LGD-4033 and MK-2866 Interaction

Avoid
Mechanism-based 64% confidence

LGD-4033 and MK-2866 have a potentially harmful interaction with 64% confidence. Both LGD-4033 and MK-2866 carry hepatotoxic risk. Combining hepatotoxic compounds significantly increases liver damage potential. If unavoidable, include liver support (TUDCA/NAC) and monitor ALT/AST frequently. Both compounds affect the gonads and liver and heart, so monitoring these systems is recommended.

Compound Profiles

LGD-4033

Selective Androgen Receptor Modulator | Lean Mass

LGD-4033 binds to the androgen receptor with high affinity (Ki of approximately 1 nM), functioning as a potent and selective agonist in muscle and bone tissue. Like other SARMs, its tissue selectivity is mediated by differential cofactor recruitment: upon binding to the AR, LGD-4033 induces a receptor conformation that preferentially recruits coactivators expressed in skeletal muscle and bone, while showing minimal agonist activity in androgen-sensitive tissues such as the prostate and skin.

Half-life: ~24-36 hours Typical dose: 5-10 mg/day sarm, anabolic
androgen receptorepo receptor androgenicblood pressure raisingcarcinogenic riskestrogenic
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MK-2866

Selective Androgen Receptor Modulator | Muscle Wasting Research

MK-2866 binds to the androgen receptor (AR) with high affinity and selectivity, functioning as a partial agonist in muscle and bone tissue. Upon binding, the MK-2866-AR complex undergoes a conformational change that promotes nuclear translocation and interaction with androgen response elements (AREs) on DNA, activating transcription of genes involved in protein synthesis, nitrogen retention, and myogenic differentiation.

Half-life: ~24 hours Typical dose: 10-25 mg/day oral sarm, anabolic
androgen receptormtormyostatin androgeniccarcinogenic riskhepatotoxichpta suppressive
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Combined Organ Load

Gonads
elevated
Liver
elevated
Heart
moderate

Shared Safety Flags

2x 2 androgenic compounds (LGD-4033, MK-2866). Additive androgenic load — increased risk of hair loss, acne, prostate effects.
2x 2 compounds share the carcinogenic-risk safety flag (LGD-4033, MK-2866). Monitor accordingly.
2x 2 hepatotoxic compounds (LGD-4033, MK-2866). Liver damage risk significantly increased. Include liver support (TUDCA/NAC) and monitor ALT/AST.
2x 2 HPTA-suppressive compounds (LGD-4033, MK-2866). Deep hormonal shutdown expected — plan extended PCT.
2x 2 compounds disrupt lipids (LGD-4033, MK-2866). Get lipid panel mid-cycle — consider adding lipid support.

Frequently Asked Questions

Can I take LGD-4033 with MK-2866?

Combining LGD-4033 with MK-2866 is not recommended. Both LGD-4033 and MK-2866 carry hepatotoxic risk. Combining hepatotoxic compounds significantly increases liver damage potential. If unavoidable, include liver support (TUDCA/NAC) and monitor ALT/AST frequently.

Is LGD-4033 and MK-2866 safe together?

This combination carries significant risk. Both LGD-4033 and MK-2866 carry hepatotoxic risk. Combining hepatotoxic compounds significantly increases liver damage potential. If unavoidable, include liver support (TUDCA/NAC) and monitor ALT/AST frequently. Consult a healthcare professional before combining.

What are the interactions between LGD-4033 and MK-2866?

Both LGD-4033 and MK-2866 carry hepatotoxic risk. Combining hepatotoxic compounds significantly increases liver damage potential. If unavoidable, include liver support (TUDCA/NAC) and monitor ALT/AST frequently. This assessment has 64% confidence and is inferred from pharmacological mechanism analysis.

How should I time LGD-4033 and MK-2866?

LGD-4033 has a half-life of ~24-36 hours and MK-2866 has a half-life of ~24 hours. No specific timing requirements identified for this combination, but separating administration can help monitor individual effects.

Check this pair in the full Interaction Checker Full comparison: LGD-4033 vs MK-2866

This interaction analysis is compiled from research literature and pharmacological mechanism data. This assessment is inferred from known mechanisms and may not reflect all real-world outcomes. Always consult a healthcare professional before combining compounds.