There are not enough scientific information to determine an appropriate range of doses for black haw. Be sure to follow directions on product label and consult your doctor, pharmacist or other health care professional before using this natural remedy for back pain.
Although rare, allergic reactions may occur when taking black haw. If you develop symptoms of an allergic reaction such as hives, closing of your throat; difficulty breathing; swelling of your lips, tongue, or face; stop using black haw at once and seek emergency care
Large doses of black haw may cause: nausea, dizziness, visual disturbances, reduced pulse rate, increased sweating and seizures.
Black haw should not be used by pregnant or breastfeeding mothers. Patients who are allergic to aspirin, and those who have kidney stones are also advised against using black haw.
Do not use different formulations of black haw at the same time, unless instructed by a health care professional. Using different formulations together may increase the risk of an overdose.
The bark and roots of the black haw plant contain pharmacologically active ingredients. These include salicyclic acid, salicin, oxalic acid, tannins, and scopoletin. The salicylate contributes to black haw's anti-inflammatory effect. Black haw may help relieve the discomfort caused by sciatica, spasms of the neck and back and painful menstruation.
