Vitamin B12 is typically well-tolerated, but in very rare cases, there are serious side effects to be aware of. Learn more about them here.

Pre-workout' is primarily made up of ingredients like caffeine and creatine, as well as amino acids, nitric oxide agents and ...

Supplements can support your health—but some carry serious risks. Reviewed by Dietitian Maria Laura Haddad-Garcia Supplements can cause heart, liver, kidney and digestive side effects. "Natural" doesn ...

Medically reviewed by Kristie Reed, PharmD Protein powder can be a convenient way to boost your daily protein intake, but it ...

The NHS recommends taking vitamin D supplements during winter months to keep bones and muscles healthy, but experts warn of ...

Androstenedione is one of those supplements that was peddled to athletes for years as a quick path to bulging muscles and high testosterone levels, but it comes with some serious side effects. Also ...

For many cancer patients, hair loss is one of the most distressing side effects of their therapy. Increasingly, they have ...

Creatine is a popular supplement used to increase muscle size and strength. There are a few medications and supplements you ...

While they may be beneficial on their own, taking these supplements together could hinder absorption or be outright unsafe.

It could be your best shot at a productive day. Coffee offers a bevy of health perks, from boosting brain function and ...