Potential side effects of Coricidin Cough and Cold include dry mouth, nausea, constipation, stomach discomfort and problems concentrating, according to Drugs.com. Blurred vision, dizziness, drowsiness and ringing in the ears may also occur. Children are especially likely to experience restlessness or excitability after taking Coricidin Cough and Cold.
Serious side effects, such as a fast, pounding heartbeat; slow or shallow breathing; and severe dizziness, anxiety or nervousness, sometimes occur while taking Coricidin Cough and Cold, according to Drugs.com. Confusion, hallucinations, unusual behavior and decreased urination are other serious side effects. In addition, patients are advised to be aware of side effects such as easy bleeding or bruising, fever, unusual weakness and flu-like symptoms. Immediate medical care is necessary if any serious side effects occur.
Coricidin Cough and Cold combines the medications chlorpheniramine and dextromethorphan, states Drugs.com. Chlorpheniramine is an antihistamine medication that relieves sneezing; runny nose; itchy or watery eyes; and other allergy symptoms. Dextromethorphan suppresses coughs caused by allergies, colds or the flu. It is not effective for coughing related to smoking, asthma or emphysema. Consultation with a doctor is recommended prior to taking Coricidin Cold and Cough for patients with glaucoma; kidney, liver or heart disease; thyroid problems; or problems urinating.