Which medication is classified as a Schedule V controlled substance?

Pregabalin is classified as a Schedule V controlled substance due to its potential for abuse and dependence, though it is lower than substances in higher schedules like I-IV. Schedule V medications are generally considered to have a lower risk for addiction compared to those in higher schedules, while still having some potential for misuse, which necessitates regulation.

Pregabalin is commonly prescribed for conditions such as neuropathic pain, fibromyalgia, and seizure disorders, and its use must be carefully monitored as it can lead to a euphoric effect when misused, which contributes to its classification.

The other medications listed, while important in their respective treatments, do not fall under Schedule V. Gabapentin, for instance, is not classified as a controlled substance at all in many places, though it does have some abuse potential. Lamotrigine is primarily used as a mood stabilizer and anticonvulsant with no significant abuse potential, and Horizant, which is a form of gabapentin formulated specifically for certain types of conditions, is also not categorized as a controlled substance in most jurisdictions. This regulatory framework helps ensure that medications with abuse potential are prescribed and dispensed responsibly, prioritizing patient safety.