How to Maximize Licorice Root Absorption
Licorice root has been used for centuries to support digestive comfort, respiratory health, and adrenal balance. Yet getting consistent results from a supplement depends less on the plant itself and more on how well its active compounds — primarily glycyrrhizin and its metabolite glycyrrhetinic acid — actually reach your bloodstream. Understanding what limits licorice root absorption gives you a practical edge.
What Limits Absorption
Glycyrrhizin is a large, polar saponin molecule. Its size and water-solubility make passive intestinal absorption slow and variable. Intestinal bacteria metabolise glycyrrhizin into glycyrrhetinic acid before a significant portion enters circulation, so the composition of your gut microbiome genuinely affects how much active compound you absorb (Isbrucker & Burdock, 2006).
First-pass hepatic metabolism further reduces bioavailability after oral dosing, which is why the same dose can produce very different plasma levels between individuals.
Cofactors That Help
Lipids enhance absorption of fat-soluble plant compounds in general. Although glycyrrhizin itself is water-soluble, standardised licorice extracts often contain additional flavonoids and triterpenoids that benefit from a small amount of dietary fat at the time of dosing.
Black pepper extract (piperine) has been shown in controlled studies to improve absorption of several plant-derived compounds by inhibiting intestinal and hepatic metabolism (Shoba et al., 1998). While most research on piperine focuses on curcumin, the enzyme inhibition mechanism is relevant for other phytochemicals processed by similar pathways.
Maintaining a healthy gut microbiome through prebiotic foods or probiotics may support more consistent conversion of glycyrrhizin to its bioactive form, since the conversion relies on bacterial enzymes.
Form and Timing Effects
DG (deglycyrrhizinated licorice) preparations remove most glycyrrhizin and are used specifically for gastric comfort — they do not deliver the systemic effects associated with glycyrrhizin. If systemic support is your goal, choose a standardised whole-root extract or a product specifying glycyrrhizin content.
Liquid extracts and tinctures generally reach peak plasma concentration faster than compressed tablets due to faster disintegration and dissolution. Capsule supplements like OstroVit Licorice VEGE 90caps provide measured, standardised dosing and are well suited to a twice-daily protocol with meals.
Taking licorice root with or shortly after a light meal that contains some fat may modestly improve absorption compared to a completely fasted state, and it also reduces the chance of gastric discomfort.
Food Pairings
Avoid taking licorice root at the same time as high-fibre supplements or foods. Soluble fibre can bind to plant saponins in the digestive tract and reduce their availability for absorption. Spacing a high-fibre meal or psyllium supplement by at least 30 minutes is a practical precaution.
Pairing with small amounts of healthy fats — a few nuts, a teaspoon of olive oil, or a light meal containing some fat — is a sensible practice for standardised herbal extracts generally.
Note that liquorice significantly modulates potassium and sodium handling. Those managing cardiovascular health or taking relevant medications should consult a healthcare professional before regular use.
Practical Tips
- Choose a standardised extract specifying glycyrrhizin content, not a plain powdered root with unknown potency.
- Take with a small meal that includes some fat; avoid taking alongside large fibre supplements.
- If you stack with piperine-containing products, dose them together.
- Use twice-daily dosing to maintain more stable plasma levels rather than a single large dose.
- Cycle usage: extended daily use of glycyrrhizin-containing preparations is not recommended for prolonged periods without medical supervision.
You can browse available licorice root supplements at maxfit.ee.
References
Isbrucker, R. A., & Burdock, G. A. (2006). Risk and safety assessment on the consumption of Licorice root (Glycyrrhiza sp.), its extract and powder as a food ingredient, with emphasis on the pharmacology and toxicology of glycyrrhizin. Regulatory Toxicology and Pharmacology, 46(3), 167–192. https://pubmed.ncbi.nlm.nih.gov/16884839/
Shoba, G., Joy, D., Joseph, T., Majeed, M., Rajendran, R., & Srinivas, P. S. (1998). Influence of piperine on the pharmacokinetics of curcumin in animals and human volunteers. Planta Medica, 64(4), 353–356. https://pubmed.ncbi.nlm.nih.gov/9619120/
Wang, Z. Y., & Nixon, D. W. (2001). Licorice and cancer. Nutrition and Cancer, 39(1), 1–11. https://pubmed.ncbi.nlm.nih.gov/11588889/
FAQ
Does taking licorice root with food improve absorption?
Yes, taking licorice root with a small meal that includes some dietary fat is likely to support better absorption of the fat-associated compounds in whole-root extracts, and it also reduces the chance of stomach discomfort.
What is the difference between DG licorice and standard licorice root?
Deglycyrrhizinated (DG) licorice has most of the glycyrrhizin removed. It is used for digestive comfort but does not deliver the systemic effects linked to glycyrrhizin. Standard standardised extracts retain glycyrrhizin and are used when broader effects are the goal.
How long does it take for licorice root to show effects?
Individual response varies with gut microbiome composition and metabolic rate. Most people report noticing effects related to digestive comfort within a week of consistent use, while systemic effects may take two to four weeks of regular supplementation.
