Such successful muscle retention may be attributed to Anavar not aggressively shutting down endogenous testosterone production. The calculations take into account the body’s every day requirement of 1 g of protein per 1 kg of physique weight. Different reference factors are provided for athletes as a result of they've a excessive need for this connection. Some of the most important unwanted effects listed on the Anavar label embrace nausea, complications, hair loss, decreased libido, greasy skin, and skin rash.