Side Effects and Cautions

• Studies suggest that valerian is generally safe to use for short periods of time (for example, 4 to 6 weeks).
• No information is available about the long-term safety of valerian.
• Valerian can cause mild side effects, such as headaches, dizziness, upset stomach, and tiredness the morning after its use.
• Tell your health care providers about any herb or dietary supplement you are using, including valerian. This helps to ensure safe and coordinated care.