Effect of Doxepin Mouthwash or Diphenhydramine-Lidocaine-Antacid Mouthwash vs Placebo on Radiotherapy-Related Oral Mucositis Pain

医学 粘膜炎 苯海拉明 安慰剂 多塞平 麻醉 利多卡因 抗酸剂 随机对照试验 外科 内科学 化疗 组胺 病理 替代医学
作者
Terence T. Sio,Jennifer Le‐Rademacher,James L. Leenstra,Charles L. Loprinzi,G.P. Rine,Amarinthia Curtis,Anurag K. Singh,James A. Martenson,Paul J. Novotny,Angelina D. Tan,Rui Qin,Stephen Ko,Paul L. Reiter,Robert C. Miller
出处
期刊:JAMA [American Medical Association]
卷期号:321 (15): 1481-1481 被引量:62
标识
DOI:10.1001/jama.2019.3504
摘要

Importance

Oral mucositis causes substantial morbidity during head and neck radiotherapy. In a randomized study, doxepin mouthwash was shown to reduce oral mucositis–related pain. A common mouthwash comprising diphenhydramine-lidocaine-antacid is also widely used.

Objective

To evaluate the effect of doxepin mouthwash or diphenhydramine-lidocaine-antacid mouthwash for the treatment of oral mucositis–related pain.

Design, Setting, and Participants

A phase 3 randomized trial was conducted from November 1, 2014, to May 16, 2016, at 30 US institutions and included 275 patients who underwent definitive head and neck radiotherapy, had an oral mucositis pain score of 4 points or greater (scale, 0-10), and were followed up for a maximum of 28 days.

Interventions

Ninety-two patients were randomized to doxepin mouthwash (25 mg/5 mL water); 91 patients to diphenhydramine-lidocaine-antacid; and 92 patients to placebo.

Main Outcome and Measures

The primary end point was total oral mucositis pain reduction (defined by the area under the curve and adjusted for baseline pain score) during the 4 hours after a single dose of doxepin mouthwash or diphenhydramine-lidocaine-antacid mouthwash compared with a single dose of placebo. The minimal clinically important difference was a 3.5-point change. The secondary end points included drowsiness, unpleasant taste, and stinging or burning. All scales ranged from 0 (best) to 10 (worst).

Results

Among the 275 patients randomized (median age, 61 years; 58 [21%] women), 227 (83%) completed treatment per protocol. Mucositis pain during the first 4 hours decreased by 11.6 points in the doxepin mouthwash group, by 11.7 points in the diphenhydramine-lidocaine-antacid mouthwash group, and by 8.7 points in the placebo group. The between-group difference was 2.9 points (95% CI, 0.2-6.0;P = .02) for doxepin mouthwash vs placebo and 3.0 points (95% CI, 0.1-5.9;P = .004) for diphenhydramine-lidocaine-antacid mouthwash vs placebo. More drowsiness was reported with doxepin mouthwash vs placebo (by 1.5 points [95% CI, 0-4.0];P = .03), unpleasant taste (by 1.5 points [95% CI, 0-3.0];P = .002), and stinging or burning (by 4.0 points [95% CI, 2.5-5.0];P < .001). Maximum grade 3 adverse events for the doxepin mouthwash occurred in 3 patients (4%); diphenhydramine-lidocaine-antacid mouthwash, 3 (4%); and placebo, 2 (2%). Fatigue was reported by 5 patients (6%) in the doxepin mouthwash group and no patients in the diphenhydramine-lidocaine-antacid mouthwash group.

Conclusions and Relevance

Among patients undergoing head and neck radiotherapy, the use of doxepin mouthwash or diphenhydramine-lidocaine-antacid mouthwash vs placebo significantly reduced oral mucositis pain during the first 4 hours after administration; however, the effect size was less than the minimal clinically important difference. Further research is needed to assess longer-term efficacy and safety for both mouthwashes.

Trial Registration

ClinicalTrials.gov Identifier:NCT02229539
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