What are the possible side effects of Hydrocodone CP (Chlorpheniramine/Hydrocodone/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 a serious side effect such as: severe dizziness, anxiety, restless feeling, or nervousness fast, pounding, or uneven heartbeats shallow breathing, slow heartbeat confusion, hallucinations, unusual thoughts or behavior feeling like you might pass out urinating less than usual or not at all easy bruising or bleeding, unusual weakness, fever, chills, body aches, flu symptoms increased blood pressure (severe headache, blurred vision, trouble concentrating, chest pain, numbness, seizure); or nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes) Less serious side effects may include: nausea, vomiting, upset stomach, constipation dry mouth blurred vision dizziness, drowsiness problems with memory or
