Cramp Bark
Viburnum opulus
A muscle-relaxing bark used for menstrual cramps, muscle spasms, and tension.
Traditional use (indigenous-americas, european-folk): A muscle-relaxing bark used for menstrual cramps, muscle spasms, and tension.
A muscle-relaxing bark used for menstrual cramps, muscle spasms, and tension.
Active constituents are under study; evidence ranges from traditional use to preliminary human trials.
- A muscle-relaxing bark used for menstrual cramps, muscle spasms, and tension.
Evidence strength: traditional use.
- See the evidence level above
- Contains salicylates; caution with aspirin allergy.
- Pregnant/breastfeeding people without medical advice
Contains salicylates; caution with aspirin allergy.
May interact with prescription medications — review with a clinician if you take any.
Use caution in pregnancy, breastfeeding, for children, and with chronic disease unless cleared by a clinician.
Choose reputable, tested suppliers; correct identification is essential for wild-harvested plants.