Food supplements: how to choose the right formula for your needs without wasting your budget

Temporary tiredness, an unbalanced diet, limited exposure to sunlight or simply wanting a more convenient format: food supplements can meet a wide range of needs. But with so much choice available, comparing products can quickly become a headache. Between promises of a “complete formula”, XXL dosages and packs designed to last for several months, some essential details are easily overlooked.

Before placing your order, three pitfalls deserve your full attention:

• Confusing a high dosage with your actual needs: a content far above the reference nutrient value is not necessarily suitable for everyone.
• Looking only at the number of tablets: a bottle of 400 tablets may seem like good value, but you also need to check the daily dose and the amount of nutrient actually provided with each serving.
• Overlooking secondary ingredients: allergens, gelatine, sugars, sweeteners, the source of vitamin D or the form of magnesium can all affect whether a product fits your lifestyle.

What to check before choosing

1. The amount actually provided per serving

The label should state the amount of each nutrient per daily dose, not just per tablet. Also check the percentage of NRV, meaning the Nutrient Reference Value used in the European Union.

A multivitamin designed for women or men may contain many micronutrients, but the dosages are not always the same. For example, Centrum Women’s Multivitamins and Minerals provides 10 µg of vitamin D, 80 mg of vitamin C, 100 mg of magnesium and 10 mg of iron per tablet. Meanwhile, Centrum Men’s Multivitamins & Minerals contains 5 µg of vitamin D, 120 mg of vitamin C, 120 mg of magnesium and 3.75 mg of iron.

These differences are, of course, not a medical recommendation. They mainly highlight the importance of comparing the ingredients with your diet and personal needs.

2. The form of the nutrient and dietary requirements

The form of a nutrient can affect tolerance, how it is taken and whether it fits your preferences:

• Magnesium citrate is not the same form as magnesium oxide, as illustrated by the WeightWorld Magnesium Citrate and WeightWorld ZMA formulas.
• Vitamin D3 may come from lanolin, while some formulas use a plant-based source such as lichen.
• For a vegan formula, check the ingredients list, particularly the capsule composition and whether gelatine is present.
• If you are sensitive to certain ingredients, look for “gluten-free” or “lactose-free” claims, or check that no allergens are declared.
• Vitamin gummies are easy to take, but they may contain sugar or glucose syrup.

3. Format, duration and usage precautions

A larger pack can reduce how often you need to shop, provided you follow the recommended dose and storage instructions. A vitamin D3 formula providing 2,000 IU, available in a pack of 400 tablets, allows for extended use with a daily serving stated on the packaging. The version combining vitamin D3 at 4,000 IU with vitamin K2 at 125 µg, sold in a pack of 365 tablets, calls for greater care because of its high dosage. Ask a healthcare professional for advice if you are taking medication or if your circumstances require particular monitoring.

You should also avoid combining several products containing the same nutrients without adding together their daily amounts. This applies particularly to vitamin D, iron, zinc, vitamin A and vitamin B6.

Our selection based on how you plan to use them

Recommended for : Beginners on a budget

WeightWorld Multivitamins with Minerals – 400 tablets

Why this choice suits this profile : with a recommended serving of one tablet a day and a large pack, this formula is easy to incorporate into a simple, consistent routine. It is described as vegan, gluten-free and lactose-free.

How this product avoids the pitfall

The label details all 27 vitamins and minerals, along with the amount provided per tablet, making it easier to calculate the daily cost.

Main benefit and key features

400 tablets, a vegan, gluten-free and lactose-free formula, plus vitamins C, D3 and B, as well as minerals.

Recommended for : Premium supplement enthusiasts

Nutri&Co L’Antioxidant – 60 capsules

Why this choice suits this profile : this vegan formula combines grape seed extract, broccoli extract, coenzyme Q10 and vitamin C. It is aimed at consumers looking for a targeted formula rather than a simple multivitamin.

How this product avoids the pitfall

Amounts are stated for two capsules, with details of OPCs, stabilised sulforaphane and coenzyme Q10.

Main benefit and key features

Vegan HPMC capsules, free from titanium dioxide, providing 180 mg of OPCs per daily dose.

Recommended for : Specific needs and intensive users

WeightWorld Magnesium Citrate – 240 capsules

Why this choice suits this profile : people who want to target their magnesium intake will find a formula providing 222 mg of elemental magnesium per capsule, with a daily serving.

How this product avoids the pitfall

The product information clearly distinguishes between 740 mg of magnesium citrate and 222 mg of elemental magnesium – a detail that is often overlooked.

Main benefit and key features

240 capsules, a vegan, gluten-free and lactose-free formula, with a recommended serving of one capsule per day.

Recommended for : Families looking for a fun format

maxmedix Multivitamin Gummies for Kids – 120 gummies

Why this choice suits this profile : this chewable format is suitable for children aged 4 and over, under adult supervision and following the stated dose.

How this product avoids the pitfall

The minimum age, recommended dose per gummy and choking hazard are clearly stated, helping to prevent inappropriate use.

Main benefit and key features

A pectin-based formula with no gelatine, containing vitamins A, C, D3, B6 and B12, as well as zinc and iodine.

Which supplement should you choose for your main need?

• For hair, skin and nails, compare the levels of biotin and zinc, and remember to check the amount of sugar that may be present in gummies.
• To support your immune system or boost your vitamin C intake, check the amount per tablet and any precautions associated with high dosages.
• For bones, look for a calcium–vitamin D3 combination, or even D3 K2, rather than taking several similar products.
• For sleep, sleep melatonin should be used in accordance with the label, with particular care if you are taking medication.
• For the menopause, a plant- and vitamin-based menopause supplement requires careful consideration of the plants used and any potential contraindications.
• For inositol, distinguish between a formula containing myo-inositol alone and one combining myo-inositol with D-chiro-inositol.
• For iron and folic acid, ask a healthcare professional for advice before taking them over an extended period, particularly during pregnancy or while taking medication.

Food supplement FAQ

How long can a food supplement be stored?

Follow the best-before date and the storage conditions stated on the packaging. Most products should be kept in a cool, dry place, away from light and out of the reach of children. Remember to close the bottle securely after each use.

Are vegan supplements necessarily gluten-free?

No. The terms vegan and “gluten-free” refer to two separate criteria. Always check both claims on the product page and consult the ingredients list.

Can you combine several food supplements?

Sometimes, but you need to add together the daily amounts of nutrients found in multiple products. A multivitamin may already contain zinc, magnesium, vitamin D or iron. If you are pregnant, have an illness, are taking medication or regularly use several formulas, ask a doctor or pharmacist for advice.