Black Alder

Other Name(s):

Aliso Negro, Alnus barbata, Alnus glutinosa, Aulne Glutineux, Aulne Rouge, Aune, Aunette, Betula Alnus, Betula glutinosa, Common Alder, English Alder, European Alder, European Black Alder, Owler.


Black alder is a plant. The bark is used to make medicine.

People take black alder for intestinal bleeding and sore throat.

Black alder is sometimes used as a gargle for sore throat, especially strep throat.

How does it work?

There isn't enough information to know how black alder works.

Uses & Effectiveness

Insufficient Evidence to Rate Effectiveness for...

  • Bleeding in the intestines.
  • Sore throat, when taken by mouth or used as a gargle.
  • Other conditions.
More evidence is needed to rate the effectiveness of black alder for these uses.

Natural Medicines Comprehensive Database rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, and Insufficient Evidence to Rate (detailed description of each of the ratings).


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Side Effects

There isn't enough information to know if black alder is safe.

Special Precautions & Warnings

Pregnancy and breast-feeding: Not enough is known about the use of black alder during pregnancy and breast-feeding. Stay on the safe side and avoid use.


The appropriate dose of black alder depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for black alder. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.


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Reviewed on 6/14/2021

Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

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