Some of the possible valerian side effects include headaches, morning drowsiness, and vivid dreams. The herbal supplement has also been reported to cause insomnia, excitability, and uneasiness when it was used for several months. You should seek immediate medical attention if you develop more serious side effects of valerian, such as signs of liver damage or allergic reactions.
Does Valerian Cause Side Effects?
As with any medication or supplement, side effects are possible with
valerian. Like most drugs or supplements used to treat
insomnia, valerian is more likely to have bothersome side effects if you take it at the wrong time of the day (usually, it should be taken at night).
Possible Valerian Side Effects
Possible bothersome (although not usually serious) valerian side effects may include:
- Headaches
- Vivid dreams
- Upset stomach
- Dry mouth
- Morning drowsiness.
Surprisingly, valerian can also cause some unexpected side effects. Although the herb is often claimed to be useful for treating insomnia and
anxiety, it can sometimes cause insomnia, excitability, and uneasiness, especially if it is used for several months.
Valerian Side Effects to Report
Some side effects with valerian, while occurring infrequently, are potentially serious and should be reported immediately to your healthcare provider. These include but are not limited to:
- Signs of liver damage, such as:
- Yellowing of the whites of the eyes or skin (jaundice)
- Upper-right abdominal pain (stomach pain)
- Elevated liver enzymes (found using a blood test)
- Any unusual side effects after suddenly stopping valerian (cases of valerian withdrawal have been reported)
- Signs of an allergic reaction, such as:
- A rash
- Hives
- Itching
- Swelling of the mouth or throat
- Wheezing
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