What are the possible side effects of Asa/Caffeine/Orphenadrine?
If you experience any of the following serious side effects, stop taking aspirin/caffeine/orphenadrine and seek emergency medical attention or contact your doctor immediately: an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives) an irregular or a very fast heartbeat confusion, hallucinations, or abnormal behavior red, black, or bloody stools; or blood in vomit Other, less serious side effects may be more likely to occur. Continue to take aspirin/caffeine/orphenadrine and talk to your doctor if you experience drowsiness or dizziness headache tremor blurred vision or large pupils difficulty urinating hiccups faint ringing in the ears; or nausea, vomiting, or constipation Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.