This oral form of testosterone is not hepatotoxic. In fact it is not 17-alpha-alkylated, which means you do not need to take liver protection while using it.
It is most commonly used in hormone substitution or testosterone replacement treatment, and rarely used in bodybuilding.
Its half-life is very short and requires a higher dosage to get results (up to 16 tablets per day!!!)
This product aromatizes at intake above 200mg per day, and can thus cause significant water retention as well as the risk of gynecomastia.
Protections like Nolvadex, Arimidex and even Proviron are necessary.
Its benefits include better vascularization, higher energy level, better recovery, and mass and strength gains.
Methyltestosterone is 17-alpha-alkylated. Therefore it is toxic to your liver and requires you to take a product like Samarin140 or Legalon.
Methyltestosterone’s positive and negative effects are the same as those for all other forms of testosterone.
Due to its short half-life, this product is often used by athletes before a competition to increase their levels of strength and aggression.