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Table 4 Adverse reactions to peanut OIT off ketotifen (week 4–44)

From: Effect of ketotifen premedication on adverse reactions during peanut oral immunotherapy

Adverse reactions and treatment

Build-up doses in clinic

Home doses

Ketotifen

Placebo

Ketotifen

PlaceboC

Total no. of doses of OIT, n

61

19

1221

373

Total no. of missed OIT doses, n

-

-

1/1221 (.08%)

-

Total no. of doses with symptoms, n (% of total OIT doses)

19/61 (31%)

15/19 (79%)

156/1221 (13%)

97/373 (26%)

Anaphylaxis, n (% of total OIT doses)

-

-

5/1221 (0.4%)

-

Symptoms n, (% of OIT doses)

Ketotifen

Placebo

Ketotifen

Placebo

Gastrointestinal

9/61 (15%)

15/19 (79%)

95/1221 (8%)

83/373 (22%)

Cutaneous

-

-

12/1221 (0.9%)

15/373 (4%)

Lower respiratory

2/61 (3%)

2/19 (11%)

23/1221 (2%)

12/373 (3%)

Upper respiratory

4/61 (6%)

-

55/1221 (5%)

-

Oropharyngeal

2/61 (3%)

-

12/1221 (0.9%)

-

Cardiovascular

-

-

-

-

Other

8/61 (13%)

-

122/1221 (10%)D

12/373 (3%)D

Treatment n, (% of OIT doses)

Ketotifen

Placebo

Ketotifen

Placebo

Epinephrine

-

-

1/1221 (0.08%)

-

Diphenhydramine

-

-

11/1221 (0.9%)

-

Cetirizine**

-

-

44/1221 (4%)

1/373 (0.2%)

Prednisone

-

-

2/1221 (0.1%)

-

Salbutamol or other inhaled medication

-

-

27/1221 (2%)

9/373 (2%)

  1. COne placebo subject withdrew during the initial 4 weeks of peanut OIT and therefore was not included in these results.
  2. DOther reported symptoms/adverse effects included: atopic dermatitis, headache, gastroenteritis, pinworms, seasonal allergic rhinitis, strep throat and URTI.
  3. **Other second generation antihistamine.