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Claim your listingTestosterone Cypionate/Enanthate (IM) · Clinical Reference
Frequently Asked Questions
Is intramuscular testosterone safe?
Intramuscular testosterone cypionate and enanthate have decades of safety data in men with confirmed hypogonadism. The TRAVERSE trial (2023) reported no significant difference in major adverse cardiovascular events between testosterone and placebo in middle-aged and older men with low testosterone and cardiovascular risk.
Key risks include erythrocytosis (elevated hematocrit), worsening sleep apnea, acne, and suppression of endogenous testosterone and sperm production.
What is it FDA-approved for?
Injectable testosterone esters are FDA-approved for confirmed primary or secondary hypogonadism in men. They are not FDA-approved for age-related testosterone decline alone, and the FDA has issued safety communications about overprescribing.
How is it dosed?
Typical dosing is 50–100 mg subcutaneously weekly or 100–200 mg intramuscularly every 1–2 weeks, titrated to target trough total testosterone in the mid-normal range. Smaller, more frequent doses produce more stable levels and fewer mood swings than the older every-2-week protocols.
What monitoring is required?
Standard monitoring includes total testosterone, free testosterone, estradiol, hematocrit, PSA, lipid panel, and symptom tracking. Initial labs are repeated at 3 and 6 months, then every 6–12 months.
Does it cause infertility?
Yes — exogenous testosterone suppresses LH and FSH, which can reduce sperm production substantially within months. Men who want to preserve fertility should discuss alternatives (clomiphene, hCG, or hCG + testosterone) with their prescriber before starting.
How long does it take to work?
Energy, libido, and mood often improve within 3–6 weeks. Body composition changes accrue over 3–6 months. Bone density benefits require 12+ months.
Can I get testosterone without a prescription?
No. Testosterone is a Schedule III controlled substance in the US. It can only be prescribed by a DEA-registered clinician and dispensed by a licensed pharmacy.
How do I find a doctor who prescribes testosterone cypionate?
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