While GW-501516 (Cardarine) has garnered attention for its potential fitness advantages, it is important to be aware of the potential side effects associated with its use. One primary concern relates to its impact on liver health. Animal studies have demonstrated an increased risk of liver damage and the development of liver tumours when exposed to high doses of GW-501516. However, it is crucial to note that these findings have not been replicated in human studies, and further research is necessary to fully comprehend the compound's effects on human liver health.

Another potential side effect of Cardarine is its influence on hormone levels. Some studies have suggested that GW-501516 may disrupt hormone regulation, particularly in testosterone production. This disruption could potentially lead to hormonal imbalances and related issues such as decreased libido, erectile dysfunction, and reduced muscle mass. Nonetheless, it is important to note that the available evidence is limited, and further research is required to establish a conclusive connection between Cardarine use and hormone disruption in humans.

As a result of these potential risks and side effects it is important for anyone considering using Cardarine to consult with a healthcare professional first in order to understand both the potential benefits and risks associated with using this drug.