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A member asked:
I am currently taking phentermine and have a bad cold. i stopped the phentermine one day ago. when can i safely take cold medicine?
3 doctors weighed in across 2 answers
Since phentermine can stay in your system up to 4 days, I would avoid taking cold medications that contain vasoconstricor agents like sudafed or phenylephrine. I think you could use a nose spray sparingly. Ask your pharmacist to recommend a medication that doesn't contain those 2 ingredients.
Answered 11/4/2021
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Answered 11/6/2021
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