Fig. 2From: Stability of levothyroxine tablets in blister packaging versus bottles and vials under simulated in-use conditionsHardness change of levothyroxine tablets. A Percent hardness change over time: 25 °C/75% RH. B Percent hardness change over time: 25 °C/90% RH. C Total percent hardness change under 90-day patient use or 2-day shipping conditions. Abbreviation: RH, relative humidityBack to article page