Libriol is a hybrid compound of nandrolone and methandriol, with most of its positive effects coming from the nandrolone. Noandrolone promotes muscle growth, reduces pain in the joints, increases red blood cells in the body and decreases body fat. Nandrolone converts to estrogen at a low rate making side effects such as water-retention, acne and hair loss minimal. It does lower the bodyâ€™s natural ability to produce testosterone and may cause testicular atrophy and sexual dysfunction. Methandriol, by comparison, has little anabolic effect in the body. It does, however, promote a stronger immune system. Methandriol also will cause estrogenic effects in the body such as water-retention, acne, etc. It has also shown to increase blood pressure.