Most research and studies involving Fadogia Agrestis have been done on animals including rats, few if any human studies have been conducted, however both mouse and rat studies have used up to 100mg/kg of Fadogia Agrestis per day. In humans this translates to 550-1100mg for a 150 pound person, 700-1450mg per day for a 200 pound person, and 900-1800mg per day for a 250 pound person. Most of the muscle builders on the market containing Fadogia Agrestis seem to hit the dosage just right. For example Hi-Tech Pharmaceuticals Testosteorne 21 contains 1200mg of Fadogia Agrestis per serving as does Competitive Edge Labs M-Test which also uses 1200mg of Fadogia per serving.