You are standing in a pharmacy — or scrolling through an online store — looking at supplement bottles. The labels are dense. There are percentages, milligrams, Latin words, asterisks, and disclaimers in six-point type. It feels like it was designed to be confusing, and honestly, it often is.
The good news: only six things on any supplement label actually matter for making a good decision. Here they are in plain language.
1. Serving Size vs. Per-Tablet Dose
This is the first place labels mislead people — sometimes deliberately.
A label might say “500 mg Vitamin C” in large text. But look at the serving size. If the serving size is two tablets, that means each individual tablet contains 250 mg, not 500 mg.
Always find the serving size (usually at the top of the nutrition panel) and confirm whether the values shown are per tablet/capsule or per serving. Per serving can mean one tablet, two tablets, or more. This affects both your dose and your cost-per-dose calculation when comparing products.
2. What the % Daily Value Actually Means
% Daily Value (% DV) tells you what percentage of the recommended daily intake a serving provides, based on a reference standard. Seeing 100% DV sounds reassuring — it means you are getting the full recommended amount.
But there are two reasons to treat this number with some scepticism.
First, the % DV on Indian labels is based on ICMR reference values, which may differ from the amounts your doctor has specifically recommended for you. If your doctor says to take 2,000 IU of Vitamin D but the label shows 100% DV at 600 IU, the % DV is not your target.
Second, for fat-soluble vitamins and certain minerals, more is not always better — and very high % DV figures (300%, 500%) should prompt a question about whether that dose is appropriate rather than a sense that you are getting extra value.
Use % DV as an orientation guide, not a target.
3. “Elemental” Amounts — This Is the Number That Actually Matters
This is the most commonly misunderstood thing on a supplement label, and it is especially important for calcium and magnesium.
Supplements come in compound forms. “Calcium carbonate” is calcium bound to carbonate. “Calcium citrate” is calcium bound to citric acid. But your body only absorbs the calcium itself — not the whole compound.
A tablet labelled “500 mg calcium carbonate” only provides approximately 200 mg of elemental calcium. Calcium carbonate is roughly 40% elemental calcium by weight. The elemental amount is what matters for your dose. Look for it explicitly on the label — reputable brands will list it. If the label only says “500 mg calcium carbonate” without specifying elemental calcium, you will need to calculate it or ask the pharmacist. (Source: NIH Office of Dietary Supplements)
The same principle applies to magnesium. “Magnesium oxide 500 mg” provides approximately 300 mg of elemental magnesium.
For a broader look at how form affects supplement effectiveness, see our guide to supplements for Indian seniors.
4. Proprietary Blends — What They Hide
A proprietary blend is a mix of multiple ingredients listed together as one entry, with only the total combined weight disclosed. You might see something like “Bone Support Complex 400 mg” followed by a list of ingredients — calcium, Vitamin K, boron — but no individual amounts.
This means you have no way of knowing whether the 400 mg is mostly calcium with trace amounts of the others, or a meaningful amount of each.
Proprietary blends are legal and common. They exist to protect a manufacturer’s formula from being copied. But they make it impossible for you to verify whether you are getting a meaningful dose of any individual ingredient, or to check whether a specific component creates an interaction with your medications.
When you see a proprietary blend, treat the individual ingredients as unknowns. If a specific ingredient is why you are buying the product, look for a formulation that lists it individually with an amount.
5. Third-Party Testing and FSSAI Certification
In the Indian supplement market, quality control varies considerably. Some products are manufactured under rigorous conditions; others are not. The label’s claims are not always verified independently.
The most important marker to look for in India is FSSAI registration or licensing. The Food Safety and Standards Authority of India (FSSAI) requires dietary supplements to be registered or licensed and to carry a valid FSSAI number on the label. This is the Indian equivalent of regulatory oversight — it does not guarantee efficacy, but it does mean the manufacturer is operating within a regulated framework and that basic safety and labelling standards apply.
You can verify an FSSAI number on the official FSSAI website. A supplement without any FSSAI number should be a serious caution signal, regardless of how impressive the branding looks. (Source: Food Safety and Standards Authority of India — Regulations on Health Supplements and Nutraceuticals)
Some Indian brands also carry international third-party testing certifications — USP, NSF International, or ISO certifications. These add a further layer of quality assurance and are worth looking for if you have a choice between otherwise comparable products.
6. Expiry Date and Storage Instructions
This one sounds obvious but is frequently overlooked. Supplements can degrade before their expiry date if stored incorrectly.
“Store in a cool, dry place away from direct sunlight” is the instruction on most labels — and many medicine cabinets in Indian homes are in bathrooms, which are humid. Humidity degrades capsules and tablets faster than the expiry date assumes.
Look at the storage requirement when you buy a supplement. If it needs refrigeration (some probiotics and fish oil products do), check whether the product has been stored appropriately at the pharmacy. And if your pillbox sits in a warm kitchen near the stove, consider whether a cooler, drier location might serve your supplements better.
A supplement taken past its expiry date or stored in poor conditions may be less potent than the label suggests, even if it looks fine.
Putting It All Together at the Pharmacy
When you next pick up a supplement, run through this quick check:
- What is the serving size, and is the dose per tablet or per serving?
- Is the elemental amount listed for minerals like calcium and magnesium?
- Does the label show an FSSAI registration number?
- Are there any proprietary blends that make the dose of individual ingredients unknown?
- Does the % DV match your doctor’s specific target, or is it just a general reference?
- Is the storage instruction practical for how you will actually store it at home?
If you are trying to figure out whether your current supplements are actually covering your nutritional gaps, HelioCoach’s free 5-minute deficiency check is a useful starting point.
Frequently Asked Questions
What does elemental calcium mean on a supplement label? Elemental calcium is the amount of actual calcium available for your body to absorb. A tablet labelled “500 mg calcium carbonate” only provides about 200 mg of elemental calcium — calcium carbonate is roughly 40% elemental calcium by weight. Always check for the elemental amount when comparing calcium supplements, as this is the number that determines your effective dose.
What is % Daily Value on supplements? % Daily Value (% DV) shows what percentage of the daily recommended intake a serving provides, based on a reference standard. It is a useful orientation guide, but it should not replace your doctor’s specific dose recommendation. For seniors with particular deficiencies, the prescribed dose may be significantly higher or lower than 100% DV.
How do I check if a supplement is FSSAI certified in India? Look for an FSSAI licence or registration number printed on the label. This is the regulatory marker in India for dietary supplements and indicates the manufacturer operates within FSSAI’s framework. You can verify the number on the official FSSAI website. Avoid supplements that carry no FSSAI number.
What is a proprietary blend in supplements? A proprietary blend lists multiple ingredients together under one combined weight, without disclosing individual amounts. This makes it impossible to verify whether you are getting a meaningful dose of any specific ingredient. If a particular ingredient is why you are buying a product, look for a formulation that lists it individually with a specified amount.
How do I read a supplement label in India? Check the serving size first (per tablet or per serving). Find the elemental amount for minerals like calcium and magnesium. Look for an FSSAI number to confirm regulatory registration. Check the expiry date and storage instructions. Be cautious about proprietary blends that hide individual ingredient amounts.
The information in this article is for general educational purposes only. Please consult your doctor before starting, stopping, or changing any supplement.
