Chamomile for Canker Sores: Rinse, Paste and Tea Trials

A chamomile rinse, extract paste and tea infusion are different preparations. The trials below also distinguish easing pain from speeding ulcer healing.

The tincture trial lost more placebo participants

The 2014 triple-blind trial¹’s methods describe 50 people randomized, although its abstract describes 36. The results clarify that 36 completed: four treatment participants and ten placebo participants dropped out. The tested product was Matrica Drop chamomile tincture, used three times daily, rather than brewed tea.¹

At day four, mean pain-and-burning scores were 0.5 with chamomile versus 4.8 with placebo (P<0.001). That is a positive short-term result. The uneven losses weaken confidence in the comparison; the analyzed groups no longer include everyone originally assigned.¹

The paste helped pain, but the steroid healed faster

The 2015 double-blind study² randomized 45 adults; 43 completed. Three groups used chamomile extract in Orabase, triamcinolone in Orabase or the base alone for recent single minor ulcers.²

Both active pastes reduced pain compared with placebo on days three and six. But triamcinolone reduced ulcer size more by day six and shortened time to complete resolution. Chamomile’s day-six ulcer-size comparison with placebo was not statistically significant (P=0.343).²

Pain relief did not establish the same healing result as the steroid.

The 2026 tea study did not establish equivalence

The newer randomized, open-label study included 24 adults, twelve per group. It compared a chamomile tea swish-and-spit regimen with 0.1% triamcinolone oral paste, both used twice daily for one week. Neither participants nor outcome assessors were blinded.³

At day seven, mean burning scores were 0.83 with tea and 0.41 with triamcinolone (P=0.155). Both groups improved. A nonsignificant difference in this small comparison does not prove equal effectiveness. Without a placebo or untreated group, it also cannot separate improvement from the usual healing course.³

The NHS⁴ notes that mouth ulcers commonly settle within one or two weeks.⁴ A before-and-after improvement over seven days therefore needs a useful comparison, even when the symptom feels much better.

Check the preparation and the reason for the sore

NCCIH⁵ describes chamomile rinses as possibly safe at certain doses for short periods. That is not a blanket safety judgment for every extract or essential oil. Allergy is more likely with sensitivities to related plants, including ragweed, chrysanthemums, marigolds or daisies. Reported medicine interactions include warfarin; ask a pharmacist or clinician about your medicines before medicinal use. Pregnancy and breastfeeding safety information is limited.⁵

Bring the product label and ask which goal the evidence supports: pain relief, a smaller ulcer or complete healing. Record when the sore began, before treatment.

See a dentist or doctor for an ulcer lasting longer than three weeks, one unlike your usual sores, or one that bleeds or becomes more painful and red. Avoid very hot drinks on the sore.⁴ Our canker-sore guide covers the broader assessment.

Chapter 3’s “The Red-Flag List” in Is It My Breath? explains why a persistent ulcer needs examination before another rinse. A symptom diary can help describe it; it cannot identify the cause.