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Seems the link is vague at best and misleading at worst... Almost every life long steroid user that i've spoken with or have known were users of many things like, alcohol, pain killers, rec drugs and depression type drugs.
What drugs are harmful to your kidneys?
Pain Medications
Your kidneys could be damaged if you take large amounts of over-the-counter medications, such as aspirin, acetaminophen and ibuprofen (LINK to analgesics). None of these medicines should be taken daily or regularly without first talking to your doctor. Thousands of Americans have destroyed their kidneys by using excessive amounts of these medications.
Alcohol
Heavy drinking can hurt both your kidneys and your liver. Alcoholics have a high risk of developing both kidney and liver failure.
Antibiotics
Antibiotics can also be dangerous if they are not taken correctly. People with kidney disease need to take a smaller amount of antibiotics than people with healthy kidneys. Take only medicines ordered for you by your doctor.
Illegal Drugs
Most street drugs, including heroin, cocaine and ecstasy can cause high blood pressure, stroke, heart failure and even death, in some cases from only one use. Cocaine, heroin and amphetamines also can cause kidney damage