Not every pet will swallow a capsule without a struggle. For cats — notoriously resistant to any form of pilling — and for smaller dogs or pets with sensitive digestive systems, the standard gelcap format simply isn't practical. Animal Necessity developed Ocu-GLO PB (Powder Blend) specifically to solve this problem: the same 12-antioxidant ocular formula, reformulated into an easy-open capsule whose contents can be sprinkled directly over food at mealtime. It's a meaningful difference in daily compliance, and consistent daily dosing is essential for any supplementation program to deliver results.
Ocu-GLO PB is designed for small dogs, cats, and any pet that resists swallowing pills. It is the only Ocu-GLO formulation fully approved for use in mature cats (6 months or older, weighing 5 lbs or more, without a history of liver disease). The powder format is also gentler on sensitive stomachs, as the gradual release when mixed with food reduces the chance of gastrointestinal upset compared to a liquid gelcap delivered on an empty stomach.
The formula features the proprietary GLO blend — FloraGLO® Lutein, Grape Seed Extract, and Omega-3 fatty acids (EPA/DHA) — as its antioxidant foundation. Lutein is a carotenoid that accumulates specifically in the retina and lens, providing continuous protection against UV-induced oxidative damage. Grape Seed Extract delivers proanthocyanidins that inhibit reactive oxygen species at the cellular level in the lens epithelium. EPA and DHA from the Omega-3 component support retinal membrane integrity and vascular circulation within the eye.
These three core ingredients are backed by Astaxanthin, Rutin, Green Tea Extract (40% EGCG), Coenzyme Q10, Alpha Lipoic Acid, Vitamins C and E, Zinc, and the full B-vitamin complex (B1, B3, B5, B6, B7, B9, B12) — 12 antioxidants total, working synergistically across multiple metabolic pathways to provide comprehensive ocular protection for both dogs and cats.
The formula is NASC-quality-seal certified, made in the USA, soy-free, and formulated by board-certified veterinary ophthalmologists with research grounded in the Age-Related Eye Disease Studies (AREDS). Each 30-capsule bottle supports a 15–30 day supply depending on the pet's weight.
Key Ingredients
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GLO Proprietary Blend – 175 mg (Grape Seed Extract, FloraGLO® Lutein, Omega-3 EPA/DHA) — core antioxidant triad for cornea, lens, and retinal protection
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Vitamin C (Ascorbic Acid) – 50 mg — water-soluble antioxidant and collagen co-factor for ocular tissue integrity
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Green Tea Extract (40% EGCG) – 20 mg — polyphenol antioxidant with anti-inflammatory action in ocular tissues
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Vitamin E – 25 IU — fat-soluble antioxidant protecting photoreceptor cell membranes
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Alpha Lipoic Acid – 13 mg — regenerates vitamins C and E within the antioxidant cycle
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Coenzyme Q10 – 13 mg — mitochondrial antioxidant essential for high-energy demand tissues like the retina
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Rutin – 5 mg — bioflavonoid supporting capillary integrity and reducing vascular permeability in the eye
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Zinc (Zinc Oxide) – 3 mg — cofactor for superoxide dismutase, the eye's primary enzymatic antioxidant defence
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Astaxanthin – 1 mg — crosses the blood-retinal barrier; among the most potent carotenoid antioxidants known
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B-Vitamin Complex (B1, B3, B5, B6, B7, B9, B12) — supports nerve signal transmission and cellular metabolism throughout the visual pathway
Directions for Use
| Pet Weight |
Daily Dose |
| Cats 5–10 lbs |
½ capsule daily |
| Cats 11–20 lbs |
1 capsule daily |
| Dogs 1–10 lbs |
1 capsule daily |
| Dogs 11–30 lbs |
2 capsules daily |
Open the capsule and sprinkle contents over food at mealtime. If multiple capsules are required, divide doses across meals. Do not use in cats with a history of liver disease. Do not use in animals under 6 months of age or cats under 5 lbs. Do not use alongside anticoagulant medications. Safe for perioperative use.
Supplement Advisor's Note
The PB formulation solves the single biggest compliance problem with eye supplements in cats: the inability to pill them reliably. Because consistent daily dosing is critical for antioxidant levels to accumulate in ocular tissues, the powder-sprinkle format genuinely improves outcomes compared to a gelcap that gets spat out. One caution worth noting for cat owners: do not use in cats with liver disease, as Alpha Lipoic Acid — while beneficial for dogs — can be hepatotoxic in cats at higher doses. This formulation uses a cat-appropriate dose, but the caution remains important for any cat with pre-existing liver conditions. For cats with a known liver history, confirm with your veterinarian before starting.
Frequently Asked Questions
Is this safe for my cat?
Yes — Ocu-GLO PB is the only Ocu-GLO formulation specifically approved for cats. It is safe for mature cats (6 months+) weighing 5 lbs or more, with one important exception: do not use in cats with a history of liver disease. The Alpha Lipoic Acid content, while dosed safely for healthy cats, is contraindicated in cats with compromised liver function.
How does the powder blend differ from the regular gelcap?
The PB capsule is opened and the powder is sprinkled over food, making it ideal for cats and small dogs that resist swallowing pills. The antioxidant formula is the same as the original Ocu-GLO gelcaps, though the PB is available in the small/medium dog and cat dose size. The PB XL version (Ocu-GLO PB XL) is sized for medium and large dogs over 30 lbs.
How long does one bottle last?
For a 5–10 lb cat (half capsule daily), a 30-count bottle lasts 60 days. For a small dog (10 lbs, 1 capsule daily), it lasts 30 days. For dogs 11–30 lbs (2 capsules daily), it lasts 15 days. Choose bottle size accordingly for cost efficiency.
Can I use this alongside other supplements or medications?
Ocu-GLO PB is formulated to complement standard veterinary therapy and can generally be used alongside other supplements. The key caution is anticoagulant medications — Grape Seed Extract has mild antiplatelet properties. Always inform your veterinarian of all supplements your pet is receiving.
Will my picky cat actually eat this?
The powder is described as palatable and formulated to blend easily into wet or dry food. Most cats accept it when mixed into a small amount of their regular food. If your cat initially refuses, try mixing a smaller amount first and gradually increasing to the full dose over a few days.
