Vitamins & Supplements Archive

The demand for semaglutide (Wegovy, Ozempic) and similar weight-loss drugs has renewed interest in the dietary supplement berberine. Some people say berberine suppresses appetite and promotes weight loss, but no rigorous evidence supports that claim.

A 2024 study found that dietary supplements of galantamine—which is used to treat Alzheimer's symptoms—had an inaccurate amount of the plant extract listed on the label, ranging from less than 2% to 110% of the labeled quantity.

A 2024 randomized controlled trial provides more evidence that taking a daily multivitamin pill offers protection against cognitive decline. The study involved more than 5,000 people (ages 60 or older). Some took a daily multivitamin pill. Others took a placebo. After two years and tests measuring cognitive ability before and after the study period, people who took the vitamins showed slower cognitive decline than people who took a placebo. This was seen consistently in all groups of people.

In the US, supplements are not tested in the way prescription medicines are, and their manufacturers can make claims about their abilities that may or may not be true. But there are some rules supplement makers must follow, and the FDA's plan to revamp its regulation of dietary supplements is a step toward improving consumer protection.

While most people get enough vitamins and minerals from a regular diet, they may benefit from taking a daily multivitamin supplement. These are inexpensive, are considered safe, and may help maintain brain health.

Taking supplements that contain high levels of biotin (vitamin B₇) can lead to falsely low or falsely high results on a troponin test, a blood test used to diagnose heart attacks.

A small randomized trial in 2023 found that taking two 250-mg capsules of curcumin four times a day was as effective at relieving dyspepsia symptoms as taking one daily 20-mg dose of the heartburn medication omeprazole (Prilosec, Zegerid).