Walk into any pharmacy in Accra and you will find an entire aisle of vitamins, minerals, and supplements, each promising to boost your energy, strengthen your immunity, or sharpen your focus. Some of them are genuinely useful. Many of them are not necessary for most people. And a few of them can cause real harm when taken incorrectly or alongside prescription medications.

The starting point is honest: for people eating a reasonably varied diet, most vitamin supplements offer limited benefit. The body absorbs nutrients most efficiently from food, not capsules. If your diet includes adequate vegetables, protein, whole grains, and some dairy or fortified foods, you are likely meeting most of your requirements.

That said, specific populations have specific needs. Vitamin D deficiency is genuinely common, even in sun-rich countries like Ghana, largely because many people spend most of their day indoors. Vitamin D supports bone health, immune function, and mood regulation, and a simple blood test can confirm whether your levels are adequate. Pregnant women need folate before and during early pregnancy. People with restricted diets, elderly patients with reduced absorption, and individuals with certain chronic conditions may have genuine supplementation needs.

The risk most people do not think about is oversupplementation. Fat-soluble vitamins, including A, D, E, and K, accumulate in the body rather than being flushed out in urine. Taking high doses over months can reach toxic levels. Vitamin A toxicity, for example, causes liver damage and bone complications. The supplements most likely to cause problems are the ones people take casually without reading dosage information.

Drug interactions are the other major concern. Vitamin K interferes with warfarin. High-dose calcium competes with certain antibiotics. Fish oil and vitamin E both have blood-thinning effects. Before adding any new supplement to your routine, particularly if you are on prescription medication, check with your pharmacist.

The honest bottom line: eat well, check specific deficiencies with a blood test, and supplement deliberately rather than broadly. Your pharmacist can help you figure out what you actually need.