Trenbolone acetate (Trenacetos) is considered one of the strongest anabolic steroids and is used in bodybuilding to promote muscle building, strength and a "lean" body. However, due to its very high effectiveness, the risks are clear: possible side effects include acne, oily skin, hair loss, increased body hair growth and cardiovascular problems (including increased blood pressure and unfavorable cholesterol levels). In addition, psychological effects such as aggression and mood swings can occur. The suppression of the body's own testosterone production can also lead to testicular atrophy and reduced sperm count, which is why post-treatment (PCT) may be necessary. Not suitable for beginners; in sensitive individuals and with existing cardiovascular/androgenic risks, it should be avoided or only use with extreme caution with medical supervision.