The Supplement Dilemma
Walk into any pharmacy and you'll find shelves lined with vitamins, minerals, probiotics, and herbal supplements. The marketing promises are bold: more energy, stronger immunity, better sleep. But the science is often far more modest.
The truth: most healthy adults eating a balanced diet do not need supplements. However, certain groups can genuinely benefit.
Supplements With Strong Evidence
Vitamin D
Who needs it: Almost everyone in South Asia. Despite ample sunshine, Vitamin D deficiency is extremely common in Bangladesh due to indoor lifestyles, air pollution, and dark skin pigmentation (which reduces UV absorption).
Deficiency signs: Bone pain, muscle weakness, fatigue, frequent infections.
Recommended dose: 1,000–2,000 IU daily for adults. Up to 4,000 IU is considered safe.
Iron
Who needs it: Women with heavy periods, pregnant women, people with iron-deficiency anaemia.
Signs of deficiency: Fatigue, pale skin, shortness of breath, cold hands and feet.
Note: Never take iron supplements without a blood test confirming deficiency — excess iron is toxic.
Folic Acid (Vitamin B9)
Who needs it: Women who are pregnant or planning to conceive.
Why: Folic acid dramatically reduces the risk of neural tube defects (e.g., spina bifida) in newborns.
Recommended dose: 400–800 mcg daily, starting at least one month before conception and continuing through the first trimester.
Omega-3 Fatty Acids (Fish Oil)
Who benefits: People who rarely eat oily fish (salmon, mackerel, sardines).
Evidence for: Reducing triglycerides, modest blood pressure reduction, anti-inflammatory effects.
Note: High-dose fish oil (above 3 g/day) should be discussed with a doctor, especially if you take blood thinners.
Calcium
Who needs it: Postmenopausal women, people with lactose intolerance who avoid dairy, elderly adults.
Recommended dose: 1,000–1,200 mg daily from all sources (diet + supplement combined).
Note: Calcium supplements above 500 mg should be taken in split doses for better absorption.
Supplements That Are Largely Overhyped
| Supplement | The Claim | The Reality |
| Multivitamins | Fill all nutritional gaps | Little evidence of benefit for healthy adults |
| Vitamin C megadoses | Prevents colds | Only reduces duration slightly |
| Biotin for hair growth | Thicker, longer hair | Only works if you are biotin-deficient |
| Collagen supplements | Skin anti-aging | Limited, mixed evidence |
| Detox teas | Cleanse the liver | Your liver does this naturally |
Key Principles Before You Buy
- Get tested first. A blood test can tell you exactly what you're deficient in.
- Food first. Nutrients from whole foods are better absorbed than from pills.
- Quality matters. Look for supplements that are third-party tested.
- More is not better. Fat-soluble vitamins (A, D, E, K) accumulate in the body and can be toxic in excess.
- Tell your doctor. Some supplements interact with medications.
MediStore stocks a curated selection of quality vitamins and supplements. Browse our [Wellness category](/categories) for verified products.