MK-2866 vs Rosuvastatin
Moderate Research vs FDA Approved
avoid Mechanism-based · 64% Both MK-2866 and Rosuvastatin carry hepatotoxic risk. Combining hepatotoxic compounds significantly increases liver damage potential. If unavoidable, include liver support (TUDCA/NAC) and monitor ALT/AST frequently.
Molecular Data
MK-2866 Rosuvastatin
Weight 389.33 Da 481.54 Da
Half-life ~24 hours ~19 hours
Type Non-steroidal selective androgen receptor modulator (C19H14F3N3O3) Synthetic statin (C22H28FN3O6S-Ca)
Key Benefits
MK-2866
01 Increases lean body mass in a dose-dependent manner with clinical trial support
02 Preserves muscle mass during caloric deficit or catabolic conditions
03 Selective tissue activity reduces androgenic side effects compared to anabolic steroids
04 Oral bioavailability eliminates the need for injections
05 Does not aromatize to estrogen, avoiding gynecomastia and water retention
06 Improves physical function and stair-climbing power in clinical populations
07 Long 24-hour half-life allows convenient once-daily dosing
08 Mild side effect profile at commonly studied doses
Rosuvastatin
01 Most potent statin available, with LDL reductions of 45-63% depending on dose
02 Long half-life (19 hours) allows flexible once-daily dosing at any time of day
03 Effective at counteracting AAS-induced lipid disturbances, particularly elevated LDL
04 Significant reduction in high-sensitivity CRP (30-50%), indicating anti-inflammatory benefit
05 Hydrophilic structure provides hepatic selectivity with potentially fewer muscle side effects
06 Raises HDL cholesterol by 8-14%, partially offsetting AAS-mediated HDL suppression
07 Proven cardiovascular event and mortality reduction in large-scale clinical trials
08 Reduces triglycerides by 10-35%, beneficial during bulking phases or when using compounds that elevate TG
Side Effects
MK-2866
Mild testosterone suppression (dose-dependent, typically 10-30% reduction at 25 mg)
HDL cholesterol reduction (10-20% suppression observed in clinical trials)
Headaches, particularly during the first 1-2 weeks
Mild back pain or muscle cramps
Transient fatigue toward the end of longer cycles
Slight reduction in libido at higher doses or extended cycle lengths
Rosuvastatin
Muscle pain and myalgia (5-10% of users) -- the most frequently reported complaint, ranging from mild soreness to significant discomfort
Headache
Nausea and abdominal discomfort
Weakness or fatigue
Constipation or diarrhea
Contraindications
Active liver disease or significantly elevated liver enzymes
Hormone-sensitive cancers (breast, prostate) without oncologist clearance
Pregnancy or breastfeeding (potential endocrine disruption to fetus/infant)
Individuals under 21 years of age (risk of premature HPTA disruption during development)
Concurrent use of hepatotoxic medications without liver function monitoring
Known hypersensitivity to MK-2866 or any formulation excipients
Competitive athletes subject to WADA or USADA anti-doping testing
Active liver disease or unexplained persistent elevations in hepatic transaminases
Known hypersensitivity to rosuvastatin or any excipients
Pregnancy and breastfeeding (Category X -- statins are teratogenic)
Concomitant use with cyclosporine (at all doses of rosuvastatin)
Severe renal impairment (eGFR <30 mL/min) for doses above 10 mg
Research Evidence
MK-2866 Rosuvastatin
Status Moderate Research FDA Approved
References 5 studies 4 studies
Latest — 2023
FDA Approved No Yes
This comparison is for educational and research purposes only. Consult a healthcare professional before use.