Ostarine (MK-2866) SARM Guide

Ostarine (MK-2866) is one of the oldest and most well-researched SARMs. It is known for being milder than other SARMs like RAD-140 or LGD-4033, making it a popular choice for beginners or for use during cutting (fat loss) phases. Its primary benefit is its ability to preserve lean muscle mass while in a caloric deficit, which is a major challenge during dieting. It can also produce modest, high-quality ("dry") gains in muscle and strength. While it is less suppressive of natural testosterone than other SARMs, it is not without suppression, and at higher doses, it will still significantly lower natural testosterone levels. Its ability to help improve body composition by preserving muscle while losing fat can have a positive impact on metabolic health and therefore biological age. However, as with all compounds in this class, it remains an investigational drug with unknown long-term risks.