What is Nandrolone Phenylpropionate (Deco, Durabolin)
Testosterone propionate - one of the most demanded steroids in bodybuilding steroids. Testosterone propionate is intended for muscle mass development and strength, but due to its action peculiarities, it is more often used during the drying period. Is one of the testosterone esters. Among the main modern manufacturers of propionate are BP (Balkan Pharmaceuticals), 7Lab Pharma, Switzerland, SP laboratories, Kalpa Pharmaceuticals 18.
Testosterone Propionate was discovered in 1936 and was introduced for medical use in 1937. It was the first testosterone ester to be marketed and was the testosterone main form used in medicine until 1960 Steroid profile
Testosterone is a hormone that serves as the main molecule for most hormonal ( androgenic ) drugs. By changing the testosterone molecule (adding or removing atoms), one or another drug is synthesized. So, for example, testosterone propionate is a testosterone molecule to which a propionic acid ester is attached, and it is this that determines the pharmacological properties and features of the substance action.
• Anabolic activity - 100% of testosterone
• Androgenic activity - 100% of testosterone (high)
• Aromatization (conversion to estrogens ) - high (there is a need for antiestrogens)
• Suppression of the hypothalamus-pituitary-testes axis - expressed
• Liver toxicity - none
• Administration method - injection
• Action duration - 2-3 days
• Half-life and MRT (w/m) - 0.8 days and 1.5 days, respectively.
• The propionate activity peak occurs on the injection day and gradually decreases within 24-36 hours after injection.
• Detection time - 40-60 days
Testosterone propionate action
• It specifically initiates gene transcription, whereby it changes the nitrogen balance in a positive direction.
• Increases the level of insulin-like growth factor in muscles and liver
• It causes the satellite cells proliferation in the muscle tissue
It should be noted that all others have the same action mechanisms, the difference lies in the activity and action predominant direction.
• Increased muscle mass
• Burning fat
• Bump increase
• Increase in strength indicators
• Increased libido.
• Reducing the cholesterol level in the blood
• Reducing cardiac ischemia risk and coronary heart disease
It has a short action time. Injections are usually performed every other day. This is one of the using propionate main disadvantages, in comparison with its longer-lived counterparts, for example, with enanthate. The second main disadvantage is the higher cost compared to the same enanthate. It can be used both when working on the ground and during the drying period.
It is worth noting that the drug short action can be a plus. The fact is that each organism is individual and reacts to the drug in different ways. There are intolerance cases to the drug components (as a rule, to the so-called solvent - oil, which contains testosterone), which may be accompanied by an allergic reaction. Because this drug is rapidly absorbed, an allergic reaction (if any) can also pass relatively quickly without causing serious harm to the athlete health.
Another drug feature is that, with correctly selected dosages, most athletes do not retain water in the body, or these manifestations are minimal. Therefore, testosterone propionate does not cause a sharp increase in body weight by 5-6 kg in a couple of weeks, as when using the same enanthate, but the muscle mass gained with the use of propionate will be drier and of better quality. Once in the body, it is quickly absorbed into the bloodstream, so the propionate can be felt after the first injection. And it is also quickly output. For the above reasons, when working on weight, athletes prefer enanthate, and propionate is more often used for drying. Suitable for athletes of all skill levels, from beginners to the most experienced.
It may be like the only steroid on the "cycle", but the best effect is achieved when combined with other drugs. Athletes who are beginning to use anabolic drugs can be recommended dosages of 50 mg of propionate every other day. The usual dosage for more experienced athletes is 100 mg propionate daily and above.
Be sure to take anti-estrogen drugs, for example, Proviron or aromatase inhibitors according to the standard regimen, starting from the second week to avoid gynecomastias development and other estrogenic effects. After the introduction end, post-cycle therapy is carried out, the most often used is tamoxifen. Also at the exit, it is desirable to take cortisol blockers, to maintain the gained mass. Be sure to follow the weight gain diet and take sports nutrition.
Propionate side effects
On drying, it is well combined with stanozolol, trenbolone acetate, masteron, primobolan and some other drugs. Propionate is included in testosterone esters mixtures such as sustanon or omnadren, as an indispensable component that allows to immediately feel the steroid work.
Example cycle for beginner "chemists" for drying based on propionate:
• Propionate 50 mg every other day
• Winstrol 30 mg per day, starting at 10 mg and adjusting the dose to the optimal one within 1 week.
• After 6 weeks, anabolic drugs should be cancelled and after 3-4 days start PCT.
In this course, the drugs action synergism is manifested, which means that their simultaneous use total effect is greater than the effects simple sum if they were used each separately, at the same time the side effects risk is reduced. Some experienced athletes inject propionate locally into the target muscle, such as the biceps, deltoids, and calves when working on weights, but this approach has not been proven to be effective.
Any steroid form has only a resorptive effect, while there is no local effect on the muscle. If the drugs were administered intramuscularly to stimulate local hypertrophy of these muscle cells, it would be possible to observe an asymmetric growth that looks similar to the results obtained using synthol.
Propionate side effects
The most common complaint is pain, irritation and redness at the injection site, which is further exacerbated by the need for a high execution frequency. A pronounced increase in aggression.
The testosterone propionate side effects are because it is easily aromatized and converted to estrogens and dihydrotestosterone, like any other testosterone ester, at high dosages can cause:
• The scalp baldness
• Hirsutism (body hair)
• Enlarged prostate (especially in the elderly)
• Masculinization (in women)
The drug suppresses its testosterone production, which is usually restored at the end of the course in 2-3 months. With long courses, it is necessary to administer gonadotropin 500 IU, once a week, starting from 2. As practice shows, in moderate doses, it does not affect either the liver, the kidneys, or any other internal organs. Not recommended for use by women due to its high androgenic activity.