Anti-epileptic drug with structural properties similar to Gabapentin. Also used in the treatment of anxiety disorders, neuropathic pain and fibromyalgia. It is excreted into breast milk in small quantities as plasma levels in infants were less than 10% of maternal ones when compared to those of treated mothers. No side effects were observed in those infants. Because less experience has been published than with other drugs of the same group, alternatives that are known as safer should be considered of choice during the neonatal period or in case of preterm babies.