Description
What it is and How it Works
Testosterone Cypionate (Test C) is a long-acting ester of Testosterone, very similar to Testosterone Enanthate. Once injected, it gradually releases Testosterone into circulation, maintaining elevated hormone levels for several days. This makes it one of the most popular options for TRT and bodybuilding cycles.
Testosterone promotes protein synthesis, nitrogen retention, and increased red blood cell production. The result is improved muscle growth, strength, recovery, and overall physical performance. It also converts into estradiol and DHT, which are critical for sexual health, mood stability, and general well-being.
Potential side effects include water retention, acne, oily skin, accelerated hair loss in those genetically predisposed, gynecomastia due to estrogen conversion, and cardiovascular strain from raised hematocrit or cholesterol imbalance.
How is it used?
Testosterone Cypionate has a slightly longer half-life than Testosterone Enanthate, though in practice the difference is minimal. Most users consider the two interchangeable. Its long action allows for less frequent injections compared to shorter esters such as Testosterone Propionate.
Typical injection frequency is every 3 to 5 days to maintain stable levels. Some users inject only once per week, but this can lead to fluctuations in Testosterone and estradiol levels. Full saturation generally occurs after 4 to 5 weeks of consistent use.
Dose
This product is dosed at 250mg/ml × 10ml. It is commonly used for TRT at 100 to 200mg per week, and in performance cycles at 250 to 500mg per week.










IFBB Nick –
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Da Rock –
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Markey –
Without a doubt one of the best stores on the market.
Tx Mass Monster –
Found Premier Labs by accident and glad I did. These guys products, pricing and service 5 stars all around
Berry –
Some of the smoothest test Ive used. Great products
XXX Threat –
Been using these guys for years. Banx is always there to help
Kevin –
If youre reading this, then you have found one of the best sources there is.
Justin –
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Chris T –
Some of the smoothest Test C Ive ran, tested high as it should. Thanks guys.
MnL at ProFit –
If youve found these guys you found a gold mine A+ plus, products, prices and services.
Coda –
Was referred to these guys from a dude in the gym. Had he not swore by them, I dont know if I would have tried them, prices seem to good for domestic. They are my only source now.
Jonah –
Prices could be better, but paying with credit card makes it worth it.
Randy –
Definitely some of the best Test Ive had in a while. smooth and very cost effective.