LGD-4033
Also known as: lgd4033, lgd 4033, ligandrol, vk5211, LGD 4033
SARM studied for lean muscle mass gains and strength in hypogonadal and aging populations.
Quick Reference
LGD-4033 - Research Images
PSO vial render · Scientific images from Wikipedia · Tap to enlarge
Overview
Chemical compound
LGD-4033, also known by the developmental code name VK5211 and by the black-market name Ligandrol, is a selective androgen receptor modulator (SARM) which is under development for the treatment of muscle atrophy in people with hip fracture. It was also under development for the treatment of cachexia, hypogonadism, and osteoporosis, but development for these indications was discontinued. LGD-4033 has been reported to dose-dependently improve lean body mass and muscle strength in preliminary clinical trials, but is still being developed and has not been approved for medical use. The drug is taken by mouth.
Mechanism of Action
LGD-4033, also known by the developmental code name VK5211 and by the black-market name Ligandrol, is a selective androgen receptor modulator (SARM) which is under development for the treatment of muscle atrophy in people with hip fracture. It was also under development for the treatment of cachexia, hypogonadism, and osteoporosis, but development for these indications was discontinued. LGD-4033 has been reported to dose-dependently improve lean body mass and muscle strength in preliminary clinical trials, but is still being developed and has not been approved for medical use. The drug is taken by mouth.
What Researchers Are Saying
Community Reports - Not Medical Advice
The following is aggregated from public forums, Reddit, and research communities. These are anecdotal reports from researchers only - not verified clinical data and not a recommendation of any kind.
LGD-4033 (also known as lgd4033, lgd 4033) is studied within the selective androgen receptor research community. SARM studied for lean muscle mass gains and strength in hypogonadal and aging populations.
Last updated October 28, 2026
Research status: active. LGD-4033 appears across selective androgen receptor research forums and academic literature. Researchers note this compound falls in the sarms category.
Last updated October 28, 2026
What Do You Think of This Peptide?
Share your opinion or research experience with LGD-4033. Comments are reviewed before appearing.