What to Stack with Licorice Root: Synergies and Conflicts
Licorice root (Glycyrrhiza glabra and related species) contains glycyrrhizin and its metabolite glycyrrhizic acid, along with flavonoids such as liquiritigenin. It has a long history of use for gastrointestinal support, and modern research has explored its effects on cortisol metabolism and mucosal health. Licorice root stacking requires more attention than many other herbal supplements because of glycyrrhizin's potent activity on mineralocorticoid pathways.
Evidence-Based Synergies
Digestive Enzymes and Probiotics
Licorice root has been studied for its gastroprotective and mucosal-soothing properties. Combining it with a digestive enzyme complex or a probiotic can support different aspects of digestive health simultaneously — licorice root addresses the mucosal layer while enzymes and probiotics support digestion and microbiome balance. This is a low-risk combination from a pharmacological standpoint.
DGL (Deglycyrrhizinated Licorice) with Zinc-Carnosine
DGL — licorice with most glycyrrhizin removed — is specifically formulated for gastrointestinal use without the systemic hormonal side effects of whole root. Combining DGL with zinc-L-carnosine is studied in the context of gastric mucosal integrity (Mahmood et al., 2007). Both support the stomach lining and are well matched as a complementary pair.
Adaptogens (Ashwagandha, Rhodiola)
Licorice root is used in some traditional formulations alongside other adaptogens for adrenal and stress-axis support. At low doses, this is generally well tolerated. The combination is primarily traditional in its evidence base, and users seeking consistent clinical evidence should temper expectations.
Antagonistic Combinations
Antihypertensive Medications
Glycyrrhizin inhibits 11beta-hydroxysteroid dehydrogenase type 2, an enzyme that protects mineralocorticoid receptors from cortisol. This leads to sodium retention and potassium loss, raising blood pressure. In individuals on antihypertensive medication, standard-dose whole licorice root can meaningfully antagonise blood-pressure control (Størmer et al., 1994). This is a confirmed pharmacological interaction.
Thiazide Diuretics and Other Potassium-Depleting Agents
Licorice root's mineralocorticoid-like activity already reduces serum potassium. Combining it with potassium-depleting diuretics amplifies hypokalemia risk — a combination to avoid in clinical practice.
Corticosteroid Medications
Glycyrrhizin prolongs the half-life of cortisol and can interact with exogenous corticosteroids. Those on prednisone or similar medications should not use whole licorice root without medical guidance.
High-Caffeine Products
Licorice root can raise blood pressure. Combining it with high-dose caffeine products in the same session may compound cardiovascular stimulant effects.
Timing Within a Stack
| Goal | Licorice Root Timing | Pairing |
|---|---|---|
| Digestive support | Before or with meals | Digestive enzymes, DGL |
| Adrenal / stress axis | Morning only (cortisol-rhythm aligned) | Low-dose adaptogen |
| Mucosal health | Away from food (DGL form preferred) | Zinc-carnosine (zinc) |
Whole licorice root should generally be cycled — most sources suggest no more than 4–6 weeks of continuous use at meaningful doses, with a break before resuming.
Sample Stacks by Goal
Digestive and gut lining support: OstroVit Licorice VEGE 90caps + probiotic from seedimisensuumid-ja-probiootikumid. Take licorice with meals and probiotic at a different time of day.
Adrenal support: Low-dose licorice root (use as directed on the label of OstroVit Licorice VEGE 90caps) + ashwagandha in the morning. Avoid prolonged use and monitor blood pressure.
Gut mucosal health (lower-risk protocol): DGL form paired with zinc supplement. Prefer this over whole root for extended use.
All products available at maxfit.ee in the lagritsjuur and seedimine-ja-seedetrakti-tervis categories.
What to Avoid
- Daily use of whole root extract for more than 4–6 weeks without a break: glycyrrhizin accumulates and raises blood pressure.
- Combining with antihypertensives, diuretics, or corticosteroids: confirmed pharmacological interactions.
- High caffeine in the same session: additive blood pressure effects.
- Assuming DGL and whole root are equivalent: they are not — DGL is specifically processed to reduce glycyrrhizin and is safer for extended digestive use.
FAQ
Is licorice root safe to take every day?
Whole licorice root (containing glycyrrhizin) is not recommended for continuous daily use over several weeks at doses that deliver meaningful glycyrrhizin exposure. DGL formulations, from which most glycyrrhizin has been removed, are better suited to ongoing daily use. Blood pressure monitoring is prudent if using whole root regularly.
What is the difference between licorice root and DGL?
DGL stands for deglycyrrhizinated licorice — licorice root that has had approximately 97% of its glycyrrhizin content removed. This eliminates most of the mineralocorticoid side effects while preserving the flavonoid and mucosal-support properties. DGL is the preferred form for digestive applications.
Can licorice root be combined with adaptogenic supplements?
At low to moderate doses, combining licorice root with other adaptogens such as ashwagandha is generally well tolerated in short-term use. Licorice root has traditional use in adrenal-support formulations. However, blood pressure should be monitored, particularly if any of the adaptogens are stimulating.
References
Mahmood, A., FitzGerald, A. J., Marchbank, T., Ntatsaki, E., Murray, D., Ghosh, S., & Playford, R. J. (2007). Zinc carnosine, a health food supplement that stabilises small bowel integrity and stimulates gut repair processes. Gut, 56(2), 168–175. https://pubmed.ncbi.nlm.nih.gov/16777920/
Størmer, F. C., Reistad, R., & Alexander, J. (1994). Glycyrrhizic acid in liquorice — evaluation of health hazard. Food and Chemical Toxicology, 32(4), 303–312.
