Official website · Authorized U.S. shop for Mighty K9
Mighty K9 is a bacon-flavored liquid for dogs, made to support joint comfort as they get older. Every 2 mL serving pairs organic olive oil and 1.6 mg of ESS60 (C60). Drizzle it over one meal a day; a 60 mL bottle covers a month. It is not a veterinary drug, so check with your vet first. Every pack carries a 30-day money-back guarantee.
Written by the Mighty K9 editorial team · Updated
The product
Mighty K9 is a liquid supplement for dogs, not for people. Each amber dropper bottle holds 2 fl oz (60 mL) of organic extra virgin olive oil with ESS60, a trademarked form of the carbon molecule C60, plus bacon flavor.
The label lists only three ingredients: extra virgin olive oil, ESS60 and bacon flavor. One serving is 2 mL, and a bottle holds 30 servings. That makes one bottle a one-month supply when you give one serving a day.
The sales page pitches it for older dogs: comfortable movement, less stiffness, healthy joints and "cellular aging" support. Those are the brand's claims. This site sets each one next to what research actually shows, so you can decide with clear eyes. Start with the three ingredients or the full Guaranteed Analysis.
It is olive oil you add to your dog's food, with a very small dose of C60. It is not a drug, not a pain reliever and not a treatment for arthritis. The 30-day money-back guarantee covers empty bottles too.
Read the bottle
Tap the numbers. Each one explains a line on the front label, in plain words.
Black rubber bulb and glass dropper. The brand's serving calculator counts one full dropper as 1 mL.
Dark amber glass, a common choice for light-sensitive oils. Still keep it in a cupboard: light is the main threat to olive oil.
MIGHTY K9, Canine Supplements. Same wordmark as the Guaranteed Analysis panel.
A spaniel resting its chin. Decoration, not a claim.
The front says Organic Extra Virgin Olive Oil. The ingredient line says Extra Virgin Olive Oil and names no organic certifier.
Front-panel wording. The Guaranteed Analysis gives the amount: 1.6 mg ESS60 per 2 mL serving.
The taste ingredient. Its source is not listed.
2 fl oz (60 mL): 30 servings of 2 mL. The label prints NET WT, though fluid ounces measure volume.
The front panel calls the oil organic. The ingredient line on the Guaranteed Analysis does not name an organic certifier, so we report the word as the brand's claim. See testing and quality for what each badge does and does not prove.
Daily routine
Four steps, about ten seconds a day. Scroll to watch each one.
The label serving is 2 mL. The brand's calculator counts one full dropper as 1 mL, so that is two full droppers.
Squeeze the oil over your dog's regular food. Kibble, wet food or a splash of broth all work, per the sales page.
Stir so the oil coats the food. Pick one meal and keep it the same every day so you do not skip or double up.
Note stairs, rising and walks for 30 days. Decide before the 30-day guarantee window closes.
The label gives one serving a day, not two. Tying the drops to one meal, breakfast or dinner, means the bottle sits next to the food bin and the serving does not get skipped or doubled. The sales FAQ says the oil can go on kibble, wet food or broth, or be given straight. For pups under six months, the sales page says to check with your vet first.
Full steps, storage tips and what to do if your dog leaves oily kibble behind are on the how to use page.
Ingredients
Three ingredients, listed by weight. Hover or tap a card for the details.
On the label: Extra Virgin Olive Oil · Nearly all of the 2 mL (about 1.8 g)
Carries the ESS60 and supplies the calories
A food fat, not a joint treatmentPlant oil (the carrier and nearly all of the serving). About 16 kcal per 2 mL; mostly oleic acid, an omega-9 fat.
Watch forIt is pure fat. Dogs with a history of pancreatitis or on a low-fat diet need their vet's okay first.
Full profileOn the label: ESS60 · 1.6 mg per 2 mL serving (label)
Sold as an antioxidant for healthy aging
No dog studiesTrademarked C60 ingredient. Rodent studies only; no published dog studies found.
Watch forLight-exposed C60 oil turned toxic in a 2021 mouse study. Keep the bottle out of light.
Full profileOn the label: Bacon Flavor · Not listed
Helps picky dogs accept the oil on food
Not a health ingredientFlavoring for taste. A taste ingredient, not a nutrient.
Watch forThe label does not say what the flavor is made from. Ask the brand if your dog has a food allergy.
Full profileThe Guaranteed Analysis lists crude fat at a minimum of 100% and protein, fiber and moisture at zero. In other words, the liquid is oil. ESS60 is present at 1.6 mg per 2 mL serving, and the bacon flavor has no printed amount.
Olive oil is mostly oleic acid, an omega-9 fat (USDA, Olive oil). It is not the same as the EPA and DHA omega-3s from fish oil that have the strongest evidence for sore dog joints. Read the full profiles: olive oil, ESS60 and bacon flavor.
The label
The Guaranteed Analysis is the product's fact panel. Tap a number to decode each line.
MIGHTY K9, Canine Supplements: the brand wordmark. The label image names no manufacturer or facility.
A spaniel resting its chin on the panel. Artwork, not a promise of results.
Per 2 mL serving, 30 servings per container. One 60 mL bottle lasts 30 days at one serving a day.
Crude protein (min) 0%, crude fat (min) 100%, crude fiber (max) 0%, moisture (max) under 0.1%. In plain words: it is all oil.
ESS60 1.6 mg per 2 mL serving. A full bottle holds 48 mg.
Not recognized as an essential nutrient by the AAFCO Dog Food Nutrient Profiles. AAFCO rules require this note for any guaranteed substance outside its nutrient list.
8,100 kcal ME per kg, or 16.2 kcal per 2 mL serving. That matches pure olive oil.
Extra Virgin Olive Oil, ESS60 and Bacon Flavor, in order of weight. No amount is printed for the bacon flavor.
Pet products print a guaranteed analysis instead of a Supplement Facts box. It lists minimum protein and fat and maximum fiber and moisture, and the ingredients go in order of weight (AAFCO, Reading labels). The asterisk next to ESS60 is required for any guaranteed substance that is not on AAFCO's list of essential dog nutrients (AAFCO, Model regulations). Every line is typed out on the label page.
One serving
1.6 mg in 2 mL. Here is what that looks like next to the oil that carries it.
Oil weight uses USDA's figure of about 0.91 g per mL. The 16.2 kcal per serving on the label matches what that much olive oil supplies, so nearly every calorie comes from the oil.
For scale: the one rat study that made C60 famous gave 1.7 mg per kilogram of body weight (Baati 2012, rats). A 2 mL serving gives 1.6 mg to the whole dog. For a 50 lb dog (about 23 kg), that works out to roughly 0.07 mg per kilogram, about 4% of the rat dose per kilo. Rats are not dogs, and dose does not scale neatly between species, but it shows the serving is small.
Calorie check
16.2 kcal is a rounding error for a Labrador and a real treat for a Chihuahua. Slide to your dog.
16%of a 10% treat budget
Estimate only: resting energy = 70 x (weight in kg)0.75, times the life-stage factor (AAHA, Energy needs). Extras and treats should stay under 10% of daily calories (WSAVA, Treats). Your vet can give your dog's real number.
Most dogs at the vet are already overweight: 59% in a 2022 clinic survey (APOP, 2022 survey). Extra pounds load sore joints, so the calories in any add-on count. Vets suggest keeping treats and extras under 10% of the day's calories (WSAVA, Treats). For a small dog, one 2 mL serving can use a big share of that budget, so trim a treat or a few kibbles to make room. The serving size by weight page has the full table.
A dog's day
Any meal works. Consistency matters more than the clock.
Drizzle 2 mL over the meal and mix. The label gives one serving a day.
Evening works too. Pick one meal and keep it, so the serving is never skipped or doubled.
Steady, low-impact leash walks suit stiff joints better than weekend marathons.
A supportive bed and rugs on slick floors help older dogs get up and down.
Once a day with food comes from the sales FAQ. Walks (ACVS, Osteoarthritis); home changes for seniors (AAHA, Senior care 2023).
Claims and evidence
The brand's four benefit claims, each with the evidence behind it. Tap a card to flip it.
No published study of Mighty K9, or of C60 in any dog, has measured how dogs move. What does help a stiff dog move: a lean body weight and steady, low-impact exercise.
Stiffness after rest is a classic sign of osteoarthritis, which is painful and worth a vet visit. Owners often mistake that pain for normal aging.
The joint supplement with the best dog evidence is omega-3 (EPA and DHA). Olive oil is mostly oleic acid, an omega-9 fat, so it is not a stand-in.
One 2012 study of 18 rats reported longer lives on C60 in olive oil. A larger 2021 mouse study found no lifespan or healthspan benefit.
Claims are quoted from the brand's benefit graphics and sales page. Under FTC guidance, animal and lab studies alone do not prove a health claim (FTC, Health claims).
Nobody has published a study of Mighty K9 itself, and a PubMed search found no clinical trial of C60 in dogs (PubMed search, C60 in dogs). That does not mean it cannot help your dog. It means nobody has measured it yet, so your own notes during the 30-day window are the only test that counts. The full breakdown is on the claims and evidence page.
Research
Not all studies are equal. Watch how far each option has climbed.
Higher means stronger kinds of evidence, not better results: glucosamine reached the top rung and still showed no pain relief. No published trial of C60 in dogs turned up in a PubMed search on October 11, 2026.
The 2022 pain guidelines from the American Animal Hospital Association put weight control, exercise and rehab, vet-prescribed pain medicine and omega-3 fatty acids at the top for dog arthritis (AAHA, Pain guidelines 2022). If your dog is stiff, those come first, and they can sit alongside a food add-on like this one. See how the options compare on the comparison page.
Fair verdict
Weigh it the way you would any pet supplement: talk to your vet, check the label, and track your own dog (Tufts Petfoodology, Sensible use).
Quick check
Five questions. Your answers never leave your screen.
Limping, trouble getting up, or a dog who stops jumping into the car can all be signs of osteoarthritis, which is painful and treatable (ACVS, Osteoarthritis). A supplement should never stand in for that vet visit. More on who it suits on the who it's for page.
Pricing
Three packs. Every one covers the full 30-day money-back window.
Best value
$64.99total
$64.99 per bottle · about $2.17 a day
Shipping at checkout; free over $100
3-month supply
$269.97total
$89.99 per bottle · about $3.00 a day
Free U.S. shipping (order over $100)
6-month supply
$539.94total
$89.99 per bottle · about $3.00 a day
Free U.S. shipping (order over $100)
Prices as shown on the Mighty K9 store on October 12, 2026: 1 bottle $64.99 (sale price), 3 bottles $269.97 and 6 bottles $539.94 ($89.99 a bottle; the store showed no bulk discount, and its bundle selector also listed 1 bottle at $89.99). Free shipping on orders over $100. The checkout shows the final total before you pay; prices can change. Before you pay, the secure order page lists the final total, shipping and tax. We show no struck-through "was" prices, since we cannot check that anyone ever paid them.
For 90 days you need 3 bottles. Simplest order: 3-bottle pack for $269.97.
A planning aid for the label serving of 2 mL a day. Your vet may suggest a different amount for your dog; the order page has the final total.
The sales FAQ suggests starting with at least three bottles. That is a sales suggestion, not a dosing rule; one bottle is enough to judge your dog inside the 30-day window. Compare everything on the pricing page.
Guarantee
Every refund call starts with your order ID. Save the confirmation email.
Same meal, 2 mL, every day. A steady routine makes any change easier to judge.
Film your dog on the stairs or getting up, and compare with day 1. Videos beat memory.
Not for your dog? Call +1 (302) 200-3480 before day 30. Empty bottles count; return shipping is on you.
The sales page promises a full refund within 30 days, even if the bottles are empty. Return shipping is not included. Call +1 (302) 200-3480 with your order ID, mail the bottles to 1790 Broadway, Floor 11, New York, NY 10019, USA with your full name, email and order ID, and expect the refund 3-5 business days after the returned bottles are credited, then 5-10 days for your card issuer to post it. Details on the guarantee page.
Reviews
Only reviews matched to a real order are published, and none has passed that check yet.
Star scores, quotes and face photos from sales pages and seller briefs are not shown, because none could be matched to a real buyer. Reviews appear here only once they pass the four checks below.
A review goes live only after the order number and email match a real Mighty K9 order.
Low ratings are published on the same terms as high ones, and nothing is edited except spelling.
Federal rules ban fake reviews, reviews bought for a set opinion and AI-written testimonials.
A review claiming a supplement can treat a disease gets a clear note, never a highlight.
The seller's brief arrived with ten sample reviews, a 4-plus star score and big order counts. They read like template text, and none could be matched to a buyer, so we did not publish them. Federal rules ban fake reviews and testimonials, including AI-written ones (FTC, Fake reviews rule). See how we check reviews and how to spot fake pet supplement reviews.
Safety
The product page warns: for canine use only, keep out of reach of children and animals, and in case of accidental overdose, contact a health professional. Beyond that, three points matter most.
High-fat food is a major trigger for pancreatitis in dogs (AKC, Pancreatitis). Dogs with a history of it, or on a low-fat diet, need their vet's okay first.
In a 2021 mouse study, C60 oil left in bright light for days turned toxic (Grohn 2021, mice). Store the bottle closed, in a cupboard, away from heat.
The main C60 safety study ran 14 days in rats and was funded by a company that sells C60 oil (Burres 2024, rat safety). Long-term use has not been studied in dogs.
Mighty K9 is a dog supplement rather than a veterinary drug. Ask your vet first if your dog is under six months old, has had pancreatitis, is on a low-fat or weight-loss diet, takes any medicine, or is limping or in pain right now. Each 2 mL serving is pure oil with 16.2 calories. See side effects and safety.
Call your vet, or an animal poison line: Pet Poison Helpline (855) 764-7661 ($89 per incident) (Pet Poison Helpline) or ASPCA Animal Poison Control (888) 426-4435 (a fee may apply) (ASPCA, Poison Control). Both answer 24 hours a day. Have the bottle in hand.
Every caution, plus what to do if your dog gets an upset stomach, is on the side effects page.
Learn more
Why light is the enemy of olive oil and C60, where to keep the bottle, and what to do with an old one.
Read the articleOlive oil calories, the 10% treat rule, pancreatitis risk and how olive oil compares with fish oil.
Read the articleA lean weight, gentle daily exercise and safe floors: the basics that keep an older dog moving.
Read the articleNew to older-dog joint care? The senior dog joint guide covers weight, exercise, home changes and what to ask your vet. The signs of joint pain page helps you spot trouble early. And if you are weighing whether to buy, read is Mighty K9 legit?
FAQ
No question matches. Try a different word, or ask the order desk.
Mighty K9 is a bacon-flavored liquid for dogs made of organic extra virgin olive oil with 1.6 mg of ESS60 (C60) per 2 mL serving. The sales page positions it for senior-dog joint comfort, mobility and healthy aging. It is a supplement you add to food, not a veterinary drug or pain reliever.
The Guaranteed Analysis lists one serving as 2 mL, with 30 servings in a 60 mL bottle. The brand's calculator counts one full dropper as 1 mL, so that is two droppers over one meal a day. The calculator offers weight bands but showed no amounts, so ask your vet for small dogs.
ESS60 is a trademarked name for C60, a ball-shaped molecule of 60 carbon atoms, dissolved in olive oil. Each 2 mL serving of Mighty K9 carries 1.6 mg. The research on C60 comes from rodents: one small rat study reported longer lives, and a larger 2021 mouse study did not.
Nobody has published a study of Mighty K9 or of C60 in dogs, so there is no proof either way. The best-supported joint care for dogs is weight control, exercise, vet-prescribed pain medicine and omega-3s. Use the 30-day money-back window to judge it on your own dog.
Each serving is pure olive oil, so dogs with a pancreatitis history or a low-fat diet need their vet's okay first. The sales page says pups under six months should see a vet first. Keep the bottle out of light, because light-exposed C60 oil was toxic to mice.
One 60 mL bottle holds 30 servings of 2 mL, so it lasts 30 days at one serving a day. A 3-bottle pack lasts about 90 days and a 6-bottle pack about 180 days. The supply planner in the pricing section shows the simplest order for any number of months.
The sales FAQ says some owners notice changes in two to three weeks and fuller results at eight to twelve weeks. No study backs either timeline. Film your dog on stairs or getting up on day 1 and day 20, and decide before the 30-day window closes.
No. FDA does not approve pet supplements before sale. Animal products like this are regulated as animal food or, if they claim to treat disease, as animal drugs. Mighty K9 makes no disease claim on its label and is not a veterinary drug.
No interaction data has been published, so tell your vet before you start. Mighty K9 does not replace prescription pain medicine. Vet-prescribed NSAIDs remain the most predictably effective arthritis treatment for dogs, and human pain relievers are unsafe for dogs.
Call +1 (302) 200-3480 within 30 days with your order ID. The sales page says empty bottles qualify. Mail the bottles with your full name, email and order ID, pay the return shipping, and expect the refund 3-5 business days after they are credited.
Use the order buttons on this site, which go to the brand's secure checkout. Gomightyk9 is an authorized Mighty K9 shop, not the manufacturer. We can only vouch for orders placed through these links, because the order desk can see and refund them.
Still stuck? The full FAQ has more than 40 answers. For tracking or a refund on an order you have placed, call +1 (302) 200-3480.
Authorized U.S. shop for Mighty K9
Pick a pack. 2 mL over one meal a day, and every pack covers the full 30-day money-back window, even if the bottle is empty.
Official website