--- title: "Biotin for Dogs and Cats | Petz Park" description: "Biotin (Vitamin B7) — active ingredient in Petz Park supplements. Biotin (Vitamin B7) in Petz Park supplements. Learn about the mechanism, evidence, and safety." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://knowledge.petzpark.com.au" }, { "@type": "ListItem", "position": 2, "name": "Ingredients", "item": "https://knowledge.petzpark.com.au/ingredients" }, { "@type": "ListItem", "position": 3, "name": "Biotin (Vitamin B7)", "item": "https://knowledge.petzpark.com.au/ingredients/biotin" } ] }, { "@context": "https://schema.org", "@type": "MedicalWebPage", "name": "Biotin (Vitamin B7)", "description": "Biotin for Dogs and Cats | Petz Park", "url": "https://knowledge.petzpark.com.au/ingredients/biotin", "about": { "@type": "Substance", "name": "Biotin (Vitamin B7)" }, "publisher": { "@type": "Organization", "name": "Petz Park", "url": "https://petzpark.com.au" } }, { "@context": "https://schema.org", "@type": "ItemList", "name": "Products containing Biotin (Vitamin B7)", "itemListElement": [ { "@type": "ListItem", "position": 1, "url": "https://knowledge.petzpark.com.au/dogs/products/skin-coat-for-dogs", "name": "Skin and Coat for Dogs" }, { "@type": "ListItem", "position": 2, "url": "https://knowledge.petzpark.com.au/cats/products/skin-coat-for-cats", "name": "Skin and Coat for Cats" } ] } ] --- [![Petz Park logo](/images/petz-park-logo.png)](https://www.petzpark.com.au/?utm_source=knowledgecentre&utm_medium=ingredient_article&utm_campaign=biotin&utm_content=navigation) [Home](/) [Dogs](/dogs) [Cats](/cats) [Products](/products)[Ingredients](/ingredients)[Comparisons](/comparisons)[FAQs](/faqs)[Trust & Proof](/trust) About [Visit Store](https://petzpark.com.au/?utm_source=knowledgecentre&utm_medium=ingredient_article&utm_campaign=biotin&utm_content=header_cta) 1. [Home](/) 3. [Ingredients](/ingredients) 5. Biotin (Vitamin B7) # Biotin (Vitamin B7) Biotin is a water-soluble B vitamin that serves as an essential cofactor for carboxylase enzymes involved in fatty acid synthesis, amino acid metabolism and energy production. Its role in coat and skin health is well established: it is required for the production of the structural fatty acids that form both the skin's lipid barrier and the protein composition of the hair shaft and nail plate. ## Mechanism of Action Biotin's role in coat and skin health operates through acetyl-CoA carboxylase, the rate-limiting enzyme in de novo fatty acid synthesis. Without adequate biotin, this enzyme cannot function, reducing the availability of the long-chain fatty acids that are incorporated into keratin structures and the skin lipid barrier. The result in deficient animals is a brittle coat, flaky skin and weak or brittle nails. Supplemental biotin corrects deficiency and supports normal fatty acid synthesis. In animals receiving adequate dietary biotin, supplementation produces modest additional benefit. The animals most likely to respond visibly are those with poor coat quality or brittle nails suggesting underlying insufficiency. Biotin acts as a cofactor for carboxylase enzymes, so its effect on coat quality is indirect: it enables the fatty acid synthesis that supplies the lipids of the hair shaft and the skin barrier. Because hair grows in cycles, any visible change follows the growth of new hair rather than an improvement in existing hair, which is why coat responses are assessed over months rather than weeks. ## Evidence Summary Biotin's essential role in fatty acid synthesis is established biochemistry. The most directly applicable veterinary research comes from equine medicine, where Frigg et al (1989, Veterinary Record) demonstrated significant improvement in hoof quality and horn structure with supplemental biotin in horses with poor hoof condition. In dogs and cats the evidence is less extensive but biotin deficiency produces dermatological changes that resolve with supplementation, confirming the role. At supplemental doses in animals with adequate status the benefit may be modest but the intervention is safe and inexpensive. Frank biotin deficiency is uncommon in pets fed a complete diet, since intestinal bacteria contribute to biotin supply. Deficiency becomes plausible where that supply is disrupted, for example with prolonged antibiotic use or a diet high in raw egg white, which contains avidin and binds biotin. In skin and coat formulas biotin is included as part of a broader nutrient package alongside zinc and essential fatty acids rather than as a standalone treatment for itching. ## In Petz Park Products Skin and Coat for Dogs: Biotin 20mcg per scoop. Skin and Coat for Cats: Biotin 5mcg per scoop. Skin and coat support works best alongside the basics: parasite control, an appropriate diet and veterinary investigation of allergy where scratching is persistent. Supplementation supports coat condition, it does not resolve an underlying allergic or infectious cause. ## Safety and Considerations Biotin is safe at any supplemental dose. It is water-soluble and any excess is excreted in urine. No toxicity has been documented. No drug interactions are established at supplemental doses. It is one of the safest vitamins in use. Biotin is water soluble and excess intake is excreted rather than stored, and no toxic upper limit has been established for dogs or cats at supplemental doses. Very high biotin intake can interfere with some laboratory assays, including certain thyroid and cardiac tests, so mention any supplement your pet is taking before bloodwork. ## Used in These Products Dog Products - [Skin and Coat for Dogs](/dogs/products/skin-coat-for-dogs) Cat Products - [Skin and Coat for Cats](/cats/products/skin-coat-for-cats) ## Helps With These Concerns Dog Health - [Skin, Coat and Allergies in Dogs](/dogs/skin-coat-allergies) Cat Health - [Skin, Coat and Allergies in Cats](/cats/skin-coat-allergies) [Back to Ingredients](/ingredients) Explore the Knowledge Centre - [All Ingredients](/ingredients) - [Dog Supplements](/dogs) - [Cat Supplements](/cats) - [Knowledge Centre Home](/) ![Petz Park](/images/petz-park-logo.png) Australian-made pet supplements for dogs and cats. ### Explore - [Home](/) - [Dogs](/dogs) - [Cats](/cats) - [Products](/products) - [Ingredients](/ingredients) - [Comparisons](/comparisons) - [FAQs](/faqs) - [About](/about) - [Trust & Proof](/trust) ### Dog Health - [Joint Health for Dogs](/dogs/joint-health) - [General Health and Vitality for Dogs](/dogs/general-health-vitality) - [Urinary and Kidney Health in Dogs](/dogs/urinary-kidney-health) - [Probiotics for Dogs](/dogs/probiotics) - [Liver Health for Dogs](/dogs/liver-health) - [Skin, Coat and Allergies in Dogs](/dogs/skin-coat-allergies) - [Brain and Cognitive Health in Dogs](/dogs/brain-cognitive-health) - [Anxiety and Stress in Dogs](/dogs/anxiety) - [Eye Health for Dogs](/dogs/eye-health) - [Dental Health for Dogs](/dogs/dental-health) - [Senior Dog Health](/dogs/senior-dog-health) - [Immune and Seasonal Health for Dogs](/dogs/immune-seasonal-health) ### Cat Health - [Joint Health for Cats](/cats/joint-health) - [Anxiety and Stress in Cats](/cats/anxiety) - [Dental Health for Cats](/cats/dental-health) - [Liver Health for Cats](/cats/liver-health) - [Skin, Coat and Allergies in Cats](/cats/skin-coat-allergies) - [General Health and Vitality for Cats](/cats/general-health-vitality) - [Urinary and Kidney Health in Cats](/cats/urinary-kidney-health) - [Eye Health for Cats](/cats/eye-health) - [Probiotics for Cats](/cats/probiotics) ### Contact - [petzpark.com.au](https://petzpark.com.au/?utm_source=knowledgecentre&utm_medium=ingredient_article&utm_campaign=biotin&utm_content=navigation) [Instagram](https://www.instagram.com/petzpark "Instagram")[Facebook](https://www.facebook.com/petzpark "Facebook")[TikTok](https://www.tiktok.com/@petzpark "TikTok") © 2026 Petz Park. 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