What are the possible side effects of Theraflu Nighttime Severe Cold (Apap/Pheniramine/Phenylephrine)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using this medication and call your doctor at once if you have any of these serious side effects: severe sore throat that lasts longer than 2 days or occurs with fever, nausea, or vomiting fever lasting longer than 3 days; or redness or swelling, or any new symptoms Continue using this medication and talk with your doctor if you have any of these less serious side effects: drowsiness; or feeling restless or excited Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
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