Sarm Source MK 677 (Ibutamoren) is one of the best selling Sarms on the market today!! MK 677 (Iburamoren) drastically increases the release of growth hormone in the body! Reduces body fat,improves sleep and combats aging and may increase longevity. 2 capsules contain 25mg of MK677 (Ibutamoren). 2 month supply. THIS PRODUCT IS FOR RESEARCH PURPOSES ONLY. THIS IS NOT A DIETARY SUPPLEMENT. NOT FOR HUMAN CONSUMPTION. MUST BE 21 TO PURCHASE.