How Safe Is Winstrol?

Updated February 21, 2017

Winstrol is a type of anabolic steroid, a prescription medication originally intended to strengthen muscle weakness due to illness or disease. The abuse of Winstrol and other steroids led to the passage of the Anabolic Steroids Act of 1990, which made anabolic steroids a controlled substance and eventually led to the discontinuation of Winstrol sales in the United States.

Side Effects

The most common side effects of Winstrol are not normally dangerous and include acne, fluid retention, insomnia, headaches, loss of libido or sexual ability, headaches and swelling of the ankles and feet. Men often develop a feminine swelling of breast tissue related to steroid use, and women may notice a decrease in breast size.

Time Frame

More serious risks associated with Winstrol are most common with long-term use that lasts for a period of several months or even years, according to

Drug Interaction

When combined with blood-thinning medications like Warfarin, Winstrol increases your risk of developing sudden or uncontrollable bleeding.


Some patients develop peliosis hepatis or the appearance of blood-filled cysts on the liver from taking Winstrol, which have the potential to cause liver damage or death of the organ and can prove to be fatal. Some men develop congestive heart failure or suffer permanent heart damage as a result of using Winstrol.


Winstrol poses a risk for birth defects or miscarriages and is not safe for use during pregnancy. If you have a history of breast cancer, diabetes, prostate enlargement or cancer, elevated blood calcium levels or disease that affects your heart, blood vessels, kidneys or liver, it may not be safe for you to take Winstrol due to its potential side effects.

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About the Author

Faith Davies has been writing professionally since 1996, contributing to various websites. She holds an LAH insurance license in the state of Pennsylvania and has experience as a bank branch manager and lending officer. Davies graduated cum laude from the University of Pittsburgh with a Bachelor of Arts in art history.