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. 2008 Jul 7;378(2):306–310. doi: 10.1016/j.virol.2008.06.005

Table 2.

Stability of chloroquine gel (3 mg/g) after 3 months at 40 °C and 75% relative humidity

Variable Maximum relative change
Appearance No visual change
Mass − 2%
pH − 7%
Osmolality + 1%
Viscosity − 14%
Chloroquine concentration ± 3%