Supplements can fill real gaps — but a balanced plate covers most people most of the time. Here's how to spend wisely.

Who genuinely benefits

  • Pregnant women — folic acid before and during early pregnancy is one of the best-proven supplements there is; iron is commonly needed too.
  • Older adults — vitamin D and B12 absorption declines with age.
  • People on restricted diets — vegans need B12; anyone avoiding dairy should watch calcium.
  • Diagnosed deficiency — iron, vitamin D or B12 confirmed by a blood test should be treated, at the dose your clinician recommends.

Where evidence is thin

Mega-dose vitamin C for colds, "detox" blends and most "immune booster" mixes have weak evidence behind them. If a label promises to cure many unrelated things at once, be skeptical.

Three practical rules

  1. Food first — supplements top up a diet, they don't replace one.
  2. More is not better — fat-soluble vitamins (A, D, E, K) accumulate and can reach harmful levels.
  3. Tell your pharmacist what else you take — supplements can interact with prescription medicines (St John's Wort and warfarin is a classic example).

Unsure what you need? Bring your questions — or your blood-test results — to any Medicrest Plus pharmacist. It's free.