Pega-what?

Looking through the pharmacy shelves in our local Canadian grocery store, I discovered an unmistakable classical connection, but I’m not sure of the reason behind it, nor do I wish to explore further, but here it is: Pegalax, a laxative for the relief of constipation. The design on the package is great, and we do have English words from the Latin root laxō, laxāre a verb which means “I open out, undo, slacken,” including relax (undo from work, as on a vacation) and lax (slack in upholding rules or requirements). In mythology Pegasus is the great winged horse who sprang from the blood of Medusa.