Winstrol

What is Winstrol

Winstrol is the trade name for stanozolol — a synthetic anabolic-androgenic steroid derived from dihydrotestosterone (DHT).

It belongs to the group of 17α-alkylated steroids and was initially designed for veterinary use, later adapted for human applications.

The injectable version in 50 mg ampoules represents an aqueous suspension standardized for intramuscular administration.

Compared to vial-based preparations, ampoules ensure sterility and precise dosing, reducing the risk of contamination.

This form is widely used during cutting phases due to its ability to maintain lean muscle mass while promoting a dry, defined appearance.

Main effects of Winstrol

💪 Improves muscle tone and definition

⚡ Increases strength, endurance, and physical performance

🔥 Promotes fat utilization and enhances metabolic rate

🩸 Lowers SHBG (sex hormone-binding globulin), raising free testosterone levels

🧬 Stimulates collagen synthesis and tissue recovery

💦 Reduces water retention, enhancing vascularity and muscle relief

How to take Winstrol

Administration

• Route: intramuscular injection
• Frequency: once daily or every other day, depending on the cycle structure
• Each ampoule contains a single sterile 50 mg dose
• The substance should be shaken before injection to evenly distribute microcrystals

Dosage

Typical cycles last 4–6 weeks.

Average dosage for male athletes ranges from 30 to 50 mg per day, depending on the training phase.

For experienced users, the dose may reach 50 mg daily, while beginners often start at 20–30 mg.

Women use significantly lower doses — 2.5–5 mg daily — to avoid virilization symptoms.

Precautions

• Do not exceed the recommended duration or frequency of use
• Monitor lipid profile and liver function due to possible hepatotoxicity
• Combine with testosterone esters or nandrolone to reduce joint strain and maintain hormonal balance
• Avoid stacking with multiple oral 17α-alkylated compounds

Possible side effects

• Joint pain or ligament stress due to dry connective tissues
• Elevated blood pressure or altered lipid profile
• Liver strain (lower with injectable form than with oral)
• Acne or hair loss in androgen-sensitive individuals
• Temporary suppression of endogenous testosterone
• Myocardial hypertrophy with prolonged high-dose use

Contraindications

• Pregnancy or breastfeeding
• Active prostate or breast carcinoma
• Hypersensitivity to stanozolol or formulation components
• Severe hepatic, renal, or cardiovascular disease

How to store

• Store at room temperature (15–25 °C), in a dry place away from light
• Keep ampoules sealed until use
• Do not freeze or expose to direct sunlight

How does Winstrol work

Winstrol exerts its effects through direct activation of androgen receptors in muscle tissue and fat cells.

This interaction enhances protein synthesis, promotes nitrogen retention, and stimulates collagen production, leading to muscle hardness and improved recovery.

Mechanism of action

• Androgen receptor activation: Initiates gene transcription for protein synthesis and muscle repair.
• Reduction of SHBG: Increases free circulating testosterone, amplifying the effect of other androgens used concurrently.
• Enhanced collagen formation: Accelerates tissue regeneration and post-training recovery, though excessive doses may reduce ligament flexibility.
• Fat metabolism: Increases utilization of fatty acids for energy, aiding in fat loss without fluid retention.
• Anti-estrogenic and anti-progestogenic action: Prevents estrogen-related side effects such as gynecomastia and water retention.

Pharmacological profile

Winstrol has a half-life of approximately 24 hours and an active duration of 36–72 hours, which supports daily or alternate-day injection protocols.

The injectable form ensures minimal hepatic strain compared to oral administration and produces a clean, dry anabolic effect, ideal for preparation phases before competition.