Our fitness writer found the best energy gels for running and endurance sports, including gels from brands such as Maurten, Gu, Huma, Honey Stinger, UnTapped, UCan, and more.

He's been a doctor for 20 years, and these items never leave his carry-on.

Dietary supplements can also be extracts or concentrates, and may be found in many forms such as tablets, capsules, soft gels, gel caps, liquids, or powders which includes mainly probiotics and ...