SSKI works so fast, your body will soon tell you if 3 drops is too much, or even too little. Each drop is 30-32 mg potassium iodide, or roughly 24 mg iodide. As Trapper said, the first-time zing won't stick around. Take it only in the morning. You were drawn to try 3 drops -- keep doing it till you get a different message. You're a sophisticated supplement taker. Trust yourself on this, too.