Over The Counter (OTC) unit dose products, such as tablets or capsules, often come in high barrier, mixed material blister packaging. These rely on complex, multi-layered materials that combine plastics and foils to deliver the high moisture and oxygen barrier properties required to protect the product. 

Since the mixed materials used are not easily separated or processed by most recycling systems, these packages are not recyclable through standard municipal waste streams. With growing demand for OTC products globally, there is a parallel rise in the volume of non-recyclable blister packaging entering the waste stream. 

There is a clear need to identify or develop high-barrier unit dose packaging alternatives that are both functional and recyclable, to reduce landfill waste and advance the broader goals of sustainable packaging.