CY3 is a powerful androgen and anabolic. It has been used by athletes for several decades and has shown itself only on the positive side. Learn how to take CY3. CY3 is produced by one of the most popular sports pharmaceutical manufacturers in our country – Dragon Pharma. The active ingredient of the drug is Clenbuterol Hydrochloride, Liothyronine Sodium, Yohimbine.