Associate Clinical Professor, St. John's University College of Pharmacy and Health Sciences
314 Answers 8,363 Helpful Votes 25 Followers
To answer your question, I really would need to know more specific information about which medications you are referring to. In general, people with hypothyroidism and high blood pressure are advised to avoid decongestant medications that contain phenylephrine or pseudoephedrine because these medications can raise blood pressure and cause a rapid heartbeat in some patients. Ask your pharmacist which cold medicine would be right for your specific symptoms and with your current medications.
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