The Hydroalcoholic Extract of Uncaria tomentosa (Cat’s Claw) Inhibits the Infection of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) In Vitro

Figure 1

Viability of Vero E6 cells in the presence of the U. tomentosa extract. The figure represents the viability percentage of Vero E6 cells after 48 h of treatment with U. tomentosa (3.1 to 50.0 μg/mL). The viability percentages of treated cells were calculated based on the average absorbance control of cells without treatment. Chloroquine (CQ) was used as an inhibition control of the antiviral strategy. Bars represent mean values ± SEM (2 independent experiments with four replicates of each experiment were performed, n = 8).