What are the possible side effects of Tusso-XR (Dextromethorphan/Guaifenesin/Phenylephrine)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using this medication and call your doctor at once if you have any of these serious side effects: severe dizziness, anxiety, restless feeling, or nervousness confusion, hallucinations; or slow, shallow breathing Less serious side effects may include: dizziness or headache, a rash, or nausea, vomiting, or stomach upset This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.