What Is Myvitamins 5-HTP? Myvitamins 5-HTP is a convenient source of 5-Hydroxy L-Tryptophan. This naturally occurring amino acid is used by the body to create the neurotransmitter, serotonin. Our serotonin levels can impact our sleep, mood and appetite. Why Use Myvitamins 5-HTP? Lots of us find it difficult to get a restful night’s sleep, and nutrition can play a large part in this. Our 5-HTP Capsules are a high-quality supplement, designed to support your evening routine from within. What Works Well With Myvitamins 5-HTP? Support your energy levels throughout the day with our ZMA Capsules. They’re formulated with vitamin B6, an essential nutrient which helps to reduce feelings of tiredness (1) and supports normal energy-yielding metabolism. 2 References 1. Vitamin B6 contributes to normal energy-yielding metabolism. 2. Vitamin B6 contributes to a reduction in tiredness and fatigue.