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  1. #1
    Join Date
    Nov. 19, 2004
    Posts
    361

    Default Legs are swollen, reaction to SMZ's??

    Picked up a TB off the track in October, wormed her 12/1 with Quest Plus and has been turned out. She cut her hind leg, which got infected. On Friday I cleaned it up, triple antibiotic wrap and started her on SMZ's. The wound was looking good, but on Monday night she came in with a small amount of swelling in her left front ankle & pastern, but sound. On Tuesday she had a little more swelling and seemed slightly off. She did not go out to graze over night with the other horses, but stayed in the run-in with hay.

    Wednesday night she had swelling in both front legs from just below the knee down. Her temp, eating habits and poop were all normal, but again did not go out with the others.

    This morning there is swelling in all 4 legs. Again temp, eating and poop normal, but not going out with the other horses. She cleaned up all the hay left for her. I stopped the SMZ's and gave her 2 grams of bute.

    Has anyone ever had a horse react to SMZ's? I was giving 10 twice a day for a 1,000 horse. I used a weight tape for my estimate.

    Any thoughts?



  2. #2
    Join Date
    Mar. 4, 2007
    Location
    Western Washington
    Posts
    2,991

    Default

    Only the obvious one - a vet should actually see this and figure it out.



  3. #3
    Join Date
    Jan. 16, 2002
    Location
    West Coast of Michigan
    Posts
    36,321

    Default

    Red flag for me, simply because my Bonnie had a HORRIBLE reaction to what we're forced to assume was sulfa antibiotics as a weanling. She swelled up dramatically, all her joints were swollen, she was covered with hives which then scabbed up and half her skin fell off, leaving her nearly hairless! (this was January, too) Her urine was dark and she was one sick filly. Skin and bones, poor critter. She recovered beautifully but it was pretty darn scary and I'll never give her sulfa drugs again.

    Obviously there are lots of other things it could be, but I'd for sure be super vigilant and be calling the vet.
    Click here before you buy.



  4. #4
    Join Date
    Nov. 19, 2004
    Posts
    361

    Default

    I know people have allergies to sulfa drugs and as SMZ's are a off label use for horses, I could find no information on side effects.

    I have a call into my vet.

    Thanks! I feel pretty confident that it is an allergy to the SMZ's and was hoping (not at another horses expense) that someone else had a reaction too.

    She did out up the hill into the pasture this afternoon.



  5. #5
    Join Date
    Aug. 16, 2008
    Posts
    457

    Default

    I'm allergic to SMZs. I was given them more for infection prevention at a surgery site and after 5 days developed a rash and then a fever.

    swollen limbs can be from compromised circulation or kidney problems. Def. call the vet.



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