I dont know about as needed but I was prescribed to take it for fibromyalgia and restless leg syndrome 4x a day or PRN as needed (meaning if I dont dont have any pain dont take it). That might be what the doctor had meant and the pharmacy might not have specified on the bottle. If you take to much it can make you really drowzy
- Gabapentin Information for Consumers
- Gabapentin Information for Healthcare Professionals (includes dosage details)
- Side Effects of Gabapentin (detailed)
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