Exceeding dosage may be mental and physical stimulation, followed by insomnia and aggressive behavior. It is not excluded and the effect on the liver in the form of increased liver enzymes that can occur with repeated use of excessive doses. If you make a course right to control your body under the supervision of a specialized physician and not neglect all the recommendations, side effects can be avoided. Primobolan has toxic effects on the liver, but it is weak. It shall be noted, that women often find Nibal acceptable to use to improve physique. The compound belongs to the class of anabolic steroids, but androgenic side effects of Nibal are still possible. This may be oily skin, acne, alopecia, increased facial/body hair growth, etc. High doses are likely to cause them.