T400 (proprionate 25mg, enanthate 188mg, cypionate 187mg) Test 400 is obviously simply a marketing trick for novice bodybuilders. mixture of Eanthate and Cypionate is pointless as they both release at the same time. The dose of 400 mg forced the manufacturer to introduce more alcohol into thy product which results in painful injections. Combined with classic testosterone side effects this is definitely not the best product out there. LONG DESCRIPTION: Test 400 wins the prize for the absolute highest concentration for any steroid in one milliliter of oil. Measuring in at an unheard of 400 milligrams. Test 400 is a blended product, with each milliliter containing 25 milligrams of testosterone propionate, 187 milligrams of testosterone cypionate and 188 milligrams of testosterone enanthate. In order to achieve such a high concentration of steroid it appears that the amount of alcohol used in the solution has been markedly increased. Without increasing the alcohol level 400 milligrams of steroid would simply be too much for the solution to dissolve. The steroid hormone is more soluble in an oily solution with heightened amounts of alcohol, which allows us to achieve a dosage otherwise not possible. The drawback however is that the alcohol makes for an irritating, almost caustic solution to inject. Users commonly report strong irritation and pain at the site of injection, in many instances requiring the user to dilute the steroid with lower dosed oil based products if Test 400 is to be continued. But for those solely interested in maximum dosage, or those willing to later dilute a steroid in order to purchase the most steroid in single vial possible, Test 400 looks like an instant winner. The design of this steroid most closely resembles that of Testoviron, containing a mix of rapid and medium/slow acting esters. In fact the only difference between the enanthate/propionate blend Testoviron and Test 400 are the dosages of the esters, and the addition of testosterone cypionate. I see no real advantage in stacking testosterone cypionate with enanthate though, as the pharmacokinetics of these two esters are literally identical. Testosterone levels peak and drop in parallel with these two agents, with no visible distinction. Upon closer investigation we see that the only advantage to adding cypionate appears to be a marketing one, as we have a product with three steroids instead of two. At least with Sustanon the release parameters are different with each ester, such that an attempt is made to integrate the four and support the balanced release of testosterone. But with test 400, having propionate and all cypionate would be totally indistinct from having propionate and all enanthate. The effects of Test 400 would be similar to that of all testosterones. Testosterone is one of the best mass-building agents, so users can expect substantial gains with this product. Testosterone is also strongly estrogenic and androgenic however, so one should expect these gains to be accompanied by equally strong side effects. This includes water retention, possible fat increases and even gynecomastia is estrogenic levels get too high, and acne, oily skin and possible hair loss from the androgenic component of this steroid. As you will see throughout this book and our discussions with testosterone, side effects can be minimized with ancillary drugs such as anti-estrogens like Nolvadex, Clomid or Arimidex, and/or the 5-alpha reductase inhibitor Proscar. Most however refrain from these drugs, enduring minor side effects unless they become a problem so as to maximize potential tissue gains (both anti-estrogens and Proscar are believed to lower the anabolic potency of a cycle based on testosterone).