Dosage Take 20 drops of Swiss Herbal Remedies crampbark tincture three times daily before meals. Mix with a little water. Alternatively 20 drops can be taken as required last thing at night for example. It can also be used when needed if used for the symptoms of period pain. Ingredients Swiss Herbal Remedies Gymnema leaf tincture is a decocted tincture 13 25% alcohol.