Hi, Thanks for posting in HCM. I understand your concern. Lyrica contains pregabalin , which is an anti-epileptic (anticonvulsant) drug. It works by slowing down impulses in the brain that cause seizures. It is used to control seizures and to treat fibromyalgia. Common side effects with use of Lyrica include: infection, ataxia, blurred vision, constipation, diplopia, dizziness, drowsiness, fatigue, headache, peripheral edema, tremor, weight gain, visual field loss, accidental injury and dryness of mouth (xerostomia). Other side effects that can occur include: abnormal gait, abnormality in thinking, amnesia, arthralgia, asthenia, cognitive dysfunction, confusion, edema, neuropathy, sinusitis, speech disturbance, vertigo, visual disturbance, myasthenia, amblyopia, increased appetite and twitching. However, it is not that everyone taking this medication would experience all the above side effects mentioned. If you experience any of the mentioned side effects and continues to be bothersome, you need to seek medical attention promptly. Intake of Lyrica is not known to cause sexual dysfunction. Hope the information provided would be helpful. Best wishes. Regards, Dr.Ashakiran.S., MBBS., MD.