There are many possible side-effects associated with the use of Testosterone Phenylpropionate. This product also has a high level of aromatization into estrogen and coverts to DHT (dihydrotestosterone) as well. Conversion to estrogen, the female sex hormone, creates a high risk of gynecomastia (formation of breast tissue in males) and water retention.
Supplementing Testosterone into your body will result in the shutting down of the body’s natural production of the hormone. The severity of side effects depend mostly on the dose and duration of circulating free testosterone and its conversion to substrates. Testosterone’s anabolic/androgenic effects are dependant upon dosage, therefore, the higher the dose the higher the muscle building effect. Testosterone also promotes aggressive and dominant behavior.
I recently had the opportunity to try Testosterone Phenylpropionate in one of my cycles. I think that the primary advantage of this stuff is that underground manufacturers are not scared to dose it at 200 mg/ml, unlike other short(ish) esters like propionate…where 100 mg/ml is the typical dose.
I was using it at 200 mg every other day, and found that was enough to raise my testosterone levels to roughly 1.5x the high end of normal.
My gains on Testosterone Phenylpropionate were typical of any kind of testosterone I have ever used (regardless of ester) although the water retention was similar to Testoviron Testosterone Propionate (low).
Although it wasn’t necessary, I chose to inject every other day although the active life of this compound would have allowed me to inject once every third or even fourth day. It’s a natural match in a cycle with Testosterone Phenylpropionate, as both can be injected on the same day with the same frequency.
Since water retention is low with this compound, it is probably the most versatile form of esterified testosterone available on the market…it builds mass like the long esters, doesn’t require very frequent injections, and doesn’t cause water retention like Testosterone Cypionate or Primoteston Depot Testosterone Enanthate.