Hyper Pharma Test Isocaproate

Hyper Pharma Testosterone Isocaproate is a medium-length ester testosterone with a half-life of approximately 4-5 days, sitting between the fast-acting Propionate and the long-acting Decanoate. Testosterone Isocaproate is one of the four esters in Sustanon 250 and is rarely available as a standalone product, making this offering from Hyper Pharma unusual and appealing to users who want a single medium-ester testosterone for specific cycle designs.

Why Choose Isocaproate?

The Isocaproate ester provides a balanced release profile: faster onset than Enanthate (effects noticeable within 1-2 weeks) but less frequent injection requirements than Propionate (twice weekly is sufficient). It is an ideal standalone testosterone for users who want something between the extremes of fast and slow esters. It clears faster than Enanthate, allowing PCT to begin approximately 10-12 days after the last injection rather than the standard 14 days.

Suggested Protocol

• Dose: 300-500mg per week for 10-12 weeks
• Injection frequency: twice per week
• AI if needed: Aromasin or Arimidex
• PCT start: 10-12 days after last injection
• PCT: Nolvadex 40/40/20/20mg for 4 weeks

Key Facts

• Active ingredient: Testosterone Isocaproate
• Manufacturer: Hyper Pharma
• Half-life: approximately 4-5 days
• Aromatisation: yes (standard for all testosterone)
• Liver toxicity: none (injectable)

Compare all testosterone esters in our Test E Guide. For the multi-ester approach, see Sustanon 250. Browse all injectables.