Studies that have been done on Griffonia simplicifolia suggest that when supplemented as an herb, it may rival the effects of supplementing 5-HTP in isolation. However, further research is needed to confirm this effect. There may be other bioactives in the plant that are still undiscovered. Additional studies are needed to determine whether supplementing Griffonia simplicifolia is truly comparable to supplementing 5-HTP.5-HTP is the precursor to serotonin, the neurotransmitter sometimes touted to be responsible for happiness. 5-HTP is a simple way to increase brain serotonin levels by bypassing the rate-limiting step, and users reap either the rewards or the hazards of increased brain serotonin.
Green Coffee extract is produced by using unroasted coffee bean. The extraction process aim to concentrate the Chlorogenic acids, molecules having small phenolics bound to a Quinic acid group.
The Chlorogenic Acids in Green Coffee Extract are readily absorbed, and they themselves or their metabolites (such as ferulic acid) mediate many of the benefits of Green Coffee Extract.
Green Coffee Extract may weakly reduce body weight in overweight and obese persons (the mechanisms involved in this remains currently unknown, thought to be related to preventing carbohydrate uptake from the intestines after a meal). Some studies suggest that green coffee supplementation improve the blood health by increasing vasoreactivity and lowering blood pressure. This improvement benefit mainly to benefit people with poor vascular function or high blood pressure. Some studies have attributed this property to the ferulic acid metabolite.
Our opinion: Green Coffee Extract is a good and healthy ingredient. However, for validated all the benefits it is touted for, more studies should be done and we still consider that it seems to not be as efficient as some other supplements.