Being c17alfa-alkylated anabolic, Stanozolol tablets can be hepatotoxic for you liver so do not use oral Stanozolol for more than 6-8 week, or better prefer the injectable form to pills. Negative effect of Winnie V on the level of cholesterol is also declared. So you should check out the level of cholesterol from time to time on a regular basis. Winny V as almost all anabolic steroids, inhibits your own natural testosterone production. Acne, hair loss, prostate enlargement and virilization are other side effects. As it has been already said, to avoid undesirable side effects the time and the dosage of using should be strictly supervised.