Alteril

Alteril is an over-the-counter sleep aid produced and marketed by Biotab Nutraceuticals. The makers of Alteril claim it enables "good, sound, restful sleep."

Alteril's potential efficacy is based on the effectiveness of its three primary ingredients: L-tryptophan, melatonin and valerian root. Melatonin by itself has been shown to reduce sleep onset latency, but it has not been tested in combination with the other two previously mentioned components.

Alteril is generally considered to be safe however dry mouth, headaches, allergic reactions, and nausea are cited as potential side effects. Alteril's capacity to produce its desired results has not been evaluated by the FDA.