--- product_id: 373975628 title: "Cox Vet Labs Acti-Flex Equine Supplement 1 Gallon" brand: "cox veterinary" price: "$358.60" currency: USD in_stock: true reviews_count: 5 category: "Cox Veterinary" url: https://www.desertcart.us/products/373975628-cox-vet-labs-acti-flex-equine-supplement-1-gallon store_origin: US region: United States of America --- # 128-day supply per gallon Liquid fast-absorbing formula 8,000 mg Glucosamine per oz Cox Vet Labs Acti-Flex Equine Supplement 1 Gallon **Brand:** cox veterinary **Price:** $358.60 **Availability:** ✅ In Stock ## Summary > 🐎 Ride Stronger, Last Longer – The Ultimate Equine Joint Elixir ## Quick Answers - **What is this?** Cox Vet Labs Acti-Flex Equine Supplement 1 Gallon by cox veterinary - **How much does it cost?** $358.60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/373975628-cox-vet-labs-acti-flex-equine-supplement-1-gallon) ## Best For - cox veterinary enthusiasts ## Why This Product - Trusted cox veterinary brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Long-Lasting Supply:** Generous 1-gallon size delivers up to 128 days of consistent joint support. - • **Inflammation Defense:** Boswellia Serrata herb reduces inflammation for peak equine performance. - • **Synovial Fluid Boost:** Hyaluronic Acid enhances joint lubrication and supports long-term mobility. - • **Advanced Joint Repair:** Powerful blend of Glucosamine, Chondroitin & MSM accelerates natural joint healing. - • **Optimized Bioavailability:** Ester C (Vitamin C) maximizes ingredient absorption and antioxidant protection. ## Overview Cox Vet Labs Acti-Flex 4000 is a premium liquid equine supplement formulated with clinically effective doses of Glucosamine (8,000 mg/oz), Chondroitin, MSM, and Hyaluronic Acid to support joint repair, reduce inflammation, and enhance synovial fluid production. Designed for daily use, its 1-gallon size offers up to 128 days of supply, ensuring sustained performance and mobility for your horse. ## Description ActiFlex 4000 has an advanced, fastacting, liquid formula of Glucosamine, Chondroitin, MSM, and Superoxide Dismutase. These ingredients occur naturally in the body, serving the function of repairing joints and many other tissues. In ActiFlex 4000 they, and other key ingredients work together to improve performance by increasing the horse's supply of jointlubricating synovial fluid, which repairs and strengthens stressed body parts.MSM adds a powerful ability to improve sulfur bonds, which are an essential component of all connective tissue. Ascorbic Acid (Vitamin C) is a key to optimizing bio availability of the other ingredients, as well as being an essential antioxidant. Boswellia Serrata is an herb that is proven to reduce inflammation. Hyaluronic Acid (HA) plays a critical role in maintaining healthy joint synovial fluid and preventing the deterioration of aging, over worked joints. HA has a high daily turnover so large amounts are needed to maintain proper levels within the joints. HA is also shown to influence cell movement, blood vessel formation, critically involved in healthy wound healing and serves as an antioxidant. By supplementing what a horse produces for itself, ActiFlex 4000 speeds the body's selfrepairing processes. Guaranteed Analysis Per oz. Glucosamine Sulfate 8,000 milligram. Chondroitin Sulfate 4,000 milligram. MSM 3,000 milligram. Ester C (Ascorbic Acid) 1,000 milligram. Yucca 150 milligram. Hyaluronic Acid (HA) 125 milligram. Feed 2 ounces per day for the first 5 to 17 days then reduce to a maintenance dose of 1 ounce per day. Mix into regular feed or administer via a dosing syringe. The gallon size provides up to a 128 day supply for one horse. For Horses only. No longer contains Type II Collagen Review: Acti flex works! Review: Awesome stuff! ## Features - manufacturer: Generic - Item Trademark: GENERIC - Item Weight: pounds, pounds, 8.60, 8.60 - Item Category: Sporting Goods ## Technical Specifications | Specification | Value | |---------------|-------| | Size | 1 Pack - 1 Gal. | | Style | Compact | | Team | cox veterinary | | Number of Items | 1 | | Batteries Included? | No | | Brand | COX VETERINARY | | Manufacturer | COX VETERINARY | | Item model number | ACTIFLEX 4000 GAL | | Product Dimensions | 30.48 x 15.24 x 15.24 cm; 3.9 kg | | ASIN | B009DNNOAS | ## Images ![Cox Vet Labs Acti-Flex Equine Supplement 1 Gallon - Image 1](https://m.media-amazon.com/images/I/61IUP8wDlAL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Acti flex works! *by A***R on 22 January 2026* ### ⭐⭐⭐⭐⭐ Awesome stuff! *by A***E on 17 February 2017* ### ⭐⭐⭐⭐⭐ it works *by J***T on 4 February 2026* ## Frequently Bought Together - Cox Veterinary Acti Flex Joint Compound, Gallon (128 oz) - Horse Health Joint Combo Hoof & Coat, Glucosamin, Chrondroitin, Vitamin C, MSM, Biotin, Lysine, ZInc, Omega 3 and 6 Fatty Acids, 64 day supply --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/373975628-cox-vet-labs-acti-flex-equine-supplement-1-gallon](https://www.desertcart.us/products/373975628-cox-vet-labs-acti-flex-equine-supplement-1-gallon) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-21*