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

Millefeuille-des-Marais, Utriculaire, Utriculaire Commune, Utriculaire Vulgaire, Utricularia, Utricularia vulgaris.


Bladderwort is a plant. The dried leaves are used to make a medicinal tea.

People take bladderwort for treating urinary tract disorders including kidney stones and urinary tract infections (UTIs). They also take it to treat spasms, fluid retention, and swelling; to stimulate gallbladder secretions; and to promote weight loss.

Bladderwort is sometimes applied directly to the skin for burns and swelling (inflammation).

How does it work?

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


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Uses & Effectiveness

Insufficient Evidence to Rate Effectiveness for...

More evidence is needed to rate the effectiveness of bladderwort 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

There isn't enough information to know if bladderwort is safe or what the possible side effects might be.


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Special Precautions & Warnings

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


The appropriate dose of bladderwort 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 bladderwort. 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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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.

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