Trenavol-V Information (Prohormones)

Trenavol-V by Chaparral Labs

Manufactured by:
Chaparral Labs

Serving Size: 1 capsule(s)
Servings Per Container: 90
Estra-4,9-diene-3,17-dione: 30mg

Trenavol’s active ingredient is a progestin compound that does not convert at all to estrogen or DHT, and is two molecules away from Trenbolone. In fact, this prohormone is a dienolone precursor. Dienolone is a progestin, and methyl-dienolone is used for birth control. Tren has been asociated with gyno, as it directly stimulates either prolactin or progesterone receptors. Trenbolone is a progestins. It should not be confused with progesterone, but instead progestins, a type of progestogen, that can stimulate the progesterone receptor. Tren converts to a metabolite in the body that binds stronger to progesterone receptors than progesterone itself.

Directly increasing progesterone or prolactin doesnít necessarily mean you will develop gyno. Prolactin only has a stimulatory effect on gynecomastia in the prescence of high circulating estrogen levels. Testosterone, which aromotizes to estrogen, is a cause of increased prolactin. In the same study, Clomid (clomiphene) and Nolva (tamoxifen) showed a reduction in the man's high levels of prolactin. There is no research evidence to be found that points to breast development with just prolactin or progesterone alone or caused by non-aromotizing steroids without any high circulating estrogen levels. Estrogen must be at high enough levels to work synergistically with high levels of prolactin or progesterone to cause breast development and lactation.

The real solution to preventing gyno during a tren cycle is to take anti-estrogens to lower circulating estrogen levels. Even if you are taking Tren by itself, you still will have a lot of estrogen circulating in your blood for a few weeks, until your natural testosterone levels shut down. Sensitive people to gyno might have to use an anti-estrogen, even when taking tren without other estrogen converting steroids, to lower natural estrogen levels in the body.

Many bodybuilders recommend using anti-prolactin drugs. These drugs have side effects, are expensive, and not easily aquired. Reports from some users indicate bromocriptine didnít help them, but strong anti-aromatase inhibitors like letrozole did. The recommendation is to use an anti-estrogen to combat tren based gyno. The only anti-estrogen I wouldn't recommend for combatting this gyno is Nolva (tamoxifen) because in (J Steroid Biochem Mol Biol. 2003 Sep;86(3-5):461-7) they found progesterone receptor expression increased, while it decreased with other anti-aromatase inhibitors. Experienced users recommend Cholmid over Nolvadex for PCT.

Can be used as part of bulking, lean bulking, recomposition, or cutting cycles.
Due to it not being methylated, it can be stacked with select other pro-anabolic compounds.

Bottle recommended dosage is 1-3 capsules spread out daily.

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estra-4,9-diene-3,17-dione (Tren)

Estra-4,9-diene-3,17-dione is a powerful pro-steroid chemically similar to the anabolic agent Trenbolone.
Tren is a popular over-the-counter anabolic steroid/pro-hormone. Tren as a nomenclature can be confusing, as there are four different compounds commonly referred to as Tren:


Tren is a very strong non-methylated compound and can negatively impact blood pressure, lipid values, cholesterol levels and will put strain on the endocrine system. One downside of Tren is the potential of progestin induced gyno or flare ups of existing gyno. It's recommended to run P-5-P on cycle at the bottle recommended dosage. User who experience flare-ups should increase the dosage into the 150-250mg range.

When in the body, estra-4,9-diene-3,17-dione completes the conversion to Trenbolone. Trenbolone is a potent anabolic steroid, which binds to specific receptors present in reproductive tissue, muscle and fat. Trenbolone reduces nitrogen excretion from tissue breakdown (anti-catabolic). The ratio of anabolic (muscle building) effects to androgenic (virilizing) effects is a common rating of anabolic steroids. Trenbolone has a high anabolic ratio. The anabolic ratio of Testosterone is 100, but the Trenbolone's ratio is 500.