Black haw

Ask a doctor, pharmacist, or other healthcare provider if it is safe for you to use this product if you have:

• a history of kidney stones;

• asthma; or

• a history of severe allergic reaction to aspirin.

It is not known whether black haw will harm an unborn baby. But black haw may affect the uterus and is considered possibly unsafe to use during pregnancy. Do not use this product without medical advice if you are pregnant.

Black haw may pass into breast milk and may harm a nursing baby. Do not use this product without medical advice if you are breast-feeding a baby.

Do not give any herbal/health supplement to a child without medical advice.

Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra black haw to make up the missed dose.

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Although not all side effects are known, black haw is thought to be possibly safe when taken by mouth as a medicine.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

When considering the use of herbal supplements, seek the advice of your doctor. You may also consider consulting a practitioner who is trained in the use of herbal/health supplements.

If you choose to use black haw, use it as directed on the package or as directed by your doctor, pharmacist, or other healthcare provider. Do not use more of this product than is recommended on the label.

Do not use different forms (tablets, liquid, tincture, teas, etc) of black haw at the same time without medical advice. Using different formulations together increases the risk of an overdose.

Call your doctor if the condition you are treating with black haw does not improve, or if it gets worse while using this product.

Store at room temperature away from moisture and heat.

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra black haw to make up the missed dose.

There is no recent clinical evidence to guide dosage of black haw. The root or stem bark has been traditionally used at a typical dose of 4 g.

Use in pregnancy and lactation should be discouraged because of insufficient safety data.

Black haw is a large shrub or small tree with white flowers and shiny, juicy, blue-black berries that is native to the eastern and central United States. An extensive study of Viburnum botany and pharmacognosy was published in 1932. 1 The southeastern US species V. alnifolium Marsh. has been used to adulterate V. prunifolium , 2 as has mountain maple ( Acer spicatum ), 3 and confusion as to the identity of commercial samples muddled early research on black haw. The root bark is preferred to the trunk bark as the usual drug product.

There is no recent clinical evidence to guide dosage of black haw. The root or stem bark has been traditionally used at a typical dose of 4 g.