Testosterone propionate is a fast-acting testosterone ester capable of producing impressive gains in the early stages of a cycle.
Although it takes effect quickly, it is not the fastest-acting form of testosterone; suspensions (water-based testosterone) are superior in this regard.
Because testosterone propionate is absorbed rapidly, frequent injections are required to maintain peak testosterone levels. Testosterone propionate injections can be painful, often leaving users with soreness that may even interfere with their regular training.
Advantages of Testosterone Propionate
The general benefits of testosterone propionate are typically the same as those of any other testosterone ester.
We’ve observed that users gain approximately 20 pounds of lean muscle (along with some fat loss) when using testosterone for the first time.
Strength also increases dramatically during the first few weeks and then continues to rise gradually until the end of the cycle.
In our experience, the main difference with propionate is that results occur in the early stages of the cycle, whereas slower-acting esters (such as heptanoate or cyclopentylpropionate) take longer to take effect.
However, regardless of which testosterone ester you take, the end result is the same, as they are essentially the same steroid (they simply peak at different times).
Side Effects of Testosterone Propionate
The common side effects associated with testosterone also apply to testosterone propionate, such as:
High cholesterol
Elevated blood pressure
Risk of gynecomastia
Oily skin and/or acne
Hair loss
Testosterone suppression
Rising LDL cholesterol levels and falling HDL levels are typical characteristics of taking any steroid. However, it is worth noting that in our tests, testosterone is one of the steroids with the least negative impact on cholesterol. Consequently, blood pressure may rise; however, this is usually manageable if taken in moderate doses over a limited period.
We have observed bodybuilders countering excessive blood pressure spikes by supplementing with fish oil.
Testosterone is an androgen, so water retention, bloating, and gynecomastia are all possible.
Although testosterone leads to some fat loss (due to its androgenic nature stimulating lipolysis), it is primarily used for muscle gain. Consequently, many users do not mind the temporary smooth, water-retained appearance.
We have found that SERMs, such as Nolvadex, can effectively reduce the risk of gynecomastia. The use of AIs (aromatase inhibitors) is not recommended, as blocking estrogen can worsen cholesterol and blood pressure levels, since estrogen has a positive effect on HDL cholesterol.
For some users, oily skin and acne are possible, a result of testosterone’s potent androgenic properties (which lead to increased sebum production).
Due to elevated DHT levels, thinning or loss of scalp hair is possible.
In some cases, we have observed that scalp hair thickens again as DHT levels drop after the cycle ends. However, those who take androgenic compounds long-term are more prone to permanent hair loss.
Ironically, taking testosterone causes your natural testosterone levels to plummet. However, this is the reality (as with all anabolic steroids). This occurs because the body detects exogenous testosterone, causing total levels to rise too high, which leads the body to stop producing it naturally (in an attempt to maintain internal balance).
Consequently, after a cycle ends, users experience a shutdown of endogenous testosterone and require PCT to help restore testosterone to adequate levels.
Testosterone Propionate vs. Testosterone Suspension
Testosterone suspension is pure testosterone (without an ester), so it takes effect extremely quickly.
One advantage of testosterone suspension is that it produces results faster than testosterone propionate.
However, the downside is that it requires very frequent administration (twice daily) to maintain high serum testosterone levels. This is much more frequent than the twice-weekly dosing of testosterone propionate.
Like testosterone propionate, testosterone suspension is also painful to administer.
The only situation where a testosterone suspension might be advantageous is before a competition, as it clears from the system quickly.
For example, someone might have a drug test scheduled for a specific date; if they use a suspension, they can stop taking it a few days beforehand and the test will not come back positive. This is because the detection window for a suspension is 1–2 days, and its half-life is less than 24 hours.
However, testosterone propionate, for example, can be detected for up to 2 weeks, so you wouldn’t be able to use it closer to a competition (if testing is involved).
Apart from competition purposes where you want it to clear your system quickly, bodybuilders generally don’t use testosterone suspensions because there’s no need to administer them twice daily (when you can use them once a week).
Testosterone Propionate vs. Testosterone Undecanoate
Undecanoate is an oral form of testosterone, also known by the brand names Andriol or Testocaps.
Therefore, for those who want to experience the benefits of testosterone but do not want to inject it, undecanoate is an ideal choice.
Testosterone undecanoate also takes effect quickly; in our tests, testosterone levels peaked approximately 5 hours after the first dose.
Although it is an oral steroid, undecanoate is not toxic to the liver and is absorbed via the lymphatic system.
Testosterone Propionate vs. Testosterone enanthate and testosterone cyclopentanate
Testosterone enanthate and testosterone cyclopentanate are similar esters in many ways. They are both slow-acting, so they only need to be administered once every 4–5 days (compared to testosterone propionate, which is administered every 2 days).
Due to the slower nature of heptanoate and cyclopentylpropionate, results do not occur as quickly as with propionate.
However, we have found that heptanoate and cyclopentylpropionate cause less irritation and soreness. Furthermore, in the long run, enanthate and cyclopentylpropionate are more cost-effective esters than propionate. Cyclopentylpropionate and enanthate remain the most popular esters, and for good reason: they produce the same results as propionate but are cheaper and cause fewer complications.
Testosterone propionate is not a convenient ester for our patients because it requires more frequent administration. Furthermore, compared to other testosterone esters, injections are typically less pleasant and cause more pain.
However, in appropriate circumstances, bodybuilders may choose testosterone propionate if they need it to clear their system quickly.