The Mucuna pruriens I tried was from Banyan Botanical and was bought as bulk herb in a half pound quantity. I was mixing about a heaping table spoon in water and slugging it down. I was taking about 30 grams a day. I know Marty Hinz says Mucuna taken without other amino acids can cause depression and that is what happened to me, it seems. Still it seems other folks get good results from mp.