The Quiet Risk of Taking One More Supplement

By Tahani Elghazaly
Published October 27, 2026

Latest news on WhatsApp أجدد الأخبار على واتساب

By Dr Marian Asaad

A multivitamin, something for stronger hair, another product for energy: each purchase can seem reasonable on its own. Put them together, however, and the same nutrients may appear several times in a daily routine. The labels promise different benefits. The body receives the combined dose. Fortified drinks and powders can add to that total, too.

It is easy to understand the appeal. When meals are rushed and sleep is scarce, taking a supplement offers a small sense of control. We want to feel that we have done something useful for ourselves. That impulse deserves understanding. It also deserves reliable advice before another bottle joins the collection.

Availability without a prescription can make a product feel harmless. Yet dose and duration matter. Too much vitamin D can raise blood calcium and damage the kidneys. Prolonged use of high-dose vitamin B6 supplements can injure nerves, affecting sensation and balance. Being water-soluble does not make every vitamin safe in unlimited amounts.

The response should be proportionate. A basic multivitamin taken at an appropriate dose is generally unlikely to cause harm. Supplements can also be essential when someone has a deficiency or a specific nutritional need. An upper intake limit is a safety reference, rather than a daily target; individual circumstances and prescribed treatment still matter.

Nor should a reassuring blood test automatically prompt someone to stop treatment. The result may show that the treatment is working. Following gastric bypass, for example, supplements and nutritional monitoring may be needed for life. Changes belong within an agreed care plan.

A useful first step is to bring the whole collection to a pharmacist or doctor. What is each product for? Which ingredients overlap? Is the dose still appropriate? Include gummies, powders and fortified drinks. Starting a medicine or preparing for surgery is another reason to review the list, since supplements can interact with treatment or affect bleeding risk.

I believe these conversations should leave room for the circumstances behind the purchase. Someone seeking energy may need an assessment of persistent fatigue, help protecting their sleep, or enough time and money to eat regularly. Telling an exhausted person simply to “live better” offers little practical help.

Good health advice should make the next decision clearer. A supplement earns its place when we understand the need it serves, the dose to take and when to review it. Buying another bottle should never become the only way we know to respond to feeling unwell.