Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,348 questions · 1,514 findings · 111 reviews · All outcomes

No studies found 287 · 19%GRADE not reported 823 · 54.4%Very low 243 · 16.1%Low 104 · 6.9%Moderate 49 · 3.2%High 8 · 0.5%

Subantimicrobial dose doxycycline (20 mg twice daily for 90 days) vs placebo

Average number of new lesions per week · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Subantimicrobial dose doxycycline (20 mg twice daily for 90 days) led to lower number of new lesions per day compared with placebo; GRADE not reported.

1 finding from 1 review

Tetracycline suspension (250 mg, held in mouth 2 minutes then swallowed, four times daily for 5 days) vs placebo

Adjusted maximum ulcer size and adjusted maximum pain · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…
1 finding from 1 review

LongoVital (herbal component alone) vs placebo

Number of ulcer-free days and number of new ulcers · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…
1 finding from 1 review
  • Kolseth 2005 (high risk of bias): 40 patients randomised to the herbal component of LongoVital alone or placebo; data presented as medians with 95% CIs, unsuitable for further analysis; no statistically significant…
    1 study · 40 participants
    GRADE not reported

Vitamin B12 (sublingual, 1000 mcg daily for 6 months) vs placebo

Frequency of outbreaks per month · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Vitamin B12 (sublingual, 1000 mcg daily for 6 months) led to lower frequency of outbreaks per month compared with placebo; GRADE not reported.

1 finding from 1 review

Tetracycline suspension (250 mg, held in mouth 2 minutes then swallowed, four times daily for 5 days) vs placebo

Average number of new lesions per week · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Tetracycline suspension (250 mg, held in mouth 2 minutes then… showed no clear difference in average number of new lesions per week compared with placebo; GRADE not reported.

1 finding from 1 review

Leukotriene receptor antagonist vs placebo

Total number of new lesions over 2-month treatment period · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Montelukast (leukotriene receptor antagonist; 10 mg daily for 1… led to lower total number of new lesions over 2-month treatment period compared with placebo; GRADE not reported.

1 finding from 1 review

Hydrocortisone (systemic corticosteroid) vs Placebo or no treatment

Outcome not reported · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

The review found no eligible studies for this question.

1 finding from 1 review

Levamisole (150 mg per day) vs placebo

Decrease in number of ulcers · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Levamisole (150 mg per day) showed no clear difference in decrease in number of ulcers compared with placebo; GRADE not reported.

1 finding from 1 review

Pentoxifylline vs placebo

Adverse effects · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…
1 finding from 1 review
  • Systemic interventions for recurrent aphthous stomatitis (mouth ulcers) 2012 · Cochrane All outcomes
    60 days (plus 60-day follow-up)
    Patients receiving pentoxifylline reported more adverse events than those in the placebo group but this was not statistically significant (69% reported adverse effects: dizziness, headaches, stomach upset, increased…
    1 study · 26 participants
    GRADE not reported

Antiseptic mouthwash (e.g. chlorhexidine) vs Another topical agent or placebo

Adverse effects of long‐term use of available topical agents · HIV‐infected adults (> 13 years of age, per CDC) with one or more painful intraoral aphthous ulcers

The review found no eligible studies for this question.

1 finding from 1 review
  • No studies were included in this review. A total of 233 abstracts were retrieved; 25 were selected as potentially eligible but all were excluded (10 reported systemic rather than topical treatment; 3 non‐RCTs; 6…
    0 studies
    No studies found

Topical thalidomide vs Another topical agent or placebo

Healing of ulceration · HIV‐infected adults (> 13 years of age, per CDC) with one or more painful intraoral aphthous ulcers

The review found no eligible studies for this question.

1 finding from 1 review
  • No studies were included in this review. A total of 233 abstracts were retrieved; 25 were selected as potentially eligible but all were excluded (10 reported systemic rather than topical treatment; 3 non‐RCTs; 6…
    0 studies
    No studies found

Levamisole 50 mg three times per day for days 1 and 2 vs Levamisole 50 mg three times per day for day 1 and placebo for day 2 (lower dose)

Effectiveness · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…
1 finding from 1 review
  • A trial at high risk of bias (Zissis 1983) compared two different dose regimens of levamisole (treatment 2 days per week for 16 weeks; a third group received placebo). There was inconsistency in the presentation of the…
    1 study
    GRADE not reported