Summary. Skin rash is found among people who take Xanax, especially for people who are female, 60+ old , have been taking the drug for 1 month, also take medication Lasix, and have Pain. I got rash after taking expired tylenol Rash after taking expired tylenol All the information, content and live chat provided on the site is intended to be for informational purposes only, and not a substitute for professional or medical advice. How to use Xanax. Read the Medication Guide provided by your pharmacist before you start taking alprazolam and each time you get a refill. If you have any questions, ask your doctor or pharmacist. Can Xanax cause Rash? Rash is a known side effect of Xanax. Complete analysis from patient reviews and trusted online health resources, including first-hand experiences. Rash is a known side effect of Xanax. Some of the dosage forms listed on this page may not apply to the brand name Xanax. In Summary Common side effects of Xanax include: ataxia, cognitive dysfunction, constipation, difficulty in micturition, drowsiness, dysarthria, fatigue, memory impairment, skin rash, weight gain, weight loss, anxiety, blurred vision, diarrhea, insomnia, decreased libido, increased appetite, and decreased appetite. Side Effects. Drug information provided by: IBM Micromedex. Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. For the Consumer. Applies to alprazolam: oral solution, oral tablet, oral tablet disintegrating, oral tablet extended release. Along with its needed effects, alprazolam may cause some unwanted effects. Find information about common, infrequent and rare side effects of Xanax Oral. Do not take Xanax if you have acute narrow-angle glaucoma. Do not take Xanax if you’re taking the antifungal drugs Sporanox (itraconazole) or Nizoral (ketoconazole). Possible side effects of Xanax include headaches, nausea, dizziness, blurred vision, and impaired memory. Side effects are often observed at the beginning of therapy and usually disappear upon.