which meets standards set Zylophin RX for human consumption. And pharmaceutical grade, which meets pharmaceutical standards. According to Wiktionary, pharmaceutical grade is "A standard of purity suitable for use as a medicine." Apparently most supplements are not labeled with either of these 2 grades. Some say the pharmaceutical grade claim used by some supplement sellers is simply a marketing ploy. Others say it's an important consideration.

https://supplementgear.com/zylophin-rx/