Hello, Thanks for your query. Diarrhea, nausea, vomiting, dizziness, trouble sleeping, decreased interest in sex, or changes in sexual ability may occur. If any of these effects persist or worsen. serious side effects, including: numbness/tingling, tremor, restlessness, inability to keep still, difficulty concentrating, confusion, memory problems, weakness, unsteadiness, pounding heartbeat. I do hope that you have found something helpful and I will be glad to answer any further query. Take care