Table 1 Virucidal activity of PVP-I gargle/mouthwash against SARS-CoV-2 (data are presented as log10 reduction in viral titres with respect to control)

From: In vitro virucidal activity of povidone iodine gargle and mouthwash against SARS-CoV-2: implications for dental practice

PVP-I concentration Log10 reduction in viral titres
Clean conditions* Dirty conditions**
15 secs 30 secs 60 secs 15 secs 30 secs 60 secs
Undiluted >5.00 >5.00 >5.00 >5.00 >5.00 >5.00
1:2 dilution >4.00 >5.00 >5.00 >4.00 >5.00 >5.00
Key:
* = clean conditions: 0.3 g/l bovine serum albumin
** = dirty conditions: 3.0 g/l bovine serum albumin + 3 ml/l human erythrocytes