Tape Worm - Praziquantel

I have purchased this tapeworm medicine at my local Petsmart.
Has anyone used this product before?
The bottle contains 3 pills and it says the dosage is 1 1/2 pills for cats over 11lbs.
However, it does not say if I should be giving a one time dosage or the other 1 1/2 pill the next day or in a week? Im confused!!!
Any advice from someone who has experience with this is greatly appreciated.
Thanks.

It's a one time dosage, but you can give a second dose after 14 days just to make sure.

My Alley got just one pill for her tapeworm on her first vet visit.It was hard on here but after 2 days she was back to normal.Not sure if it is the same active ingredient as an otc med but she looks MUCH better now and has a shiney coat. Good luck! The worm meds are hard on them(poison);Alley vomitted once and was just not normal for a few days i.e. not eating right.