Fi Supplements are our latest advancement in smart dog care. Carrying the National Animal Supplement Council (NASC) Quality Seal*, we're proud to offer targeted formulas informed by years of data and designed to support your dog’s health and wellness every day.
Check out more information on our supplement lineup below - including the Fi 8-in-1 Formula, Fi Calming, Fi Skin & Coat, and Fi Hip & Joint.
When you're ready to bring them home, Fi Supplements can be purchased as a single-bag order on our website or as an auto-shipment in the Fi App. For information on managing your shipping frequency, see Managing Your Supplements Subscription.
Fi 8-In-1 Formula
The Fi 8-in-1 Formula draws upon years of data to maintain your dog’s overall health and well-being. Packed with essential, targeted ingredients to support Skin Health, Digestive System, Bone & Joint, Muscle Growth, Brain Function, Exercise & Activity, Heart Health, and Kidney & Liver, Fi’s 8-in-1 Formula provides dogs of all breeds, ages and activity levels with the daily comprehensive support they need to thrive.
Fi Calming
Fi Calming uses a gentle, data-backed blend of calming ingredients to promote relaxation during everyday restless moments. Formulated with a balanced combination of CBD, Valerian Root, Magnesium, and L-theanine, Fi Calming helps dogs maintain composure during travel, separation anxiety, and other external stressors without leaving them overly-sedated.
Fi Skin & Coat
Fi Skin & Coat uses a targeted, data-backed blend of essential vitamins and nutrients to support vibrant, healthy fur for dogs of all breeds and ages. Packed with Omega-3 Fatty Acids from fish oil, Biotin, Zinc, Antioxidants, and other powerful supporters of skin cell health, a daily dose can go a long way in keeping your dog looking and feeling their best.
Fi Hip & Joint
Fi Hip & Joint helps keep dogs moving with a targeted, data-driven blend of powerhouse ingredients for mobility, flexibility, and connective tissue health. Loaded with Krill, Green-lipped Mussel, Glucosamine HCl, MSM, and more, Fi Hip & Joint provides dogs of all ages and activity levels with the daily support they need to be up for any adventure.
*NASC Quality seal applies to all except 8-in-1 formula.
Frequently Asked Questions
Can I give my dog this alongside other supplements and vitamins?
Every supplement in our lineup is carefully formulated to avoid known interactions with each other, supporting your dog’s health without compromise. While our products are designed with safety in mind, it’s always a good idea to check with your vet when combining supplements. They can help tailor the right approach for your dog’s unique needs.
Is this included in my collar membership or is it a separate bill?
Fi Supplements are billed independently of your monthly Fi Collar membership.
What are the ingredients of the Fi 8-In-1 Formula?
What are the ingredients of Fi Calming?
What are the ingredients of Fi Skin & Coat?
What are the ingredients of Fi Hip & Joint?
What if my dog has an adverse reaction to a supplement?
First, please discontinue using our product immediately and consult your veterinarian. The ingredient list is above if you need to provide this to your vet.
Your dog's health and safety are our top priorities at Fi. We take all adverse event reports seriously and thoroughly investigate them.
Please contact our Customer Success Team to share details about your order and dog so we can investigate the issue.