McTarnahans Iodide Powder Horse Supplement, 4-lb bucket
By McTarnahans
$16.77 First Time Autoship Price
this orderSave 40% (up to $40) today when you set up Autoship.Â
$27.95 Autoship Price
future orders
Get deliveries on your schedule
Skip, change, or cancel anytime
$27.95 Chewy Price
($0.44 /serving)
Save $5.45 (-16%)
$33.40 List Price
Tooltip Available
Promo, New Customers Only: Spend $49+, Get $20 eGift Card + Free Shipping with code: WELCOME
In Stock
FREE 1-3 day delivery on first-time orders over $35
Free 365-day returns
Tooltip Available
Frequently bought together
- DealCorta-Flx Equine Joint Horse Supplement, 12-lb bucket$152.15 Chewy Price$199.99 List Price$144.54 Autoship PricePromo, New Customers Only: Spend $49+, Get $20 eGift Card +1 deal
- Deal
- DealMcTarnahans Haarlem Oil Recovery Paste Horse Supplement, 10-mL syringe$5.99 Chewy Price$7.94 List PricePromo, New Customers Only: Spend $49+, Get $20 eGift Card +1 deal
- Fluvac Innovator 5 Vaccine for Horses, 1mL Syringe$32.92 Chewy Price$31.27 Autoship PricePromo, Save 20% On First Rx Order With Code: RX20 +2 deals
- DealAniMed Di-Cal Powder Horse Supplement, 4-lb tub$9.99 Chewy Price$31.95 List Price$9.49 Autoship PricePromo, New Customers Only: Spend $49+, Get $20 eGift Card +1 deal
- DealE3 Thrush Clear with Brush Horse, 8-oz bottle$10.19 Chewy Price$13.35 List PricePromo, New Customers Only: Spend $49+, Get $20 eGift Card
- DealE3 Tea Tree Horse Shampoo, 32-fl oz bottle$11.99 Chewy Price$19.99 List PricePromo, New Customers Only: Spend $49+, Get $20 eGift Card
- DealProElite GutBiome Gut Microbiome & Immunity Support Horse Supplement, 3-lb tub$32.99 Chewy Price$49.99 List Price$31.34 Autoship PricePromo, New Customers Only: Spend $49+, Get $20 eGift Card +1 deal
- Farnam Horseshoer's Secret Horse Hoof Care Hoof Conditioner, 32-oz bottle$24.99 Chewy Price$30.49 List Price$23.74 Autoship PricePromo, New Customers Only: Spend $49+, Get $20 eGift Card
3 Customer Questions
How many grams of the active ingredient are in a single serving?
Answer by • Mar 30, 2022
There is 7.95 milligrams per 30 grams of the active ingredient in each serving.
Can humans consume this as a iodine supplement?
Answer by • Mar 20, 2021
This supplement is not for human use, as it is for equine use only.
How many oz are in the scoop?
Answer by • Jul 24, 2025
The scoop is one ounce, which is also the recommended serving size.











