Testosterone heptylate is another injectable testosterone ester. The French pharmaceutical Company Laboratoire Theramex is the only firm worldwide which manufactures this compound and has been selling it under the drug name Testosterone Heptylate Theramex since 1955. Testosterone Heptylate Theramex rates high among French, Belgian, and Dutch athletes since it is readily available, extremely economical, and very effective – The compound Testosterone heptylate, like every injectable testosterone, has a strong androgenic effect which goes hand in hand with a distinct anabolic component.
Testosterone heptylate is excellent for the rapid buildup of strength and muscle mass. When looking at the gain rates of bodybuilders who use Testosterone Heptylate Theramex this steroid, milligram for milligram, seems to have a stronger effect than enanthate, cypionate, and propionate.
Testosterone propionate is a common oil-based injectable testosterone. The added propionate extends the activity of the testosterone but it is still comparatively much faster acting than other testosterone esters such as Cypionate and Enanthate. While cypionate and enanthate are injected weekly, propionate is most commonly injected at least every third day to keep blood levels steady. For strength and muscle mass gains, this drug is quite effective. With propionate, androgenic side effects seem somewhat less pronounced than with the other testosterones, probably due to the fact that blood levels do not build up as high. Users often report less gyno trouble, lower water retention and commonly claim to be harder on prop than with the others. This however is still a testosterone and, as with all testosterone products, androgenic side effects are unavoidable. It should also be noted that propionate is often a very painful injection. Users very regularly report swelling and noticeable pain for days after a shot.