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Here you can see a Metribolon manufactured by Newgenpharm from Korea.
Methyltrienolone may be listed as 17b-hydroxy-17a-methyl-estra-4,9,11-triene-3-one or 17a-methyl-trenbolone, and has been sold under the name Metribolone. Methyltrienolone is an oral steroid that has never been sold as a prescription drug or a dietary supplement. Its only use at this point has been as a research chemical, although it does have some limited availability on the black market. Methyltrienolone is basically trenbolone with a C-17 methyl group making it orally bioavailable.Although they are very similar in structure, methyltrienolone is very different in effect from trenbolone. It has an anabolic to androgenic ratio of 12000/6000 in comparison to methyl-testosterone, making it possibly the most potent steroid in existence. Methyltrienolone may also be the strongest androgen receptor binder of all steroids. Methyltrienolone required very small doses to see big gains in size and strength. Methyltrienolone does not convert to estrogen, but it does have progestational activity which may increase the effects of estrogen. This can be considered a “dry” compound that will not cause much if anything for subcutaneous (under the skin) water retention.Along with the incredible potency of methyltrienolone comes some very strong side effects. Methyltrienolone is very androgenic and is likely to cause hair loss and severe acne in those who are prone to these effects. There is some risk for gynecomastia due to the progestational effects of methyltrienolone. The biggest concern with Methyltrienolone is probably its liver toxicity. Even at very low doses, methyltrienolone can cause significant liver stress in a very short period of time. This may possibly be the most liver toxic steroid in existence, and it is definitely not recommended to use methyltrienolone for any longer than 4 weeks at a time.Methyltrienolone has some availability on the black market, but it is not very popular due to its androgenic side effects and high liver toxicity. The risks certainly seem to outweigh the benefits with this steroid.