Which supplements are of most interest for energy and fatigue?

Getting enough essential vitamins and minerals (e.g., iron for blood cell function, B-complex vitamins for metabolism support) is foundational in any approach designed to address fatigue, which means that supplementation can be beneficial if the diet does not provide enough of these nutrients.

The most common supplements used for increasing mental and physical energy are stimulants (e.g., caffeine, guarana). Supplements that improve cognitive function, like nootropics, are also related to increasing energy.

Supplements that increase endurance, support fatigue resistance, promote stress tolerance, or have another effect on enhancing exercise (such as ergogenics) are relevant to energy and fatigue.