The FDA attacked arimistane (also known as “Androsta-3,5-Diene-7,17-Dione”, “3-deoxy-7-oxo-DHEA”, or sometimes “3,7-keto DHEA”) by claiming that VMI Sports was perpetuating false claims about the health benefits of the ingredient. They even classified arimistane as a “new drug”.They cited section “201(p) of the FD&C Act”[1] as evidence for this claim.

When should I take estrogen blockers during cycle?

When do I take an Estrogen Blocker? Estrogen blockers can be taken during or after a prohormone cycle. When taken during a cycle, they are used to limit estrogen conversion. Taken after a cycle, they help prevent rebound gyno.


What is Arimistane?

Arimistane is said to be a strong Aromatase Inhibitor (AI) and cortisol inhibitor. It works by decreasing the levels of estrogen circulating in the human body. …Arimistane is considered to be an active Armotase Inhibitor, or AI. It is also an important part of the pro-hormone chain.


Does Arimistane boost testosterone?

Fenugreek can help increase testosterone levels and reduce body fat, making it a potent addition to any arimistane run. Mucuna Pruriens is loaded with the dopamine precursor L-Dopa. … But more importantly, it also enhances libido, testosterone and luteinizing hormone (LH) levels, and reduced cortisol levels.


Does Arimistane lower estrogen?

Luckily, Arimistane is the most potent anti-estrogen on the market. All of these symptoms are associated with high estrogen levels, which happen due to high androgenic ratio of most steroids. When testosterone increases, so does estrogen. The only way to tackle this issue is by taking anti-estrogens like Arimistane.


Arimistane ,

It is used in cycles as well as PCTs. Arimistane truly stands out from the crowd is as the most powerful aromatase inhibitor, which means that it can effectively lower estrogen levels and is in that sense comparable to Nolvadex and Clomid. It also provides a good testosterone boost, used alone will raise testosterone levels in order to build muscle and strength, increase libido, lose fat and more.


Arimistane still needs care when in use and how to use it safely and effectively.


The  difference between legal prohormones like Arimistane and anabolic steroids. Prohormones do not actually add synthetic testosterone to the bloodstream, Arimistane raises the levels of natural testosterone. This action happens when the prohormone activates an enzyme within the liver that is responsible for increasing testosterone production. Raised testosterone in return has the benefit of generating more muscle mass, strength and improving overall physical performance  and when you have a lot of free testosterone circulating in your body, your DHT (Dihydrotestosterone) levels increase as well. DHT is responsible for amplifying the effects of testosterone, and it increases with the elevation of natural testosterone.

So taking Arimistane for its testosterone boosting properties can have many positive and beneficial outcomes. However, anabolic steroids are usually used more for this purpose than prohormones such as Arimistane. Steroids  long-term use can lead to potential side effects like gynecomastia, high blood pressure, water retention, kidney problems and more, especially if high doses are taken. Also, let’s not forget the suppression of natural testosterone. Great gains come at a great price. Luckily, Arimistane is the most potent anti-estrogen on the market. All of these symptoms are associated with high estrogen levels, which happen due to high androgenic ratio of most steroids. When testosterone increases, so does estrogen. The only way to tackle this issue is by taking anti-estrogens like Arimistane. The same applies both while doing a cycle, and especially during PCT (post cycle therapy).

Arimistane also has an excellent effect on cortisol levels. Cortisol is a hormone produced in the adrenal glands, and in an elevated state it can cause stress, lethargy, suppress the immune system, eat away at muscle, and store excess fat. But the worse symptoms happen if cortisol is elevated for a long time. This causes allergies and inflammation in the body, which can destroy one’s digestive tract and respiratory organs. stress is the number one killer, and cortisol is the product and creator of stress.

But not only mental stress is the issue. Cortisol also rises after a heavy workout. This is why natural lifters are always told not to follow training programs of professional bodybuilders who use steroids. It’s because their body is not able to reap the benefits as the cortisol levels rise far sooner than at people who have more testosterone. Well, Arimistane is beneficial because it can in fact inhibit cortisol and keep it within a normal range, which makes it an excellent supplement for athletes looking to increase their workout length and frequency.


Post cycle therapy is necessary after doing most steroid or prohormone cycle. What happens after a few weeks, especially a few months of being on a cycle is that the natural testosterone in the body becomes suppressed. At the same time estrogen levels shoot up because the body is always trying to be in a homeostasis, and with the increase in test while on cycle comes elevated estrogen. This is especially true with steroids such as Dianabol, Anadrol and Depo-Testosterone, which have considerable androgenic properties.

There are a few dangers of having lowered testosterone after a cycle. The most obvious one is muscle loss. The muscle and strength gains that were accomplished during the cycle will evaporate if there is no testosterone to sustain them in the long run. Some other complications involve low libido, mood swings, depression and tiredness. High estrogen levels can add a new complex layer of side effects such as gynecomastia, bloating, mental problems and more. Another reason to do a PCT is to prevent hepatoxicity (liver strain or damage) from occuring while these hormonal imbalances are in place.

So how do we do a PCT? Well, there are a few drugs that can be of use in this instance: Arimistan, Nolvadex and Clomid

We’ll focus on Arimistane at the moment, as it’s actually legal to buy without prescription and it’s also the most powerful anti-estrogen and testosterone booster on the market, as can be seen from this scientific study where three of the most potent aromatase inhibitors were compared. So it’s not strange or overexaggerated when it’s sometimes called by its users a „suicide aromatase inhibitor“ because of its potency. Aromatase is also called estrogen synthase, because it’s the main enzyme necessary to produce estrogen. So an Aromatase Inhibitor deals with the root problem of excess estrogen production by actually suppressing this overworked enzyme.

Some bodybuilders like to combine Arimistane with other PCT drugs such as Nolvadex and Clomid, as they are also able to tackle estrogen and increase natural testosterone production. It really depends on the preference of the individual, but in most cases Arimistane is powerful enough to be used alone regardless of the previous cycle

Arimistane’s , users can enjoy its benefits with little concerns about side effects.  However, if abused or used incorrectly, the individual can experience low estrogen side effects such as joint pain, mood swings, and a drop in libido.

.Those who take arimistane report several benefits from this compound:

Helps Block Estrogen

Provides Cardiovascular Support

Elevate Testosterone Levels

Helps Restore Liver Enzymes

Prostate Support and Protection

Reduces DHT, (which is extremely important for anyone predisposed to hair loss via androgenic alopecia.)

Increases Muscle Hardness

Revitalize Energy Levels and Raise Libido

Increased Strength

Provides Increased LH & Increased Testosterone

Improved recovery

Drying out/hardening and more vascularity

Reduced fat storage

Lowering of cortisol and estrogen levels


It would be equally wise for you to consider reducing your body fat by doing three things:

Increase your Cardiovascular Avtivity

Decrease Your Carbohydrate Intake

Use a Good Fat Burner





Some weightlifters and bodybuilders use Arimistane during their cycle to control the estrogen levels, but it works best when used during Post Cycle Therapy. In both cases it can be used alone or with other supplements.

When taken by itself in order to suppress estrogen, it can be used for up to 6 weeks. The dosages themselves may vary depending on the strength of the product, which again, depends on the brand you’ve purchased from. But usually, 100-200 mg daily is a moderate dose that can provide great results.

When it’s taken with other pct drugs such as Nolvadex or Clomid, or when taken intra-cycle, doses and the way of use are a bit different:


First week: 75-100 mg per day

Second and third week: 50-75 mg per day

Fourth and fifth week: 25-50 mg per day

Arimistane has basically zero side effects when taken in recommended doses for 4-6 weeks. Longer than that is usually not necessary as that is the optimum amount of time in which it can influence the hormonal levels in a positive manner.