A substance sold in supplement form, 5-HTP is produced naturally by the body after consuming tryptophan (an essential amino acid found in foods like soy, chicken, turkey, and salmon). Since 5-HTP increases your production of serotonin (a chemical that helps regulate appetite), proponents claim that boosting your 5-HTP intake with supplements can aid in dieting.
While some research suggests that 5-HTP supplements may help reduce caloric intake in obese people, further evidence is needed. For help in losing weight, consider drinking green tea and spicing up your meals with hot peppers. Both green tea and capsaicin (a substance found in hot peppers) have been found to offer appetite-suppressing effects. Read the article: 5-HTP For Weight Loss.