Are there any side effects?

Some users may experience side effects, especially if they exceed our recommended dose of 20 mg of mitragynine per serving or use it for extended periods. Potential side effects may include nausea, dizziness, and mild gastrointestinal discomfort. For this reason, we recommend using VIVAZEN® for no more than four consecutive weeks, allowing your body regular breaks. Please be sure to consult the warning label on specific VIVAZEN® products prior to use.