Therio-Gel (formaly known as Pre-Seed) is shown in independent studies to maintain better sperm function than other lubricants. Based on the same isotonic formula as the only lubricant ever with specific indications of use allowed to include human fertility interventions.
The wonderful product Pre-Seed VM (which used to be Pre-Seed EQ) is changing its name. The new name is Therio-Gel. The new bottle size is 3.6oz.