I'm basing my suggestion on the fact that your current doctor knows you have this medication that was prescribed by a different physician. I would call you pharmacist, the one who prescribed the flexeril, and ask them this question. And/or call the prescribing doctor and ask.
I had this medication a very long time ago and I do remember getting very drowsy from it and would never consider driving while taking it. BUT...I currently take both Oxycodone ER and and regular oxycodone. I hate them both but it's the only medication that helps bring my pain level down to a point where I can function. Since I have been taking them daily for several years I can drive and function almost normally. But if I begin to feel overly tired or sleepy I do NOT drive. Since you have not been taking flexeril on a regular basis I would not even consider driving while taking it. Also no alcohol, cold or allergy medicine, narcotic pain medicine, sleeping pills, and medicine for seizures, depression or anxiety. These can add to sleepiness caused by Flexeril.
Please be very careful with any medication in this category and keep us posted on how you are doing. We are always here to help you in any way we can.
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(\o/)Co-Moderator Fibromyalgia & Chronic Pain Forums