How does promethazine treat cold and allergy symptoms?

Promethazine is prescribed to control symptoms of allergies and colds, such as runny nose, watery eyes, coughing, sneezing, and itching. It blocks histamine receptors and thus prevents the effects of histamines in the body. Promethazine can also control a severe allergic reaction, called an anaphylactic allergic reaction. Promethazine does not cure colds or allergies, nor does it speed up the recovery from these conditions. It does however, control symptoms arising from these conditions.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.