The famous topical cream used for the relief of hemorrhoids - trademarked, of course.

Best used at the first onset of symptoms to avoid further discomfort or irritation. The products should especially be used at night, in the morning and after each bowel movement. It comes in several forms: ointment/cream, hydrocortisone 1% anti-itch cream, suppositories and cooling gel.

All forms claim to temporarily shrink hemorrhoidal tissue and relieve burning sensation. Some are marketed for temporary relief of itching, others for coating and protecting the inflamed, irritated anorectal surface to help make bowel movements less painful.

Curiously, I remember that a professor at uni said that Preparation H (TM) was also famous of its anti-wrinkle effect on face skin. Hmmm.... I wonder if the formulation is still the same.

I attempted to look up it's ingredients on, but it still remains elusive.
Who invented it?