Primobolan (Rimobolan) is an injectable steroid made by Bayer Schering. Primobolan is the injectable version of the steroid Methenolone.
A dose of 400 mg a week has been shown to provide decent gains, but higher doses are common, with many claiming 600 – 800 mg a week will provide a much better yield in muscle size whilst not causing too much in terms of side effects.
Side effects in general are usually not much of a problem with Primobolan,is actually considered to be one of the safest anabolic steroid. The typical safe dosage for men is 100 – 200 mg per week.