I've been drinking oral minoxidil for about half a year now with good results. I take 12.5mg every night. Its easy to measure it if your minoxidil dropper has a 0.25ml, 0.50ml, 0.75ml and a 1ml measurement mark. 0.25ml is 12.5mg of minoxidil. 50mg in 1ml. The symptoms I have are mild and consistent with minoxidil in pill form. Dark circles under the eyes for a few hours ( which is why I take it before bed ). Facial bloating if you eat too much salt and increased body hair. My skin is fine. My blood pressure is also still normal.