I’d be pretty mad if I bought “homeopathic gasoline” where someone puts a drop of gasoline into a million gallons of water then sells it to me as gasoline.
Homeopathy refers, specifically, to substances diluted down so much there's basically none of the original substance left in the resulting dilution. It's based on the premise that water has "memory."
I think you're getting homeopathy confused with "CAM," which stands for "complementary and alternate medicine." You might consider Zinc CAM (I haven't read the literature on it).
It is the case that something advertised as a "medicine" can include both homeopathic ingredients and other CAM ingredients as well.
My friend bought some once and when I pointed out that it said "homeopatic" in very, very tiny text he was super upset that he'd been duped.
Is that the case in the US? Because here in Germany, lower potencies are very common.
EDIT: Thanks for the info on St John's Wort! I should have picked a better example.
https://scholar.google.com/scholar?q=St+John%27s+Wort+double...