Parabolic (Trenbolone Hexahydrobenzylcarbonate) is a slow-acting injectable ester of the potent anabolic steroid trenbolone. 

Parabolic (Trenbolone Hexahydrobenzylcarbonate) is highly favored by athlete for its ability to promote the rapid buildup of strength, muscle size and definition.

Estrogenic Side Effects 

Parabolic (Trenbolone Hexahydrobenzylcarbonate) is not aromatized by the body, and is not measurably estrogenic. This steroid displays significant binding affinity for the progesterone receptor. The side effects associated with progesterone including negative feedback inhibition of testosterone production, body fat gain and gynecomastia can occur.

The use of an anti-estrogen is often sufficient to mitigate gynecomastia caused by progestational anabolic/androgenic steroids.

Androgenic Side Effects

Although classified as an anabolic steroid, androgenic side effects are still common with this substance, especially with higher doses. This may include bouts of oily skin, acne, and body/facial hair growth. 

Anabolic/androgenic steroids may also aggravate male pattern hair loss.

Women are also warned of the potential virilizing effects of anabolic/androgenic steroids. These may include a deepening of the voice, menstrual irregularities, changes in skin texture, facial hair growth, and clitoral enlargement.

Hepatotoxicity Side Effects

Parabolic (Trenbolone Hexahydrobenzylcarbonate) does not have hepatotoxic effects and therefore, liver toxicity is unlikely. Although unlikely, hepatotoxicity cannot be completely excluded, especially with high doses.