Esters refer to different types of compounds and chemicals that manufacturers use subtly change their products. Using esters in a synthetic steroid can help the steroid better bond to receptors. This helps the steroid remain in the body and continue producing effects for more time. Though esters can take different forms depending on the product, the manufacturers of steroids often use some combination of oils or fats. When originally used in veterinary offices, Tren Acetate contained a high level of natural oils. Thoroughly mixing the steroid with the oil was the first step associated with using it. While the newer products still contain some fats, users will find that these oils don’t lead to weight gain and that they no longer need to mix the liquid.
Trenbolone acetate is a modified form of nandrolone.  The structure of trenbolone acetate is a 19-nor classification, which represents a structural change of the testosterone hormone. Trenbolone acetate lacks a carbon atom at the 19 position and carries a double bond at carbons 9 and 11. The position of these carbons slows its metabolism, which greatly increases its binding affinity to the AR, and inhibits it from undergoing aromatization into the corresponding estrogenic metabolite. Trenbolone acetate contains trenbolone modified with the addition of a carboxylic acid ester ( acetic acid ) at the 17β-hydroxyl group.  This facilitates the slow release of the AAS from the area of injection.
Please understand Tren cycles of this nature are very dangerous, they are hard on your heart and blood pressure and if you desire to remain safe they are not something you will ever want to mess with; we have simply made you aware of what some do but this does not mean you should do it to. The reality is very simple, there is hardly a man out there no matter how far advanced that needs more than 100mg of Trenbolone every other day; we can however make an exception of making this dose daily the last 10-14 days before a bodybuilding competition for a hardening affect but thats it.