Helene,
The monthly cost of Invokana (there is no generic available to me) depends on the dose and the weight of the equine. It's most economical to buy the 300 mg tablets and cut them with a pill cutter. Ninety 300 mg tablets costs about $280 with shipping to the USA.

Just as an example, if Rosie's weight is 600 lb≈272 kg, and if her dose is 0.6 mg/kg, then her dose would be 163 mg or half a 300 mg tablet. For $280, you would get 180 day supply for about $1.56/day. If she were on a lower dose, your cost would be proportionately less.

https://www.pricepropharmacy.com/product/invokana/

To find other pharmacies, check https://www.pharmacychecker.com 
--
Cass, Sonoma Co., CA 2012
ECIR Group Moderator
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