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Chlorpheniramine, chlorphenamine for COVID-19

Chlorpheniramine, chlorphenamine has been reported as potentially beneficial for treatment of COVID-19. We have not reviewed these studies. See all other treatments.
Valerio-Pascua et al., Chlorpheniramine Intranasal Spray to Accelerate COVID-19 Clinical Recovery in an Outpatient Setting: The ACCROS Trials, Research Square, doi:10.21203/
Abstract Purpose: Our group demonstrated the safety, efficacy, and antiviral effect of intranasally administered Chlorpheniramine Maleate (CPM) for treating coronavirus disease 2019 (COVID-19). Since the nasal cavity is the portal of entry for COVID pathogens, sensory and upper respiratory symptoms (URS) (e.g., cough, ageusia, anosmia, nasal congestion, etc.) are significant symptoms in the course of the disease. Intranasal therapies could alleviate the disease-induced URS faster. This study evaluated the effectiveness and safety of intranasal CPM for treating mild to moderate COVID-19-induced URS in the outpatient setting. Methods: The two-part Accelerating COVID-19 Clinical Recovery in an Outpatient Setting (ACCROS) research study was conducted to collect evidence from a randomized, double-blinded placebo-controlled trial (ACCROS-I). Both parts enrolled patients with mild to moderate COVID-19 confirmed by reverse transcription-polymerase chain reaction. The primary endpoint in ACCROS-I was time to clinical recovery, defined as the change from baseline to day 7 in COVID-19 symptoms reported as the percent change (Δ%) in the daily symptoms score (DSS) and the severity of the disease symptoms using a visual analog scale (VAS), on a scale of 1-10 (10=worst symptoms). COVID-19 patients (n = 101) were recruited and assigned to either a 10-day CPM treatment (n=61) or placebo (PLB) (n=40) in addition to standard of care (SoC). Secondary endpoints included the incidence of hospitalization and the proportion of patients with URS on day 7. ACCROS-II data were collected from medical records of COVID-positive subjects using a standardized form. Cohorts of patients treated with CPM and SoC (CPM+Soc) were compared for the duration of general symptoms and URS. Patient information was collected as part of routine visits and telehealth consultations. Results ACCROS-I: There was a statistically significant difference in the rate of clinical recovery (P<0.05) in Δ%DSS (M -18.8±SEM 7.9%) and Δ%VAS (-8.6±5.1%), such that the CPM group reported fewer symptoms than PLB. The proportion of patients who reported sensory deficits and URS at day 7 was significantly lower (P<0.05) in CPM vs. PLB for ageusia (1.7% vs. 15.0%), cough (16.4% vs. 35.0%) and nasal congestion (8.1%vs.20%). None of the patients required hospitalization. ACCROS-II: There was a statistically significant reduction (P<0.05) in total days reporting URS for general symptoms of COVID-19 in CPM+SoC (5.1 ± 0.1) compared to SoC (11.0 ± 0.2). CPM+SoC users also showed fewer days with cough, anosmia, and ageusia. Persistent anosmia (over 29 days) was found in 3% of the patients on SoC, whereas no persistent anosmia was reported in the CPM+SoC cohort (X2 = 10.18; P<0.001). Conclusion: The result of this two-part study supports the conclusion that intranasal CPM is an antiviral agent that can be administered intranasally to treat COVID-19-induced symptoms effectively. Intranasal CPM..
Please send us corrections, updates, or comments. c19early involves the extraction of 100,000+ datapoints from thousands of papers. Community updates help ensure high accuracy. Treatments and other interventions are complementary. All practical, effective, and safe means should be used based on risk/benefit analysis. No treatment or intervention is 100% available and effective for all current and future variants. We do not provide medical advice. Before taking any medication, consult a qualified physician who can provide personalized advice and details of risks and benefits based on your medical history and situation. FLCCC and WCH provide treatment protocols.
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