Guaco: what is it for, how to use and contraindications

Guaco is a medicinal plant, also known as snake, liana or snake herb, widely used in respiratory problems due to its bronchodilator and expectorant effect.

Its scientific name isMikania glomerata Sprengand can be purchased at health food stores and drugstores with an average price of 30 reais.

What is it for

Guaco is used to treat flu, cough, hoarseness, throat infection, bronchitis, allergies and skin infections. In addition, this plant is popularly used to treat rheumatism.

What properties

Although several popular therapeutic indications are attributed to guaco, only the bronchodilator, antitussive, expectorant and edematogenic action on the airways has been proven. Other studies show potential anti-allergic, antimicrobial, analgesic, anti-inflammatory, antioxidant and antidiarrheal activity

How to use

For therapeutic purposes the leaves of the plant are used.

1. Guaco tea


  • 10 g of guaco leaves;
  • 500 mL of water.

Preparation mode

Place 10 g of leaves in 500 mL of boiling water for 10 minutes and strain at the end. Drink 2 cups a day. See how to prepare other teas with this plant in 3 Recipes with Guaco Tea to Relieve Cough.

2. Guaco tincture


  • 100 g of crushed guaco leaves;
  • 300 mL of alcohol at 70º.

Preparation mode

Dyeing can be done by leaving 100 grams of the crushed leaves in a dark glass jar with 300 mL of 70 ° alcohol. Leave to stand for 2 weeks in a cool, ventilated place, stirring the mixture once a day. Once filtered, the solution can be used in rubs or local compresses.

Guaco can also be used in the form of a syrup that can be purchased at pharmacies, and must comply with the manufacturer's instructions.

Possible side effects

Side effects of guaco include bleeding, increased heart rate, vomiting and diarrhea. Guaco contains coumarin, which may worsen in cases of shortness of breath and cough in people with a coumarin allergy.

Who should not use

Guaco is contraindicated for people with allergies to this plant, with liver diseases, who use anticoagulants, for children under 1 year of age and pregnant.