@7797, @dancermurphy, @cecp, @grandmacheryl and others have mentioned taking Horizant in other discussions and may have some thoughts to share with you.

Horizant is an anti-seizure medication. Here's what is listed on Mayo Clinic's website for peripheral neuropathy – "Anti-seizure medications. Medications such as gabapentin (Gralise, Neurontin, Horizant) and pregabalin (Lyrica), developed to treat epilepsy, may relieve nerve pain. Side effects can include drowsiness and dizziness." excerpt from Peripheral neuropathy – Diagnosis & Treatment: https://www.mayoclinic.org/diseases-conditions/peripheral-neuropathy/diagnosis-treatment/drc-20352067