A client with diabetic peripheral neuropathy has been taking pregabalin for 4 days. Which finding indicates to the nurse that the medication is effective?

A. Improved visual acuity. Pregabalin does not affect visual acuity. This medication is primarily used to manage neuropathic pain. B. Granulating tissue in foot ulcer. While important, this is not directly related to the effectiveness of pregabalin, which is prescribed for neuropathic pain, not wound healing. C. Full volume of pedal pulses. This reflects peripheral circulation but is not an indicator of the effectiveness of pregabalin for neuropathic pain. D. Reduced level of pain. This is the correct answer because pregabalin is used to treat neuropathic pain associated with diabetic peripheral neuropathy, and a reduction in pain indicates the medication is effective.