No: No such a good idea to take a drug in the phenothiazine family after head injury as it lowers seizure threshold. Wait a couple if months.
Answered 9/30/2018
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With caution: Promethazine can be helpful for the dizziness, nausea and head pain resulting from a concussion. Since it is potentially very sedating it should be used with caution when using machinery, driving and making important decisions until you are sure it is tolerated.
Answered 5/17/2015
2.8k views
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