Date published: 2025-9-7

1-800-457-3801

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Thyro-L®

by LLOYD, Inc.
4.9(16)
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For correcting hypothyroidism in horses
    • Levothyroxine sodium powder
    • For correction of conditions associated with low circulating thyroid hormone
    • Administer orally to horses
Catalog #DescriptionPriceQtyAutoshipCARTFAVORITES
sc-363085Rx
1 lb
$25.43
sc-363086Rx
10 lb
$194.97
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Thyro-L® is used for correction of conditions associated with hypothyroidism in horses. Thyro-L® contains levothyroxine sodium. Each level teaspoon of powder contains approximately 12 mg of levothyroxine sodium, USP. Administer orally once per day, or in divided doses.

Supplied as either a 1 lb or 10 lb bucket.
A veterinarian's prescription is required for purchase.

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Can it have side effects?

Asked by: charlieb
When given as directed, no side effects are expected. If you do notice unusual symptoms, consult a veterinarian.
Answered by: SCAH
Date published: 2024-09-24
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Rated 5 out of 5 by from Saved my mare!My veterinarian of 20 years recommenced it to treat laminitis in my non-overweight, insulin reisitant mare. She had no flare-ups for several years, until we moved to a new state. The veterinarinas here were resistant to renewing our Thyro-L prescription. They didn't believe it treated insulin resistance in non-overweight horses, but my mare kept having laminitic flare-ups, so I pressed the issue and they finally gave in. My mare's laminitis is under control again, and I plan to keep her on Thyro-L for the rest of her life.
Date published: 2018-12-19
Rated 5 out of 5 by from My IR mare does great on this porduct!I started using Thyro-L just over a month ago, at a rate of 24 mg per day. Within a couple of days, my 22 y/o Arab mare who suffers from chronic laminitis and IR issues was acting like her self again: very energetic, happy, and wanting to please. I mistakenly ran out, and within a couple of days of being without this, she started getting more quiet and slow, acting like she doesn't feel as good. I don't want this to happen again, so I am going to start ordering from this site to make sure I get it on time!
Date published: 2017-11-28
Rated 5 out of 5 by from Thyro-L PowderMy vet prescribed this for my Paso Fino who is insulin resistant and has foundered because of it. This product is for hypothyroidism but for IR horses is somehow evens out the glucose so there are not big spikes and also helps to regulate weight so they do not get fat. He is doing well and I believe this product really helped him.
Date published: 2017-05-22
Rated 5 out of 5 by from Ideal size for multiple horsesI used to buy the 1 lb. size like 3 at a time. This is so much more logical as I don't have to keep checking in the cabinet to see how many I have left. I can relax for a couple months knowing I have a good supply. Greatest thing also is the 10 lb. size is a money saver versus multi 1 lb. sizes. Thank you again Santa Cruz !
Date published: 2022-04-26
Rated 4 out of 5 by from Really helpedI added this to my PPID mare to help with her ridiculous appetite! It was so bad, she would rip my arms out walking from her stall to turnout, just after eating breakfast, to grab a twig on the ground. Now she at least is a little more selective and doesn't dislocate my shoulders every day!
Date published: 2018-10-14
Rated 5 out of 5 by from Great products!SCA has so many great products. Their shampoo is amazing! The staff is absolutely the best! I do a lot of business with them and have yet to be disappointed. I'm very grateful they are close by and the pharmacy is so helpful and convenient!
Date published: 2016-12-08
Rated 5 out of 5 by from Another great item from Santa Cruz!I am so thrilled with the Thyro-L from Santa Cruz with the price and size available. I always receive all prescriptions overnight. Just their way to let us know how important their customers are to them !
Date published: 2017-12-08
Rated 5 out of 5 by from D.S.My mare was originally diagnosed as borderline cushings but also showed borderline thyroid issues. Vet put her on Thyro-L and she has responded very well - hair and sweating issues completely resolved..
Date published: 2016-12-03
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Thyro-L is rated 4.9 out of 5 by 16.
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