Dear N.C.: Hair loss is not listed on the literature for this medication, but yes, the drug can indirectly cause hair loss by wiping out the body’s natural nutrients. Cholestyramine does a good job of grabbing extra cholesterol in the body, but it also grabs a few vitamins and minerals at the same time.Click to see full answer. Then, what are side effects of cholestyramine? Common side effects of Questran (cholestyramine) include: constipation, diarrhea, stomach/abdominal pain, gas, bloating, nausea, vomiting, loss of appetite, Also, how long does it take for cholestyramine to take effect? In some conditions cholestyramine may take up to one month to work. Also know, what medications can cause hair loss? Here are 11 drugs that have been known to cause excessive hair loss as a side effect. 1) Cholesterol-lowering medications — atorvastatin and simvastatin. 2) Anticoagulant — warfarin. 3) Blood pressure medications — captopril and lisinopril. 4) Psoriasis treatment — acitretin. 5) Anti-arrhythmia drug — amiodarone. How can I stop my hair from falling out due to medication? Treatment Minoxidil (Rogaine). This is an over-the-counter (nonprescription) medication approved for men and women. It comes as a liquid or foam that you rub into your scalp daily. Finasteride (Propecia). This is a prescription drug approved for men. Other medications. For men, the oral medication dutasteride is an option.