How Much Arimidex or Letrozole is needed on a Testosterone Cycle?

One of the main elements of the testosterone cycle is management of estrogen levels. This is where anti-estrogens come into play. They are quite popular nowadays with some of the most popular ones being Arimidex and Letrozole. Just as the name suggests, their work is to limit the levels of estrogen present during the testosterone cycle. The main issue is to what levels should one use theses anti-estrogens?

images (4)Letrozole

This is an aromatase inhibitor of the third generation. It is either used by women requiring postmenopausal treatment or by bodybuilders; which is the case here. It is mainly used to lower the excess levels of estrogen during the cycles. The excess levels of estrogen come about as a result of using steroids. It is otherwise referred to as a type 2 inhibitor.

загруженное (1)Arimidex

Just like with Letrozole, Arimidex is another aromatase inhibitor. It is commonly used in two scenarios; one is where the use of steroids tends to cause gynecomastia. Secondly is when the moderate use of steroids tens to stimulate the body in producing excess amounts of aromatase. Its main job is to inhibit this production and either reduce or completely remove the excess amounts of aromatase in the body.

What quantities of either should one use?

According to experts, the amounts of the two that the body can accommodate should be decided upon by blood tests. Initially, it would be advisable for one to start with 2.5 mg on a weekly basis. This means the 2.5 milligrams will be divided equally among the 7 days of the week. At the end of the day, it would mean about 0.36 mg on a daily basis. With this dose, there will be no need for taking any form of testosterone.

However, this will mean high levels of estradiol should be reduced. On the other hand, if testosterone is still in the picture, then the 0.36 mg should be taken on a weekly basis for every 250 mg dose of testosterone taken. Generally, the dosage of Letrozole taken should in no way exceed 1.0 mg on a daily basis.

Daily dosages can be rather confusing in some cases. Therefore, it would be wise for one to concentrate more on weekly doses rather than the daily ones. In the case of Arimidex, it does not have a conclusive dosage that should be taken together with doses of testosterone. The stated does generally rotates around primarily concentrating on Arimidex. This is taking 0.5 mg on a daily basis. It therefore translates into 3.5 mgs on a weekly basis as the initial dosage before one fully develops into using the anti-estrogen.


With Letrozole, the initial dosage should have stick to the one stated above, at most 1 mg daily. There are those who take up to 700 mg per week. If analyzed property, this is more of an overdose considering the fact that it is more like 4 times the stated 250-200mg weekly dose. Start of using the o.36mg or 1.0 mg dose. However, make sure to keep track of your estradiol blood levels regularly in order to be sure of the effect.

This is very good idea and especially if you tend to experience certain symptoms such as depression, low libido and joint problems. These are symptoms of low estradiol and it is important to maintain the levels. If at all you do not experience these symptoms, it is still important to have a blood test. There might not be the symptoms but it still a suggestive symptom. At the end of the day, the changes in symptoms are the ones to dictate whether or not the amounts in your aromatase inhibitors should change or not.


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