FDA doesn’t approve the use of SARMs due to possible side effects. It’s important to understand that if you attempt using SARMs – you are at risk of developing side effects. That’s why you shouldn’t use them in the first place.
Anyhow, different SARMs are causing different side effects. Moreover, different people are reacting differently. Therefore, there might be a lot of different side effects. Dosage and cycle length play a very important role in side effects and their intensity. Natural testosterone production, estrogen related issues, cardiovascular problems, cholesterol negative effects, and liver toxicity are just some examples of possible SARMs side effects.