Probiotics packaged in stick packs face unique challenges when it comes to maintaining potency to meet end of shelf life label claims. The small format doesn’t allow for a traditional “drop-in” desiccant solution, like a sachet or canister, to protect the contents. However, Aptar CSP has partnered with ProAmpac to offer a moisture-adsorbing flexible packaging solution powered by CSP’s 3-Phase Activ-Polymer™ technology. This high-performance solution can be seamlessly integrated into probiotic stick packs or pouches to adsorb moisture, effectively controlling water activity throughout shelf life to help maintain strain viability. The solution is also suitable for protecting bulk hydroscopic powders and blends, maintaining potency and reducing clumping.