Testosterone Undecanoate is the only oral formulation with Methyltestosterone. Most of it is known under the name Andriol. The reason why there are so few effective oral testosterone formulations is that testosterone is immediately absorbed in the intestine and sent immediately to the liver, where it becomes somewhat inactive. In the case of methyltestosterone, alkylation of 17 alpha makes at least part of Testosterone survive the first stage in the liver.
Action of Testosterone Undecanoate
In the case of Testosterone Undecanoat, there is a different mechanism of action. Due to this mechanism of action, Testosterone Undecanoat should be taken several times a day, ideally in three uniformly distributed single doses. It should be noted that Testosterone Undecanoat was taken with a fat-containing meal because Testosterone Undecanoat itself is fat-soluble and fat in food improves lymphatic absorption. This explains why Testosterone Undecanoat is not pressed into normal tablets, but dispersed in oil is contained in a gelatin capsule.
Extremely positive in the use of Testosterone is that it does not toxinize either the liver or the kidneys and during long periods of use has not proven to be harmful to health. Orally administered Testosterone Undecanoat is also combined with liver and kidney nontoxic, an oil-soluble testosterone ester. It all sounds very beautiful and inviting, especially since it is not possible to inject here. However, what is unfortunate is the fact that the lymphatic system is not a very effective organ when it comes to taking steroid substances.
Doses of Testosterone Undecanoate
Therefore, it is not surprising that in the case of Testosterone Undecanoat, high daily doses are necessary to achieve any muscle and strength building action. For most athletes, a daily dose of about 400 mg (= 10 capsules) is required to feel the effect. At a black market price of around EUR 0.75-1.00 a capsule is an extremely expensive matter. In principle, you can now give a negative assessment of the usefulness of Testosterone Undecanoat for bodybuilding purposes.
An additional difficulty is the fact that Testosterone Undecanoat must be well cooled and stored at 2-8 degrees Celsius, otherwise the substance will be rendered useless within a few months. For this reason, it should be recognized that many preparations available on the black market do not have their full effect, because it can not be guaranteed that they were properly stored.
Courses of Andriol
Particular caution is recommended for preparations originating in southern countries. Testosterone Undecanoat, due to its short half-life, is usually consumed every day in equal high doses. Taking should take place with meals, because fats contained in food cause better intake of substances. However, the use of testosterone undecanoat for any bodybuilder should be discouraged, as the possible effects are very modest and the product is not worth the money spent on him.
For beginners, Testosterone Enantat or alternatively Testosterone Propionate is better for beginners. Whoever claims to know better, should take 240 mg as an absolute minimum daily. A normal cycle of 12-week weight gain with a daily dose of 240 mg would cost about 400-500 Euro. In comparison with this, 12 ampoules of 250 mg Testosterone Enantat costs about 100 Euro. 
Advanced bodybuilders who already have experience with injecting testosterone esters will not feel anything when using Testosterone Undecanoat. Professionals use testosterone with a prolonged effect, such as Enantat or Cipionat, in the mass growth phase instead, while Testosterone Propionate is often preferred in pre-contest preparation. Women should also avoid Testosterone Undecanoat. Injectable short-term testosterone ester like Propionate is not only easier to control than Testosterone Undecanoat, but such results are more predictable. Women who would like to try Testosterone Undecanoat despite using it would use 80-120 mg per day.
The duration of the treatment should not, however, exceed 4-6 weeks. Like all testosterone preparations, Testosterone Undecanoat suppresses its own testosterone production. However, due to the poor absorption of this steroid, the attenuation is not as strong as with other injectable testosterone esters. Due to the relatively short period of expulsion of this substance, the counteracting treatment should be started immediately on the day of the last use. The combined use of Tamoxifen and Clomifen are completely sufficient to quickly return to the regular production of their own testosterone production.
However, due to the poor absorption of this steroid, the attenuation is not as strong as with other injectable testosterone esters. Due to the relatively short period of expulsion of this substance, the counteracting treatment should be started immediately on the day of the last use. The combined use of Tamoxifen and Clomifen are completely sufficient to quickly return to the regular production of their own testosterone production.
Administration of HCG is unnecessary because Testosterone Undecanoat does not transmit large amounts of testosterone to cause testicular atrophy. The most common is „Andriol“ and is produced by the company „Organon“. All preparations Undecanoat Testosteronu are offered in the form of capsules and contain 40 mg of the active substance in the capsule. The costs range from EUR 0.75 to 1.00 per capsule. Availability is small due to low demand, firstly because of the high price and secondly because of poor performance. Also „Andriol“ is falsified, but not so much more known and widespread Testosterone Enantat and testosterone mixes.
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