Monday, September 7, 2026

The Medicinal Uses of Licorice

Disclaimer.  I am not a licensed health practitioner.  This is just another post on an item you might wish to have available if needed so that a physician can treat you and your family as best as possible.  No medication, including those available over the counter, should be taken without consulting a physician.  Information shared here is for educational and entertainment purposes only.  It is not medical advice nor a substitute for licensed medical care.  A qualified, licensed physician or other medical provider should be consulted before beginning any herbal or conventional treatment.

Here on the blog, I really like to focus on herbs that are sustainable, either plants that are easily raised at home or readily identified and located in the wild.  And while licorice can apparently be grown easily, it takes several years before harvesting it for medicine.  So in this case, we need to make an exception.  

Licorice is one powerful herb to add to the alternative medicine arsenal.  It can be grown at home.  (I haven't tried it yet--hopefully in the new house.)  But because it has so many unique properties and fills needs no other easily accessible herb can, it's one to have on hand.

Licorice is the best synergist when dealing with Gram-negative bacteria (Shigella, Salmonella, Enterobacter, Klebsiella, Streptococcus, Staphylococcus, Cholera, etc.).[i]  Licorice works well with other herbs in treating these infections, as well as with conventional pharmaceuticals, especially when using penicillins, cephalosporins (Keflex), or fluoroquinolones (Cipro).[ii]  It is very rarely used alone and never for extended periods.

However, licorice is employed more for its antiviral properties.  Licorice is extremely effective against:
  • Dengue
  • Enterovirus 71
  • Hepatitis A, B, C and more
  • Influenza A
  • Measles
  • Polio
  • RSV
  • Rotavirus
  • SARS-related coronavirus
  • Tick-borne encephalitis
  • Viral pneumonia
  • West Nile
  • Yellow fever[iii]
Unfortunately, there is very little information on dosing for treating any of these conditions.  As licorice is never used alone, but rather in conjunction with other herbs, presumably the licorice is used as long as the other herbs are being administered.

Time to harvest:  If you are growing your own or finding it in the wild, make sure the roots are at least 3-4 years old.  The roots have their greatest content of glycyrrhizin in August and September.  If you are purchasing licorice, Glycyrrhiza glabra is best.  Do not purchase deglycyrrhized licorice.  It won't work as an antiviral. 

Medicinal uses:  In addition to its antimicrobial uses, licorice is used to relieve a dry cough, canker sores, and sore throat.[iv]  This sweet herb helps heal the mucosa, especially intestinal mucosa, and is thus helpful when dealing with GERD, acid reflux, and peptic and duodenal ulcers.  Herbal practitioners also use licorice in treating adrenal fatigue, chronic fatigue, and rheumatoid arthritis.[v]

PREPARATIONS

Capsules or powder.  4 grams daily in three divided doses.[vi]

Tincture.  1:5 ratio of herb by weight to fluid by volume, with the fluid being half 100-proof alcohol and half water.  The recommended dosage is 10 drops up to 3 times per day, when combined with other herbs.  Licorice is best used in formulas, not alone.[vii]  Studies show that glycyrrhizin is extracted better in slightly acidic water, so add a tablespoon of vinegar to the water.  You can also purchase licorice tinctures online.  Keep in mind, especially with licorice, that a tincture is stronger than a tea.  It functions like a corticosteroid, and in large doses (or in people with high blood pressure or kidney problems) it can cause side effects of water retention and bloating.

Infusion.  Simmer 1/2 - 1 teaspoon powdered root in 8 ounces water uncovered, and then strain.  Drink up to 3 cups per day.  May be taken up to every two hours in acute conditions.[viii]

Contraindications.  Licorice is not for use in people with hypertension, anemia, hypokalemia, hypernatremia, or low testosterone levels.  Short term use, ten days or less, in these people is fine.[ix] 

Cautions.  Do not use alone.  Do not use for more than six weeks.  Do not use if taking estrogenic pharmaceuticals, glycosides, diuretics, spironolactone, amiloride, corticosteroids, hydrocortisone.[x]

References:

[i] Stephen Buhner, Herbal Antivirals, 219.
[iii] Herbal Antivirals, 218.
[iv] Joseph Alton, The Survival Medicine Handbook, 83; Sam Coffman, The Herbal Medic, 246.
[v] Sam Coffman, The Herbal Medic, 246.
[vi] Herbal Antivirals, 211.
[vii] Herbal Antibiotics, 371.
[viii] Herbal Antivirals, 211.
[ix] Herbal Antivirals, 213.
[x] Ibid.