The excipients used for eye drops are high-risk excipients like for injections, so they have extremely high requirements for the quality.
Compared with vegetable glycerin, our synthetic glycerin is different from vegetable glycerin in terms of smell, character and stability. For R&D personnel, the use of synthetic glycerin can effectively solve the problem of excessive impurity peaks in products.
In addition, our injection-grade synthetic glycerin can also be used for corneal preservation. The corneal yellowing that occurs when using vegetable glycerin is resolved after using synthetic glycerin.