Carbopol® polymers and Noveon® polycarbophil are ideal excipients for formulating oral suspensions and have been used safely and effectively in a variety of commercial products. Due to the three dimensional gel network formed by Carbopol® polymers, they offer longer term stability of suspensions at lower concentrations than competitive materials. Additionally, Carbopol® polymers can mask certain bitter tasting drugs, giving a more pleasant taste to oral suspensions, thus increasing patient compliance. In some cases, Carbopol® polymers can increase the bioavailability of the active drug in the suspension.