What is it?
Black haw is an herbal medicine/supplement used to treat menopause symptoms and reduce blood pressure.
Other names for Black haw include: Black haw bark, Cramp bark, Sweet viburnum, American sloe, Stag bush.
Ask your doctor, nurse, or pharmacist if you need more information about this medicine or if any information in this leaflet concerns you.
Tell your doctor if you
- are taking medicine or are allergic to any medicine (prescription or over-the-counter (OTC) or dietary supplement)
- are pregnant or plan to become pregnant while using this medicine
- are breast feeding
- have any other health problems, such as high blood pressure or heart or blood vessel disease
Talk with your caregiver about how much black haw you should take. The amount depends on the strength of the medicine and the reason you are taking black haw. If you are using this medicine without instructions from your caregiver, follow the directions on the medicine bottle. Do not take more medicine or take it more often than the directions tell you to.
To store this medicine:
Keep all medicine locked up and away from children. Store medicine away from heat and direct light. Do not store your medicine in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down and not work the way it should work. Throw away medicine that is out of date or that you do not need. Never share your medicine with others.
Drug and Food Interactions:
Do not take black haw without talking to your doctor first if you are taking:
- Medicines that thin the blood (example: warfarin (Coumadin(R)). (1)
- Before taking black haw, tell your doctor if you are pregnant or breast feeding
Call your doctor right away if you have any of these side effects:
- Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing, or rash.
Other Side Effects:
You may have the following side effects, but this medicine may also cause other side effects. Tell your doctor if you have side effects that you think are caused by this medicine.
- Taking too much black haw may cause unusual bruising, dizziness, or weakness.
1. Product Information: COUMADIN(R) oral tablets, IV injection, warfarin sodium oral tablets, IV injection. Bristol-Myers Squibb Company, Princeton, NJ, 2007.
Last Updated: 1/4/2011