Ethel 40

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Wanting to find out what Phenavent D 40-120 Tab Ethex is for and the side effects. Thank You. ## Hello, Ethel! How are you? The FDA lists Phenavent D as containing Guaifenesin and Phenylephrine, it is a decongestant and expectorant that is most commonly used to treat cold symptoms. Its typical side effects may possibly include nausea, dizziness, headache, dry mouth and nervousness. Is there anything else I can help with?

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