Intranasal Red Light — COVID-19 Pilot

Wavelength: 670 nm
Irradiance: 10 mW/cm²
Dose: 4 J/cm²
Duration: 5 min 3×/day × 10 days (intranasal)

Category: Respiratory & Lung

Journal: Frontiers in Medicine (2022)

Key finding

Pilot study: rapid resolution of anosmia and nasal inflammation; reduced nasal viral shedding markers at day 5.