I mispoke. I purchased Tape Worm Tabs- marketed by Tradewinds. According to something I read online (not from the tradewinds site), there are only two manufacturers of tape worm tabs for cats: Bayer and Tradwinds. The key ingredient is praziquantel (pra-zee-kwan’-tell). According to this site:


Trade Winds
•Trade Winds tape worm tablets are available over the counter to pet owners. It is identical in every way to its prescription counterpart, including dosage, clinical indications, efficacy and administration instructions. The only difference between the two is that you do not need to obtain a prescription to buy Trade Winds brand tapeworm tablets.


We shall see!