TDT-Rapid is an injectable steroid made by Platinum Biotech, its active substance is Testosterone Propionate 100mg
Drostalone Propionate 100mg, Trenbolone Acetate 100mg. As a result of its short action, more frequent (daily) injections are required to prevent steroid blood levels from tapering down and becoming ineffective. An injection schedule of every third day is about the longest you would want to perform using propionate to achieve good results. For best results - daily injections are more suitable given the nature of this agent. Peak propionate levels take place after 24-36 hours and taper down from there.
Masteron is perhaps one of the more exotic androgenic / anabolic steroids that may be used by an athlete. Originally it was developed and used as an anti-estrogen for the treatment of breast cancer. It was largely used in combination with the SERM (Selective Estrogen Receptor Modulator) Tamoxifen (Nolvadex) for the treatment of breast cancer, and did give a significant decrease in estrogen levels in women undergoing such treatment. It is not much used these days for such purposes, for varying reasons, however for many athletes including competitive bodybuilders in particular, Masteron remains a rather unsung favourite of AS medicines.

Trenbolone Acetate is often considered the ideal muscle-building compound that can be utilized by strength athletes and bodybuilders. Its appeal is that it is strong androgen but has no estrogenic activity. This combination, along with the fat-burning properties of the drug that will be detailed later, makes it a potent compound that offers several advantages. These advantages however are tempered by some serious consequences if used improperly.
Trenbolone can affect muscle growth in several different ways, making it one of the best compounds for both maintaining and adding quality muscle mass. First, it can greatly increases the level of IGF-1 within muscle tissue. It also causes muscle satellite cells, those responsible for repairing damaged muscle fibers, to be more sensitive to IGF-1 and other growth factors. The amount of DNA per muscle cell may also be significantly increased by using trenbolone.

TDT-Rapid has a short active life of 2-3 days. It has a short half life and is active in the system only a day after injection. TDT-Rapid is one of the componenets of the four testosterone ester blend Sustanon, and, along with Phenylpropionate, is the reason why more frequent injections are required with Sustanon (to take full advantage of all esters in the blend). TDT-Rapid has the same benefits of every other testosterone along with the advantage of being fast acting. Another advantage of TDT-Rapid when compared to other steroids is that the level of water retention and water based gains on cycle are lower when compared to counterparts such as Testosterone Enanthate or Testosterone Cypionate. The benefits of testosterone, such as improved muscle pumps can be seen very soon after propionate is administered due to its short half life and related length of activation.

As a short-lived oil based injectable, most will want to opt for doses of 50 - 100 mg every day to every other day. Those of a lighter stature seeking to use it for cutting purposes may want to make that every 2nd or 3rd day, or add Proviron as a precaution instead, 50 - 100 mg/day sufficing in most cases. The site of injection is best rotated each time, or problem can occur. The compound is irritative and the damage to the skin and underlying tissue can cause some cosmetic problems if it becomes repetitive. Subcutaneously , balls of fat or tissue can build up. In most cases these need to surgically removed. So rotating is wise.
For bulking purposes one is best to stack testosterone with a base compound such as Deca Durabolin or Equipoise, and can addition Dianabol or Anadrol for 5 - 6 weeks, at the beginning, to kickstart the gains a bit. Most will choose for a more user-friendly, longer-acting testosterone for bulking purposes however. For cutting, the best and primary addition is that of Proviron, which will reduce if not stop estrogen build-up, increase muscle hardness and strength and allow for a higher free testosterone level. But naturally other compounds lend themselves quite well too. Base compounds such as Equipoise or Primobolan making a good match for longer stacks, and towards contest time steroids such as Anavar, Trenbolone or Winstrol make the best matches, as they too will help increase muscle hardness and decrease body-fat, while maintaining lean muscle mass. With testosterone, most any combination is possible. Because testosterone is always the stronger compound in a stack.
In terms of ancillaries, the use of anti-estrogens is advised. For cutting puposes one will want to run Proviron alongside the testosterone for the length of the stack, which will rarely make the use of other anti-estrogens a necessity. If no Proviron or Arimidex is used, you may want to keep some Nolvadex handy. Should problems arise starting on 20 - 40 mg of Nolvadex until a while after problems subside should be sufficient for all intents and purposes. Testosterone, being a heavily aromatizing compound, is also quite suppressive of natural testosterone so a post-cycle therapy with Nolva/Clomid and HCG is necessary. Usually one will start HCG the last week or two weeks of a stack and run it about 4 weeks. HCG shots of 1500 - 3000 IU given every 5th or 6th day. That means during the end of a cycle, one shot of HCG is given per two shots of testosterone. A user should also opt to wait on using clomid or Nolvadex until the androgen is cleared. For longer esters that was 1.5 to 2 weeks, obviously that time-frame should be reduced to 1 week or even half a week for propionate. One will then start on either 40-50 mg of Nolvadex or 150 mg of Clomid per day for a period of two weeks, and then follow it up with 20-25 mg of Nolvadex or 100 mg of Clomid per day for another two weeks. Post-cycle therapy will facilitate the return of natural testosterone and make it more likely for the user to retain most of the mass he gained while on the cycle.