A 5% loss in water from its initial value is considered a significant change for a product packaged in a semi-permeable container after an equivalent of three months’ storage at 40 °C/not more than (NMT) 25% RH. However, for small containers (1 ml or less) or unit-dose products, a water loss of 5% or more after an equivalent of three months’ storage at 40 °C/NMT 25% RH may be appropriate, if justified