Primobolan (PRIMO-200) is a higher-dosed version of the anabolic steroid Methenolone Enanthate, with a concentration of 200 mg/mL instead of the standard 100 mg/mL seen in PRIMO-100.
🔍 Quick Breakdown:
| Feature | PRIMO-100 | PRIMO-200 |
|---|---|---|
| Compound | Methenolone Enanthate | Methenolone Enanthate |
| Concentration | 100 mg/mL | 200 mg/mL |
| Administration | Intramuscular injection | Intramuscular injection |
| Use | Cutting, lean gains | Cutting, lean gains |
| Half-Life | ~10 days | ~10 days |
| Aromatization | None (no estrogen conversion) | None (no estrogen conversion) |
| Water Retention | Very low | Very low |
⚖️ Pros of PRIMO-200:
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Fewer injections needed to reach target weekly dose
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Smoother blood levels (if dosed properly)
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Still very mild in terms of side effects
⚠️ Considerations:
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Some users report more PIP (post-injection pain) with 200 mg/mL due to higher oil concentration
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As with all AAS, testosterone suppression is expected — PCT recommended
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Not legal without a prescription in most countries




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