Knowledge Content
**1. Rapid manifestation of positive physiological effects**
3-5 days after taking it, users often feel an increase in strength threshold, which is due to the drug's promotion of acetylcholine release at the neuromuscular junction. In 1-2 weeks, muscle protein synthesis efficiency is increased by 30%-50% (activated by the mTOR pathway), and lean body mass can be observed with resistance training. Its unique "dehydration" effect appears in 5-7 days, and it reduces sodium ion reabsorption by inhibiting aldosterone receptors, thereby improving muscle line clarity. In medical treatment (2-6mg/day), a decrease in the frequency of hereditary angioedema attacks can be observed within 4 weeks because the drug promotes the synthesis of C1 esterase inhibitors in the liver.
**2. Progressive development of potential side effects**
The 17α-alkylated structure may cause liver toxicity after 2 weeks of medication, which is manifested as increased ALT/AST enzyme activity. After long-term use (more than 6 weeks), about 80% of men experience endogenous testosterone suppression, serum testosterone levels decrease by 40%-60%, and luteinizing hormone (LH) secretion decreases. About 30% of female users experience masculinization symptoms such as deep voice and hirsutism, which are related to peripheral androgen receptor activation. Lipid metabolism disorders are obvious after 4 weeks of medication, with LDL cholesterol increasing by 15%-20% and HDL cholesterol decreasing by 20%-25%.
**3. Body adjustment process after discontinuation of medication**
After discontinuing Winstrol, liver enzyme indicators usually return to normal in 2-4 weeks, but the hormone suppression state may last for 8-12 weeks, and post-cycle therapy (PCT) is required to accelerate the recovery of endogenous testosterone. Muscle mass may decrease by 5%-10% due to the decline in protein synthesis in the early stage of discontinuation, but reasonable nutritional support can alleviate the loss. It is worth noting that high-dose abusers (more than 100 mg/day) may be at risk of irreversible liver fibrosis and the usage cycle and dosage need to be strictly controlled.
