What side effects may I notice from receiving Chlorpheniramine?

Side effects that you should report to your doctor or health care professional as soon as possible:
-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-breathing problems
-changes in vision
-confused, agitated, nervous
-fast, irregular heartbeat
-feeling faint, dizzy
-seizures
-tremor
-trouble passing urine or change in the amount of urine
-unusual sweating
-unusually weak or tired

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
-constipation or diarrhea
-drowsy
-dry mouth, nose, throat
-headache
-loss of appetite
-stomach upset, vomiting
-trouble sleeping

This list may not describe all possible side effects for Chlorpheniramine. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.