Efficacy of single‐dose and double‐dose ivermectin early treatment in preventing progression to hospitalization in mild COVID‐19: A multi‐arm, parallel‐group randomized, double‐blind, placebo‐controlled trial
Alireza Mirahmadizadeh, Ali Semati, Alireza Heiran, Mostafa Ebrahimi, Abdolrasool Hemmati, Mohammadreza Karimi, Souzan Basir, Marjan Zare, Antonio Charlys Da Costa, Mohammad Zeinali, Maryam Sargolzaee, Owrang Eilami
Respirology, doi:10.1111/resp.14318
Background and objective: Ivermectin is a known anti-parasitic agent that has been investigated as an antiviral agent against coronavirus disease 2019 (COVID-19). This study aimed to evaluate the efficacy of ivermectin in mild COVID-19 patients. Methods: In this multi-arm randomized clinical trial conducted between 9 April 2021 and 20 May 2021, a total of 393 patients with reverse transcription-PCR-confirmed COVID-19 infection and mild symptoms were enrolled. Subjects were randomized in a 1:1:1 ratio to receive single-dose ivermectin (12 mg), double-dose ivermectin (24 mg) or placebo. The primary outcome was need for hospitalization. Results: There was no significant difference in the proportion of subjects who required hospitalization between the placebo and single-dose ivermectin groups (absolute difference in the proportions: À2.3 [95% CI = À8.5, 4.1]) and between the placebo and double-dose ivermectin groups (absolute difference in the proportions: À3.9 [95% CI = À9.8, 2.2]). The odds of differences in mean change in severity score between single-dose ivermectin and placebo groups (OR difference = 1.005 [95% CI: 0.972, 1.040]; p = 0.762) and double-dose ivermectin and placebo groups (OR difference = 1.010 [95% CI: 0.974, 1.046]; p = 0.598) were not statistically significant. None of the six adverse events (including mild dermatitis, tachycardia and hypertension) were serious and required extra action. Conclusion: Single-dose and double-dose ivermectin early treatment were not superior to the placebo in preventing progression to hospitalization and improving clinical course in mild COVID-19.
CONFLICT OF INTEREST None declared.
SUPPORTING INFORMATION Additional supporting information can be found online in the Supporting Information section at the end of this article.
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