — in a single product, typically at or near recommended daily intake levels.
Why it matters: Useful for broad nutritional coverage, but not always optimal when targeted therapeutic doses of a specific nutrient are needed. Adding a high-dose single-nutrient supplement on top of a multivitamin requires checking for dose overlap to avoid exceeding safe upper limits.
N
NAFDAC (Nigeria)
Definition: The National Agency for Food and Drug Administration and Control — Nigeria’s federal regulatory body responsible for registering and regulating food, drugs, cosmetics, and dietary supplements distributed within Nigeria.
Why it matters: NAFDAC registration is relevant for products distributed locally within Nigeria. Most international supplement brands are registered in their country of manufacture (FDA/USA, MHRA/UK, Health Canada, TGA/Australia) and are exported under separate import rules.
International note: If you are ordering from outside Nigeria, check your country’s supplement import and customs requirements before placing an order. See Shipping & Delivery for details.
Natural
Definition: A broadly used marketing term indicating that an ingredient or product is derived from natural sources (plants, animals, or minerals) rather than synthesised in a laboratory. There is no single universal regulatory definition of “natural” for supplements across all markets.
Why it matters: “Natural” does not automatically mean safe, pure, or effective. Some natural substances can be toxic at high doses or interact with medications. Evaluate products based on transparent labelling, GMP certification, dosage, and clinical evidence — not the word “natural” alone.
O
Overage
Definition: A deliberate addition of a slightly higher amount of a nutrient during manufacturing to compensate for natural potency loss over the product’s shelf life, ensuring the label claim is still met at the expiry date.
Why it matters: A product may technically contain slightly more than the stated label amount when freshly manufactured, but this is intentional, accounted for in safety assessments, and considered acceptable under normal use guidelines.
Organic
Definition: Produced according to certified organic farming standards, which typically prohibit synthetic pesticides, GMOs, and artificial fertilisers. Certification names and standards vary by country — for example, USDA Organic (USA), EU Organic, and Soil Association (UK).
Why it matters: Organic certification does not automatically make a supplement more effective, but may be relevant to personal values or specific health goals. Organic status also does not replace the need for quality manufacturing, correct dosing, and safety checks.
P
Percent Daily Value (%DV)
Definition: A label figure — used mainly on US-format supplement products — showing what percentage of the recommended daily intake of a specific nutrient is provided by one serving. 100% DV means one serving covers the full daily reference amount for most healthy adults.
Why it matters: Products showing 200–500% DV are not automatically dangerous, but awareness of total daily intake from all food and supplement sources combined is important — especially for fat-soluble vitamins and trace minerals with established upper limits.
Potency
Definition: The amount (strength) of an active ingredient per unit dose — per capsule, tablet, or serving — as stated on the product label.
Why it matters: Comparing potency across products helps you assess value for money and avoid accidental dose duplication. Always compare the same unit (mg vs IU vs mcg) when evaluating different products side by side.
Prebiotic
Definition: A non-digestible fibre or compound that selectively feeds beneficial bacteria already living in the gut. Common prebiotics include inulin, fructooligosaccharides (FOS), galactooligosaccharides (GOS), and resistant starch.
Why it matters: Prebiotics support a healthy gut microbiome and work well in combination with probiotic products, but may cause temporary bloating or gas — especially at higher doses or when first introduced into the diet.
Probiotic
Definition: Live microorganisms (bacteria or yeasts) that, when consumed in adequate amounts, may confer a health benefit. Common probiotic genera include Lactobacillus and Bifidobacterium. Dose is expressed in CFUs (Colony Forming Units).
Why it matters: Probiotic benefits are strain-specific — different strains support different outcomes. CFU count, storage conditions, and shelf-life stability all affect product quality. Check whether a product requires refrigeration or is shelf-stable.
Storage tip: Always follow the label’s storage instructions. Some probiotics require refrigeration throughout their shelf life; others are specifically formulated to be shelf-stable at room temperature.
Proprietary blend
Definition: A mixture of multiple ingredients listed on a label under a single blend name, where only the combined total weight is disclosed — not the individual amounts of each ingredient inside the blend.
Why it matters: Proprietary blends make it difficult to assess whether each ingredient is present at a clinically meaningful dose. Where possible, prefer products that disclose the full individual amounts of each ingredient.
Q
Quality assurance (QA)
Definition: The complete system of planned activities — including raw material testing, in-process checks, finished product analysis, and documentation — designed to ensure a supplement consistently meets defined standards of identity, purity, potency, and safety.
Why it matters: Rigorous QA reduces the risk of contamination, incorrect labelling, and batch-to-batch inconsistency — three of the most common quality failures in the supplement industry. It is what separates trustworthy products from unreliable ones.
Learn more: Recs-Medix Quality Assurance.
R
RDA / RNI / NRV (reference intakes)
Definition: Internationally recognised reference values for daily nutrient intake, each used in different regions. RDA (Recommended Dietary Allowance — US/Canada), RNI (Reference Nutrient Intake — UK/WHO), NRV (Nutrient Reference Value — EU/Australia). All represent the average daily intake considered sufficient for most healthy people in a given life stage.
Why it matters: These are population-level guidelines, not personalised targets. Individual requirements can differ significantly based on age, sex, pregnancy, medical conditions, medication use, and diet. Use them as a starting reference rather than a fixed rule.
Recommended use
Definition: The manufacturer’s stated instructions on the label for how to take a supplement — covering dose, frequency, timing, and any food or water requirements.
Safety tip: Follow recommended use directions carefully. If you are under 18, pregnant, breastfeeding, or managing a chronic health condition, seek professional guidance before starting any new supplement.
S
Serving size
Definition: The quantity of product — expressed in capsules, tablets, scoops, or ml — that the manufacturer uses as the basis for all nutrient information shown on the Supplement Facts or Nutrition panel.
Why it matters: If a product states “1,000 mg per serving” and the serving size is 2 capsules, each individual capsule contains only 500 mg. Always check serving size before comparing products or calculating your daily intake.
Softgel
Definition: A one-piece, hermetically sealed soft capsule used primarily for oil-based or fat-soluble ingredients — such as omega-3 fish oil, vitamin D3, vitamin E, CoQ10, and evening primrose oil.
Why it matters: Softgels protect sensitive oil-based ingredients from oxidation and light exposure, and are often easier to swallow than hard capsules. Most softgels use a gelatine shell — look for vegan-certified alternatives if needed.
Standardised extract
Definition: A plant extract manufactured to contain a consistent, specified percentage of a key active compound in every production batch. For example, “standardised to 95% curcuminoids” or “standardised to 5% piperine.” This is the same as “Extract (standardised)” — see letter E above.
Why it matters: Standardisation ensures you receive the same active dose each time you purchase the product and makes side-by-side comparison of different brands meaningful and reliable.
Supplement Facts / Nutrition panel
Definition: The mandatory label section (required under various names in most countries) listing every ingredient, the amount per serving, the serving size, and sometimes the percentage of a daily reference value. It is the authoritative source of information about what a supplement actually contains.
Why it matters: Front-label claims such as “triple strength” or “maximum formula” are marketing language. The Supplement Facts or Nutrition panel is where the verifiable facts are. Always read this section before purchasing.
Synergy (ingredient pairing)
Definition: A formulation approach where two or more ingredients are combined because they may work more effectively together than individually. Well-established examples include vitamin D3 with vitamin K2 (bone and cardiovascular support), iron with vitamin C (improved absorption), and zinc with copper (to maintain a healthy balance between the two).
Safety tip: Synergistic combinations can also amplify interaction potential — particularly with medications. Always review contraindications for all ingredients in a combined formula and consult a clinician if you take prescription drugs.
T
Tablet
Definition: A solid, compressed dosage form made from powdered ingredients combined with binders and sometimes coatings for stability, appearance, or to control when and where in the digestive tract the tablet dissolves.
Why it matters: Tablets often allow higher doses in a smaller physical size than capsules and have a longer shelf life. Enteric or film coatings may be added to protect the stomach lining or delay release until the small intestine.
Tincture
Definition: A liquid herbal preparation made by macerating plant material in alcohol, glycerine, or a water-alcohol mixture to extract active compounds. Typically taken as drops diluted in water.
Why it matters: Tinctures allow flexible, graduated dosing and may absorb quickly when held under the tongue (sublingually). Alcohol-based tinctures are not appropriate for individuals avoiding alcohol — glycerite (glycerine-based) versions are a suitable alternative.
Tolerability
Definition: How well an individual’s body handles a supplement in terms of digestive comfort, taste, texture, or absence of adverse reactions such as nausea, bloating, or headache.
Practical tip: If a supplement causes stomach upset, taking it with food (when the label permits), switching to a chelated mineral form, or gradually increasing the dose from a lower starting point may improve tolerability. Contact Recs-Medix Support if you need product guidance.
U
Upper limit (UL)
Definition: The highest average daily intake of a nutrient that is unlikely to pose a risk of adverse health effects for almost all individuals in the general population. Established by scientific authorities such as the Institute of Medicine (US) and EFSA (EU). Not all nutrients have an established UL.
Why it matters: When stacking multiple products containing the same nutrient, the combined daily dose could approach or exceed the UL — particularly for fat-soluble vitamins (A, D, E, K) and trace minerals (selenium, iodine, zinc). Always calculate your total daily intake from all supplement and food sources combined.
USP / Pharmacopeia standards
Definition: Quality specifications published by pharmacopeial organisations — such as the United States Pharmacopeia (USP), British Pharmacopoeia (BP), or European Pharmacopoeia (Ph. Eur.) — that define standards for ingredient identity, purity, potency, and testing methods.
Why it matters: Ingredients meeting pharmacopeia standards carry a higher quality benchmark than standard food-grade alternatives. Seeing “USP grade” or “Ph. Eur.” listed for an ingredient is a meaningful and verifiable positive quality signal.
V
Vegan / vegetarian
Definition: Vegan supplements contain no animal-derived ingredients of any kind. Vegetarian supplements exclude meat and flesh derivatives, but the definition varies — some vegetarian-labelled products may still include fish-derived gelatine, lanolin-derived vitamin D3 (from sheep’s wool), or honey-derived enzymes.
Why it matters: Capsule shells, omega oils, vitamin D3, collagen, and certain enzyme products are commonly animal-derived. If you follow a vegan diet, always check both the “Other Ingredients” section and any “Suitable for vegans” certification mark on the product before purchasing.
Water-soluble vitamins
Definition: Vitamins that dissolve in water and are not significantly stored in the body — primarily vitamin C and all eight B vitamins (B1 thiamine, B2 riboflavin, B3 niacin, B5 pantothenic acid, B6 pyridoxine, B7 biotin, B9 folate, and B12 cobalamin). Excess amounts are generally excreted via urine.
Why it matters: While generally safer at higher doses than fat-soluble vitamins, very high long-term intake of some water-soluble vitamins can still cause harm — for example, excessive B6 (pyridoxine) has been associated with peripheral neuropathy. Always stay within label directions.
Wellness claim
Definition: A general statement about supporting normal body structure or function — for example, “supports immune function,” “contributes to normal energy metabolism,” or “helps maintain healthy bones.” Wellness claims are permitted for dietary supplements in most markets but must not imply the product treats or cures a disease.
Why it matters: Responsible supplement marketing focuses on nutritional support and contribution to normal health — not guaranteed therapeutic outcomes. Understanding this distinction helps you evaluate product claims critically as a consumer.
W
With food / on an empty stomach
Definition: Timing guidance on a supplement label indicating the best conditions for taking the product to optimise absorption, effectiveness, or digestive comfort.
Practical tip: Fat-soluble vitamins (A, D, E, K) and omega-3s absorb best alongside a fat-containing meal. Iron absorbs best on an empty stomach but may cause nausea — taking it with a small amount of food or alongside vitamin C can improve tolerability. High-dose magnesium can cause loose stools if taken without food. Always follow the label’s specific timing guidance for best results.
X – Z
No current glossary entries for X, Y, or Z. Suggest a term.
How to read a supplement label — a quick guide
Not sure what to check when a supplement arrives? Here are the six most important things to look at on any label before opening the bottle:
- Supplement Facts / Nutrition panel — the authoritative section listing every ingredient and its amount per serving. This is always more reliable than front-label marketing text.
- Serving size and servings per container — confirms how many capsules or tablets equal one dose, and how long the bottle will last at the stated dosage.
- Active ingredient and form — the specific chemical form (for example, magnesium glycinate vs magnesium oxide) directly affects bioavailability and tolerability.
- Other Ingredients (excipients and allergens) — check the capsule material, binders, and any allergens relevant to your dietary requirements.
- Recommended use and warnings — follow the dosage instructions precisely and read any contraindication warnings for your health status.
- Lot number, manufacture date, and expiry date — verify freshness and traceability. Keep note of the lot number in case you need to reference it later.
Need help with a specific product? Visit our FAQs or contact our support team — we are happy to help.
How we keep this glossary trustworthy
Editorial approach: All definitions are written in plain, non-medical language. We do not make guaranteed cure or treatment claims. Every entry focuses on label literacy, responsible use, and making informed purchasing decisions.
Human review: Content is reviewed by our in-house wellness and product support team for clarity, accuracy, and safety guidance. We update this page as regulations, ingredient research, and customer needs evolve. For product-specific questions, contact our support team.
Quality and sourcing: Recs-Medix Natural Solutions sources products exclusively from verified GMP manufacturers and authorised distributors. We encourage every customer to read labels and follow recommended use directions before starting any new supplement. Learn more: Quality Assurance.
International audience: This glossary is written for customers worldwide — including Nigeria, the UK, the United States, Canada, Europe, and beyond — and references both US and international labelling conventions where relevant.
Last Updated: February 28, 2026 | Last Reviewed: February 28, 2026
Disclaimer
This glossary is provided for general educational and informational purposes only. It does not constitute medical advice, diagnosis, or treatment and should not be used as a substitute for professional medical consultation. If you have a health condition, take prescription medication, are pregnant or breastfeeding, or are under 18 years of age, consult a qualified healthcare professional before using any dietary supplement. Individual results from supplement use may vary. For full site terms, notices, and legal information, refer to our Website Disclaimer.