The best thing to do when you have high blood pressure and need anything for cold symptoms is ask your pharmacist. They are the ones who can recommend exactly what you need. Dextromethorphan itself won't, but steer clear of cold preps with phenylephrine in them.
- Dextromethorphan Information for Consumers
- Dextromethorphan Information for Healthcare Professionals (includes dosage details)
- Side Effects of Dextromethorphan (detailed)
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