5-HTP Enhanced Advanced Formula - We supplemented 200mg of pure 5-HTP with Calcium clinically proven to increase serotonin production, creating the ideal synergistic mood booster. Promotes Relaxation – Natural 5-HTP is a 100% drug-free way to promote a calm and relaxed mood by enabling the body’s synthesis of serotonin, the chemical messenger that greatly helps in enhancing mood. Only The Best - All Bolt products are made from all-natural vitamins, minerals & herbal extracts, without the use of harmful additives; NON-GMO and free of hormones, gluten. All products are manufactured in the USA in a GMP certified laboratory with advanced 3rd party testing. 100% Drug Free – Bolt 5-HTP is a natural and drug-free supplement that is non-habit forming and safe to use. Trusted Brand - Satisfaction Assured: If our Advanced 5HTP Capsules do not bring noticeable value to you and you don't absolutely love them, your purchase is on us; No Questions Asked; Our world-class customer service wants you to be satisfied with your purchase