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Diphenhydramine (/ˌdaɪfɛnˈhaɪdrəmiːn/; abbreviated DPH, sometimes DHM) is a first-generation antihistamine possessing anticholinergic, antitussive, antiemetic, and sedative properties that is mainly used to treat allergies. It is also used in the management of drug-induced parkinsonism and other extrapyramidal symptoms. The drug has a strong hypnotic effect and is FDA-approved as a nonprescription sleep aid, especially in the form of diphenhydramine citrate. It is produced and marketed under the trade name Benadryl by McNeil Consumer Healthcare in the U.S., Canada, and South Africa (trade names in other countries include Dimedrol, Daedalon, and Nytol). It is also available as a generic or store brand medication.

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* Extracted from FDA Adverse Event Reports for all drugs with the same active ingredients.

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Druginformer Identified Side Effects: None

Posted By jess04 in drugs.com on August 1, 2004 @ 12:00 am

Thank you so much for filling me in on this. My mother had actually taken him to that ER while I was out of town. She said that the nurse knew he had asthma and that it was still given to him. I think...

Druginformer Identified Side Effects: None

Posted By jennifermw in drugs.com on August 1, 2004 @ 12:00 am

okay from what I am reading this drug should not be used with patients with asthma. The side effects of this drug could danger someone with asthma. I'm not trying to scare you, but all the info i'm g...

Druginformer Identified Side Effects: None

Posted By jess04 in drugs.com on July 31, 2004 @ 12:00 am

diphen My four year old was prescribed diphen af in an ER recently and I just read that the doctor needed to be notified if one had asthma. Why is that? He has asthma and I don't know that I wa...

Druginformer Identified Side Effects: None

Posted By Anonymous in prescriptiondrug-info.com

Diphen/ Trop Tab 2.5mg

* Warning: The facts and figures contained in these reports are accurate to the best of our capability; however, our metrics are only meant to augment your medical knowledge, and should never be used as the sole basis for selecting a new medication. As with any medical decision, be sure to work with your doctor to ensure the best choices are made for your condition.

* About FAERS: The FDA Adverse Event Reporting System (FAERS) is used by FDA for activities such as looking for new safety concerns that might be related to a marketed product, evaluating a manufacturer's compliance to reporting regulations and responding to outside requests for information. Reporting of adverse events is a voluntary process, and not every report is sent to FDA and entered into FAERS. The FAERS database may contain duplicate reports, the report quality is variable, and many factors may influence reporting (e.g., media attention, length of time a drug is marketed, market share). For these reasons, FAERS case reports cannot be used to calculate incidence or estimates of risk for a particular product or compare risks between products.