Reviewed on 6/11/2021
Other Name(s):

Agenia Abyssinica, Banksia abyssinica, Brayera anthelmintica, Cossoo, Hagenia, Hagenia abyssinica, Kooso, Kosso.


Kousso is a plant. The leaves, fruit, and flowers are used to make medicine.

Despite serious safety concerns, people take kousso to get rid of tapeworms.

How does it work?

There isn't enough information to know how kousso might work.


Next to red peppers, you can get the most vitamin C from ________________. See Answer

Uses & Effectiveness

Insufficient Evidence to Rate Effectiveness for...

  • Tapeworms.
  • Other conditions.
More evidence is needed to rate the effectiveness of kousso 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).

Side Effects

Kousso is UNSAFE. It can cause irritation of the stomach and intestines, stomach pain, increased salivation, headache, weakness, unconsciousness, vision disorders, spasms, and shock.


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Special Precautions & Warnings

While taking kousso isn't safe for anyone, some people should be especially careful to avoid it.

Pregnancy and breast-feeding: It's UNSAFE to take kousso if you are pregnant. In addition to serious side effects for the mother, it might cause a miscarriage. It's also UNSAFE to take kousso if you are breast-feeding.

Stomach or intestinal problems: Kousso can irritate the stomach and intestines. Don't use it if you have a digestive tract condition.


The appropriate dose of kousso 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 kousso. 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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Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Health Solutions From Our Sponsors


Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.

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