We've always used Sentinel. Our vet lets us order from the online pharmacy they use, VetCentric, and we get it at a little bit lower price than if we'd bought it in the office.
In one year's time the price of Sentinel has gone from about $90 to $145 for 12 pills.
Why would there be such a big price increase in an established product?
When I looked at PetsMegastore in Australia, they don't carry Sentinel but suggest Multiguard that has the same ingredients.
For US folks, are you comfortable ordering from out-of-country?
Did you need to submit a prescription from your vet?
Are you satisfied with the quality of the product?
How long was the shipping time?
If any of you have a therapy dog, did lack of a US-based product cause any TD registration problems so long as your dog got the required annual vet checks?
MultiGuard from Petsmegastore