Recommendations for purchasing heartworm meds online?

Looking for website recommendations for purchasing heartworm meds. I use Sentinel on my 3 dogs and trying to find a more cost effective supply. I tried petcarechoice but the shipping time has gone beyond 30 days. Thanks!

Depending where you are located you have to have an Rx to order online from anywhere reputable. Do you have one?

Yes, from my vet.

When you do order, make sure to check the expiration date on the products you receive.

Also, some vets will price match if you ask them (mine does!)

If your dog is not a collie or collie mix you might try this:

Canine Heartworms and Inexpensive Prevention | Beagle Pictures, Information & Forum | Beagles Unlimited

any sentinel purchased from online pharmacies is considered "grey market" as the manufacturer does not sell to online pharmacies and will not guarantee the product.

We use kvvet.com - Iverheart, but they have Sentinel (real sentinel) as well.

Just don't use 1-800-Pet-Meds. They often send products labeled for use in other countries (hence the kilograms on the packaging) instead of those made for use in the US (and subject to OUR regulations!). And no heartworm preventative manufacturer will guarantee a product through them as they do if you buy the stuff from a reputable pharmacy.