What is Total 5 HTP Total 5 HTP is a naturally occurring amino acid which is a precursor to the neurotransmitter serotonin. Why use Total 5 HTP Each capsule provides 50mg of 5 HTP sourced naturally from Griffonia seed. It's role as a precursor to Serotonin plays a significant role in the regulation of mood and sleep. Who can benefit These premium quality capsules offer a fantastic way for anyone seeking to naturally boost their 5 HTP levels. To be taken as part of a varied and balanced diet and a healthy lifestyle.