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Effect of Local Treatment(Carrageenan Nasal Spray and PVP-I Mouthwash) in Reducing Viral Load in Patients With COVID-19

Investigating the Therapeutic Role of Topical Medical Treatment in Oral and Nasal Cavities on the Patients With Positive Severe Cute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infection

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05049213
Acronym
LT-COVID19
Enrollment
7
Registered
2021-09-20
Start date
2022-06-24
Completion date
2022-08-01
Last updated
2023-08-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Covid19, SARS-CoV 2 Infection

Keywords

COVID-19, Anti-septic, Carrageenan, Nasal spray, Povidone-Iodine(PVP-I), Gargle, Mouthwash

Brief summary

The goal of this study is to recruit confirmed Covid-19 patients, to evaluate whether the topical anti-septic can improve clinical outcome in early Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2) infection. During the global pandemic period, an effective and highly available method once be identified, it will reduce the risk of disease transmission and lower the medical burden.

Detailed description

Oral and nasal disinfection, a simple method with the application of commonly used antiseptic agents is frequently performed in the otolaryngology and dental practice. The ability to deactivate viral particles with a good safety profile may be an important benefit in the control of viral proliferation and shedding. Actually, multiple anti-septic agents demonstrated virucidal properties against SARS-CoV-2 in several in vitro studies. Among these, Povidone-Iodine (PVP-I), common usage in otolaryngology operation and topical therapy, showed high virucidal properties (0.45% PVP-I, throat spray, 4-log drop in viral load) and of great safety. There is also evidence that topical usage of saline can decrease the severity of upper respiratory tract infection. In addition, carrageenan, a sulphated polysaccharide purified from red marine algae, had shown efficacy in inhibiting multiple viruses, including in vitro studies of SARS-CoV-2. Some randomized controlled trials had also shown their abilities in improving patients' symptoms with a good safety profile. Multiple international organizations are conducting relating randomized clinical trials to evaluate whether the topical anti-septic improves clinical outcomes after early SARS-CoV-2 infection. The added value of topical antiseptic agents may be beneficial in improving symptoms, reducing viral load and alleviating the rate of disease progression. Due to relatively low risk, well-toleration to the general population, and highly available characteristics, the potential benefits of these agents deserve more attention. The goal of this study is to investigate the changes in clinical symptoms and sequential laboratory data in confirmed COVID-19 adult patients at the early disease stage. By applying topical anti-septic which is frequently used in otolaryngology procedures, the investigators will evaluate the impact of this intervention on the symptoms, viral load and the rate of disease progression. During the global pandemic period, an effective and highly available method once be identified, it will reduce the risk of disease transmission and lower the medical burden.

Interventions

DRUGCarrageenan nasal spray and 1% PVP- mouthwash and gargle

Day1 to Day7 1. Intranasal spray 3 times/day, 2\ 3 spray/nostril/per time 2. Oral gargling 3 times/day, 15cc/per time

Sponsors

National Taiwan University Hospital
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
20 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. age older than 20 years of age 2. admission with a confirmed positive test for SARS-CoV-2 infection by reverse transcription polymerase chain reaction (RT- PCR) 3. disease onset (start of COVID-19 symptom and PCR test) for ≤ 120 hours 4. available informed consent of this study. 5. Full COVID-19 vaccination(at least after 2nd dose of TFDA-approved vaccine 14 days)

Exclusion criteria

1. receiving oxygen supply before intervention 2. known intolerance/allergy to the study drugs 3. pregnancy 4. sinus/oral operation within 30 days of the beginning of the study 5. using intranasal medication before randomization 6. no available informed consent 7. inability to self-care or reply to questionnaire

Design outcomes

Primary

MeasureTime frameDescription
Change from baseline naso-pharyngeal viral load quantified by RT-PCR at Day 87 daysthe mean change of viral titers of COVID-19 between Day 1 and Day 8 by RT-PCR test

Secondary

MeasureTime frameDescription
frequency of adverse effects of interest after anti-septic10 daysincluding nasal discomfort, sneezing, epistaxis, headache and otalgia
number of days in an ICUup to 14 daysnumber of days in an ICU
number of days Non Invasive Ventilation (NIV) was required during hospitalizationup to 14 daysNIV usage during hospitalization
symptoms related to COVID-1910 daysincluding cough, fatigue, shortness of breath, loss of smell, hoarseness, chest pain, abdominal pain, diarrhea, headache, sore throat, muscle pain, etc and Quality of Life using the validated SinoNasal Outcome Tool-22 (SNOT-22, total score range 0-110, higher scores represent worse symptoms)
length of hospitalizationup to 14 dayslength of hospitalization
days of dischargeup to 30 daysfree from quarantine
mortality ratesup to 30 daysmortality rates

Countries

Taiwan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026