Free delivery on all items. Please contact us for pricing and all of your API sourcing needs! Click here to download the API List PDF.

We stock many of the more common API’s that are used in the equine and small animal industries. Click to download the API’s for Veterinary Use PDF.

Willow Birch Pharma is proud to offer our new line of Injectable / Ophthalmic Grade API's. * These API's have been tested for bacterial endotoxins and/or microbial limits.

Willow Birch Pharma is proud to offer our Short Dated Items/Monthly Specials. Contact us for pricing and all of your API sourcing needs! Click to download the API’s List PDF.

Willow Birch Pharma also is a great source for many injectable products, topical creams, ointments, and solutions, plus much more. With this product mix, Willow Birch is able to supply almost anything your business could ever need