It is 25 mg per ml.But it’s only a 10 ml bottle.You need 40-80 a day.The bottle was cheap,just should have bought a lot more bottles.I was too busy ordering all the other stuff I was ordering and didn’t realize it was only 25 mg’s.If it works good I will get a lot more,I ordered plenty of the orals.I was just asking if anybody used the liquid and get GOOD results?