
Dosage is difficult to determine due to the lack of standardization and variability in available forms. Typical dosages of the crude herb vary from 2-10 grams per day. Valerian root is non-toxic but may cause side effects in excessive doses.
Valerian is only suppose to be used short term and never for children under
aged 16!
Few adverse events attributable to valerian have been reported.[6] Large doses (500+mg) or chronic use may result in stomach ache, apathy, and a feeling of mental dullness or mild depression. Because of the herb's tranquilizer properties, it may cause dizziness or drowsiness, effects that should be considered before driving or operating heavy or hazardous equipment. In some individuals, valerian can cause stomach ache, anxiety, and night terrors (see above). Products containing valerian extracts may also cause an individual to test positive for benzodiazepines in most standard drug screens. Though some people like the earthy scent, many others find it unpleasant. Overall, Valerian generally comes with very mild side effects and is considered a safe dietary supplement. In rare cases, Valerian may cause an allergic reaction, typically as a skin rash, hives, or difficulty breathing. Check with your doctor before taking hawthorn if you are taking any medication for blood pressure.