Flexeril (cyclobenzaprine hcl) side effect: Auditory hallucinations with Flexeril (cyclobenzaprine hcl) not typical. Most common are drowsiness, dry mouth, fatigue, and headache. "psychosis" - at least a symptom of which you are asking about - hs been reported in less than 1% of users. Note that both alcohol and ultram (frequently prescribed with Flexeril (cyclobenzaprine hcl) for pain associated with muscle spasms), can worsen or heighten the side effects.
Answered 6/25/2014
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