Why is polyetheylene glycol used in vitamin supplements?

Answer#1

As a dispersant (aids dissolution) and an excipient. An excipient is an inactive substance used as a carrier for the active ingredients of a medication.

For example, 2mg Valium uses starch as an excipient, so that the tiny amount of Valium can be handled with ease as a tablet. Trying to measure 2mg of pure Valium would be difficult, time consuming and dangerous.