Licorice: How Long Before You Feel the Effects?
On a sore throat, licorice acts almost instantly. On the stomach, it takes a bit more consistency — and above all, never exceed the recommended course length. Here are realistic timelines.
For a sore throat, licorice (yashtimadhu) acts quickly: a tea or decoction brings relief within a few minutes thanks to its soothing effect on the mucous membranes. For digestive comfort and heartburn, the effect needs more consistency: allow 1 to 2 weeks of daily intake for a clear change, especially with the DGL (deglycyrrhizinated) form taken before meals.
One critical point shapes both timelines: licorice containing glycyrrhizin is never taken as an extended course, whatever effect you are after — a safety principle that outweighs the simple question of timing.
What timeline by form and use?
| Use | First signs | Recommended maximum course |
|---|---|---|
| Tea for a sore throat, dry cough | A few minutes to a few hours | Occasional, a few days per episode |
| Digestive comfort, heartburn (DGL) | A few days to 1 week | Several weeks, DGL better suited to longer use |
| Whole root with glycyrrhizin, regular use | 1 to 2 weeks | 4 to 6 weeks maximum, then a break |
This is why the DGL form, stripped of glycyrrhizin, is preferred for extended digestive use: it lets you judge an effect over several weeks without the blood-pressure risk tied to the whole root.
What are the first signs licorice is working?
- Throat and voice: an almost immediate soothing, often from the very first tea;
- Dry cough: reduced irritation within a few hours to a few days of repeated use;
- Heartburn: digestive comfort that generally sets in after a few days to a week of regular intake before meals.
Why never extend a licorice course beyond a few weeks?
Glycyrrhizin, present in the whole root, disrupts the kidneys' regulation of potassium and sodium as it accumulates: it is an effect that depends on cumulative duration of use, not just the one-off dose. That is why the rule of 4 to 6 weeks maximum, followed by a break, outweighs any "longer for a better effect" logic — on the contrary, extending a course raises the risk without demonstrated extra benefit.
When should you conclude licorice is not working for you?
If a sore throat does not improve after a few days of repeated teas, or if heartburn persists after one to two weeks of DGL taken before meals at a proper dose (see our article licorice, benefits and precautions), it is reasonable to see a doctor rather than extend use. A cough lasting more than two to three weeks or frequent heartburn despite adjustments call for medical advice, as detailed in our article acid reflux and heartburn.
How to give it the best chance of working within these timelines
- Prefer a real decoction to a simple infusion for the cut root, which otherwise releases its compounds poorly;
- Take DGL before meals rather than after, for the best effect on the stomach lining;
- Respect the course length rather than extending use hoping for a stronger effect;
- Avoid hidden sources of glycyrrhizin (candy, anise-flavored drinks) during the course, which skew your assessment of the real dose.
Precautions to know during the trial period
Non-deglycyrrhizinated licorice is firmly discouraged with high blood pressure, cardiac treatment, pregnancy or kidney disease, whatever the intended duration. The DGL form removes most of this risk and is better suited to extended digestive use. The full picture of precautions is in our safety guide.
Your questions about licorice
How long does licorice take to soothe a sore throat?
The effect is generally fast, from the first tea or decoction, thanks to the root's soothing action on the mucous membranes. This is occasional use to repeat over a few days, not an extended course.
How long for an effect of licorice on heartburn?
Allow 1 to 2 weeks of regular intake, ideally with the DGL form taken before meals. Heartburn that persists beyond this period despite proper intake calls for medical advice rather than continuing.
Can you take licorice continuously for several months?
Not the whole root containing glycyrrhizin: the rule is 4 to 6 weeks maximum, followed by a break, due to the risk to blood pressure and potassium. The DGL form, without glycyrrhizin, is better suited to extended use.
Why not extend a licorice course even if it seems well tolerated?
Because the risk to blood pressure and potassium depends on cumulative duration of use, not just short-term tolerance. A course that seems to go well can still accumulate glycyrrhizin beyond a reasonable threshold if it runs too long.
Free guide
Your 7-step Ayurvedic morning routine
The condensed dinacharya: seven realistic steps with timings, the 15-minute weekday version and dosha adjustments. Enter your email and read it right away — no PDF to hunt for, no spam.