Interaction Checker
Add peptides or compounds to check all pairwise interactions, cumulative organ load, and safety flags.
Cumulative Organ Load
Shared Safety Flags
LGD-4033 causes dose-dependent suppression of endogenous testosterone through HPG axis negative feedback. Some users run a low-dose testosterone base (e.g., 100-150 mg/week TRT) alongside LGD-4033 to prevent suppression-related side effects such as low libido, lethargy, fatigue, and mood disturbance. If combining, monitor total testosterone, free testosterone, estradiol, and SHBG levels. Adding exogenous testosterone converts this from a SARM-only cycle to a testosterone cycle with regulatory and health implications.
Interaction data is compiled from research literature, pharmacological analysis, and community reports. Inferred interactions are based on known mechanisms and may not reflect all real-world outcomes. Always consult a healthcare professional before combining compounds.