What is 5-HTP? Derived from the amino acid l-tryptophan, 5-Hydroxytryptophan (5-HTP) is converted in our bodies into the brain chemical messenger serotonin, a natural neurotransmitter that influences a variety of bodily functions, including sleep, appetite and mood. Why is ours better? 5-HTP is a synergistic combination of seven naturally helpful nutrients, formulated by experts for maximum benefit. It is one of our top selling products, receiving a 5-star review rating. Carefully extracted from the seeds of the West African tree Griffonia simplicifolia, our natural source 5-HTP tablets also contain a blend of B vitamins and zinc to help support your psychological and cognitive functions, as well as your energy levels and nervous system. Who is this for? 5-HTP with vitamins and zinc is an ideal vegan supplement to support your brain&’;s normal function and help deal with the challenges of your daily routine. *Vitamins B6, biotin and niacin contribute to normal psychological function and to the normal functioning of the nervous system. Zinc contributes to normal cognitive function. Made in the UK Interested in more? If you are looking for night-time support, have a look at our Night Time 5-HTP, a vegan blend of 5-HTP, B vitamins and magnesium – optimal nutrients to help you wind down at bedtime.