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Dytan-CS Side Effects

Generic name: carbetapentane / diphenhydramine / phenylephrine

Note: This document contains side effect information about carbetapentane / diphenhydramine / phenylephrine. Some dosage forms listed on this page may not apply to the brand name Dytan-CS.

Applies to carbetapentane/diphenhydramine/phenylephrine: oral suspension extended release, oral tablet chewable extended release, oral tablet extended release.


Cardiovascular side effects have included hypotension, palpitations, tachycardia, and extrasystoles.[Ref]


Hematologic side effects have included hemolytic anemia, thrombocytopenia, and agranulocytosis.[Ref]

Nervous system

Nervous system side effects have included sedation, sleepiness, dizziness, disturbed coordination, fatigue, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, euphoria, paresthesias, vertigo, tinnitus, acute labyrinthitis, headache, neuritis, and convulsions,[Ref]


Ocular side effects have included diplopia and blurred vision.[Ref]


Gastrointestinal side effects have included epigastric distress, anorexia, nausea, vomiting, diarrhea, and constipation.[Ref]


Genitourinary side effects have included urinary frequency, difficult urination, urinary retention, and early menses.[Ref]


Respiratory side effects have included thickening of bronchial secretions, tightness of chest or throat, wheezing, and nasal stuffiness.[Ref]


General side effects have included excessive perspiration, chills, and dryness of mouth, nose and throat.[Ref]


Hypersensitivity side effects have included urticaria, drug rash, anaphylactic shock, and photosensitivity.[Ref]


1. "Product Information. Dytan CS (carbetapentane / diphenhydramine / phenylephrine)." Hawthorn Pharmaceuticals (2003):

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.