Tryptophan supplements are available in various forms, including capsules, tablets, and powders. They are often marketed as natural remedies for depression, anxiety, and insomnia, as well as for ...

You can find tryptophan supplements in the form of powders, capsules, and tablets. It is advised that you speak with your doctor before supplementing, as it may not be right for everyone.

"Sleep-promoting foods include those that contain tryptophan (an amino acid that helps with the release of serotonin), magnesium, vitamin D and complex carbs," says Axe. "Foods high in vitamin C ...