Enhanced Pilocarpine Formulations with Improved Stability and Shelf Life

This inventive concept introduces a system, method, and composition for preparing and manufacturing stable pilocarpine formulations with improved shelf life, addressing the limitations of existing formulations in terms of pH control, buffer composition, and storage conditions.

The original patent disclosed pilocarpine formulations with reduced buffer content, but these formulations still faced challenges in maintaining stability and shelf life. The new inventive concept addresses these limitations by introducing a modified buffer solution, pH adjustment, and optimized storage conditions, ensuring improved stability and shelf life of the pilocarpine compositions.

The new inventive concept comprises a system for preparing stable pilocarpine formulations, including a mixing unit for combining pilocarpine compound(s) with a modified buffer solution, and a processing unit for adjusting the pH of the resulting mixture to between about 3 and about 6. The modified buffer solution comprises a combination of citrate and phosphate buffers, allowing for more precise pH control. The pH-adjusting agent, such as sodium hydroxide, ensures the desired pH range. The resulting composition maintains at least about 99% of the pilocarpine compound originally present when stored under conditions comprising a temperature of about 25°C±2°C and a relative humidity of about 60%±5%.

The new inventive concept introduces a novel combination of modified buffer solution, pH adjustment, and optimized storage conditions, which provides a significant improvement over the existing pilocarpine formulations. The use of a citrate and phosphate buffer combination and the precise pH control using a pH-adjusting agent are new and non-obvious features that address the limitations of the original patent.

Alternative embodiments of the inventive concept could include the use of different buffer combinations, pH-adjusting agents, or storage conditions. Additionally, the system and method could be adapted for the preparation of other ophthalmic compositions or pharmaceuticals.

The enhanced pilocarpine formulations with improved stability and shelf life have significant commercial potential in the ophthalmic industry, particularly in the treatment of presbyopia and other age-related eye conditions. The target market includes pharmaceutical companies, ophthalmic manufacturers, and healthcare providers.