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Q: Ivermectin & Snakes?
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Jah [PR48-OB]

I was given some Ivermectin recently to deworm one of my snakes, but upon looking it up I read that it is dangerous to use with reptiles. Anyone have experience with using Ivermectin in reptiles, or have more knowledge with this? Thanks guys!

Points: 50
Topics: General Health , Parasites , Medications
Tags: Ball, Deworming, Ivermectin, Parasites, Python, Regius
Species: Pythons > Pythons > Python regius
Administrative: Show/Hide

Member Comment 3/17/2011 10:04:39 PM


from what i have found ivermectin can effect the kidneys and liver in most reptiles ... but if used in low doses there hasnt been anything so far that i have found ..

you can use ivermectin in a spray bottle as well

i would say use pancur its  a lot safer

Accepted Answer 3/18/2011 1:56:31 AM


I agree with using panacur over Ivermectin but be very aware of the dosing. I think it also depends on the type of reptile and that there are some more suceptible to bad reactions to Ivermectin. There are sevral good web sites... http://www.anapsid.org/resources/rxdose.html 


hopefully one of them will help

Member Comment 3/18/2011 1:56:39 AM


I've only ever used it externally, on mammals.  Did a vet give it to you?  I've heard negative things about it with reptiles as well, although only in regards to tortoises - it can cause liver issues in them.  Presumably that would apply to other reptiles as well.

I prefer a combination of flagyl/panacur if I'm going to worm, and anything more serious than that I'd leave to a vet to treat as they'll be considerably more familiar with the risks of the wormer vs the risks of leaving the worms alone.  If it takes a risky wormer that could damage the organs to get rid of parasites that the animal can survive with if cared for properly, why remove them?

Author Comment 3/18/2011 2:48:14 AM


I actually got the Ivermectin from the vet - but since I didn't talk to him personally, I didn't get to tell him that I wanted Panacur. Instead the vet tech just brought out an envelope with the syringe in it (it is an injection, not oral) and I figured it was a-okay. Sucks, because it is an hour drive, and I was charged $20 for one injection. If I would've been able to talk to him one-on-one this wouldn't have happened. but I didn't have an official appointment so he was busy with another client. 

I'm not going to risk it. I hate to waste it because it cost $20, but that isn't worth hurting the snake.

Shellboa - That first link is actually the site I read that made me want to ask all of you guys. It looks like they say it should not be used for any reptiles. Further down it looks like it is pretty easy to buy Panacur for horses & just use a small amount (they have the dose listed there) for snakes. Has anyone done this??

Assisted Answer 3/18/2011 8:36:30 AM


My vet in Jax FL, Dr Rossi, has used ivermectin depending on case by case reptile. He has even given as mix with water to use as a spray for mites in the past. He is a reptile specialist vet too, and written at least 2 books that I know of, Whats Wrong with my Snake? and Whats Wrong with my Iguana?  He has info in the books about common illnesses and meds used, as well as a general chart for dosing per weight/species of reptile.

Member Comment 3/18/2011 10:51:00 AM


I have used the horse panacur and that is exactly why I said to be very cautious with the dose. I had a ball python die from using to much, it ate up his liver. The vet said it was very rare and he had never seen it before BUT...He also offered to tell me dosage if I gave him weights. He knows how many critters I have to treat. Thankfully I haven't had a parasite issue in a long, long time.

Author Comment 3/18/2011 10:53:36 AM


Do you know if the dosage listed on anapsid's site is correct? This snake weighs 1725 grams as of the other day... So I know her exact weight and can weigh her before dosage as well. Anapsid's formula was gm weight x .00025 = cc dosage. 

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