Injectable Ivermectin

Donna Powell

Dr. Kellon,

Based on this Abstract:  Efficacy of ivermectin against Onchocerca cervicalis microfilarial dermatitis in horses.


I was considering trying this on one of my itchy drafts but would like to hear from you before going forward with this.  If you consider this ok for him, what liquid ivermectin do I use?
Thank you,
Donna ECIR2011 NRCPlus0213 NAT0413
Beaufort, SC

Eleanor Kellon, VMD

Injections of ivermectin are not recommended in horses because of instances of abscess with Clostridial infection and massive tissue destruction or death.  It's not common but has always been enough to stop me from doing it.

Oral ivermectin is very well absorbed.  It also has a wide safety margin so you can ramp up the dose if unsure of the horse's weight.  If symptoms return, consider getting skin scrapings to make sure the larvae are back.  Biting insects could actually be the problem.

Eleanor in PA
EC Co-owner
Feb 2001