Official website · U.S. stocking partner for Mighty K9
Made for daily joint support, Mighty K9 is a liquid dog supplement: organic extra virgin olive oil that carries 1.6 mg of ESS60 (a branded C60 molecule) plus bacon flavor in every 2 mL serving. Drizzle it on one meal a day; a bottle lasts 30 days. If your dog has a health condition, ask your vet first. Prices start at $64.99, with a 30-day money-back window.
Written by the Mighty K9 editorial team · Updated
How it works in 3 steps
Fill the dropper twice, about 0.4 teaspoon. That is one serving, per the label: 1.6 mg of ESS60 in organic olive oil.
Drip it over kibble or wet food and stir. The bacon flavor helps picky dogs take it. Each serving adds 16.2 kcal.
Same meal every day. One bottle lasts 30 days, the length of the money-back window. Track stairs, rising and walks.
The short version
Mighty K9 is a once-a-day liquid supplement for dogs. Each 2 mL serving is organic extra virgin olive oil with 1.6 mg of ESS60 and a bacon flavor, measured with the dropper and mixed into your dog's food.
ESS60 is a trademarked form of C60, a tiny hollow ball made of 60 carbon atoms (USPTO via Justia, ESS60). The sales page sells it for joint comfort, easier movement and less stiffness in older dogs. It is not a veterinary drug, not a pain reliever and not a treatment for arthritis.
| What it is | Liquid drops for dogs: an oil, 2 fl oz (60 mL) per bottle |
|---|---|
| How to give it | 2 mL (2 full droppers) once a day, drizzled over a meal and mixed in |
| Inside each serving | Extra virgin olive oil, ESS60 1.6 mg, bacon flavor; 16.2 kcal |
| Servings | 30 per bottle, so one bottle lasts 30 days |
| Price | $64.99 for one bottle; $269.97 for 3; $539.94 for 6 |
| Money-back window | 30 days, empty bottles included; call +1 (302) 200-3480 with your order ID |
| Who sells it here | Mymightyk9, U.S. stocking partner (not the manufacturer) |
Read the full Guaranteed Analysis label, the three ingredients or the safety notes.
Step by step
Two droppers, one meal, every day. Scroll through the four steps; the picture follows along.
Fill the dropper twice (about 0.4 teaspoon). That is one serving, per the label.
Drip it over kibble or wet food. The bacon flavor helps picky eaters take it.
Stir so it coats the food. Give it at the same meal every day.
Note stairs, getting up and walks. Decide before the 30-day window closes.
The formula
Listed in label order. Hover or tap a card for its job and its main caution; each card opens a full profile.
Carrier oil (nearly all of the 2 mL)
Per serving: About 2 mL (most of each serving)
No joint data in dogsCarries the ESS60 and supplies the calories
Watch forPure fat: 16.2 kcal per serving. Ask your vet first if your dog has had pancreatitis or is on a low-fat diet.
Full profileCarbon molecule dissolved in the oil
Per serving: 1.6 mg per 2 mL (0.8 mg/mL)
No controlled dog trialsThe headline ingredient; sold as an antioxidant
Watch forBreaks down in light; keep the bottle dark. Long-term safety in dogs has not been studied.
Full profilePalatability flavor
Per serving: Not disclosed
Taste onlyMakes the oil taste good to dogs
Watch forThe flavor source is not listed. Dogs with food allergies: ask the seller what it is made from.
Full profileOnly ESS60 has a printed amount: 1.6 mg in each 2 mL, or 0.8 mg per mL. The olive oil makes up nearly all of the serving. See all three ingredients compared.
Try Mighty K9 for 30 days2 mL a day · from $64.99 a bottle · free U.S. shipping on 3+ bottles
Order nowRead the bottle
Eleven numbered spots on the real Guaranteed Analysis panel. Tap a number to read what that line means for your dog.
Tap a number to read what that line of the label means.
MIGHTY-K9 Canine Supplements, the brand name printed at the top of the label.
A spaniel resting its chin on the panel. The same face is on the bottle.
Per 2 mL serving; servings per container 30. One bottle lasts 30 days at one serving a day.
There is no protein. It is an oil, not a food or treat with nutrients beyond fat.
Every drop is fat. That is why one serving carries 16.2 kcal.
No fiber, as expected for a pure oil.
Almost no water, which helps an oil keep.
The only ingredient with an amount: 1.6 mg of ESS60 (C60) in each 2 mL, or 0.8 mg per mL.
“Not recognized as an essential nutrient by the AAFCO Dog Food Nutrient Profiles.” ESS60 is not a nutrient dogs need.
8,100 kcal ME/kg; 16.2 kcal ME per 2 mL serving. Count it with treats.
Extra Virgin Olive Oil, ESS60 and Bacon Flavor, in that order.
Dose check
The same 2 mL goes to every dog, so a small dog gets far more per pound than a big one. The bars are drawn to scale.
Every dog gets the same 1.6 mg, so the dose per pound drops as body weight rises. Even a small dog gets less than a fifth of the per-kilogram amount used in the 2012 rat study. No study has found the right ESS60 amount for dogs, because no controlled dog trial exists yet (Hui et al., 2023). Read what ESS60 is.
Calorie check
Each serving is pure olive oil fat: 16.2 kcal. Vets want treats and extras under 10% of the day's calories.
For a big dog, one serving is a small extra. For a toy breed, it uses most of the daily treat budget, so cut a treat or two to make room. Lean weight matters more for sore joints than any supplement: lean-fed Labradors in a lifelong study showed hip arthritis on X-ray at a median of 12 years instead of 6 (Smith et al., 2006).
Your dog's day
The label says once daily, mixed into food. Breakfast or dinner both work; the same meal every day works best.
Drizzle 2 mL over the morning meal and mix it in. One serving a day, per the label.
Evening works just as well. Pick one meal and keep it the same every day so you do not double up.
Gentle daily exercise keeps joints moving and weight down. Lean weight matters most for arthritis.
Each serving adds 16.2 kcal of fat. Trim treats a little so the daily total does not creep up.
The label and sales FAQ say once daily, mixed into food; the times are examples. Lean weight (ACVS, Osteoarthritis in Dogs); treat calories (WSAVA, Feeding treats).
Claims, checked
The four claims from the sales page, each beside the brand's own shield graphic and what published research actually shows.
Sales page says
What the evidence shows
No published dog study has tested C60 or ESS60 on joints. Across 38 joint compounds reviewed in 2022, omega-3 had the best evidence. (Barbeau-Gregoire et al., 2022) (Hui et al., 2023)
Not tested in dogs
Sales page says
What the evidence shows
The only C60 dog data used 6 beagles for 9 days, a different C60 oil and one blood marker. Nobody measured walking or getting up. (Hui et al., 2023)
Not tested in dogs
Sales page says
What the evidence shows
Slowness to rise is a classic sign of arthritis pain. Vets treat it first with weight control, NSAIDs and omega-3 diets. (Merck Vet Manual, Osteoarthritis) (AAHA Pain Guidelines, 2022)
See your vet
Sales page says
What the evidence shows
No source is given for this number. The famous C60 rat lifespan result was not repeated in a larger mouse study. (Baati et al., 2012) (Grohn et al., 2021)
Not shownShield graphics are the brand's own artwork for its claims. Claims are quoted from the sales page; they are the seller's words, not ours.
It does not treat arthritis, relieve pain like a medicine, or replace a vet exam. Slowness to rise, limping and trouble with stairs are classic signs of arthritis pain (Merck Vet Manual, Osteoarthritis). Pain is often mistaken for normal aging, so an older dog that slows down deserves a checkup (AAHA Senior Care Guidelines, 2023).
More detail on the benefits page and in the results timeline.
Where it fits
Veterinary guidelines rank the options. A supplement is an add-on, never the first step.
Lean-fed Labradors showed hip arthritis on X-ray at a median 12 years, versus 6 years for their littermates. (Smith et al., 2006) (ACVS, Osteoarthritis in Dogs)
AAHA tier 1 for arthritis pain. Needs a vet: side effects include vomiting, ulcers and kidney or liver harm. (AAHA Pain Guidelines, 2022) (FDA, Pain Relievers for Pets)
82% of dogs on a 3.5% fish-oil food bore more weight on sore legs, versus 38% of controls. (Roush et al., 2010) (AAHA Pain Guidelines, 2022)
Losing about 6% of body weight cut lameness in obese dogs with arthritis. (Marshall et al., 2010)
A 2022 meta-analysis found no pain-relief effect in 88.9% of trials. (Barbeau-Gregoire et al., 2022)
No controlled dog trial. The only dog data: 6 beagles, 9 days, another C60 oil, one blood marker. (Hui et al., 2023)
No dog joint study was found. Olive oil adds fat and calories. (Maina & Cox, 2025)
Bar length shows how much published dog evidence supports each option for joint comfort, based on the veterinary reviews and trials linked here. It is a reading aid, not a score from any one source.
If your dog is stiff, start with a vet visit, a lean body weight and steady gentle exercise. Ask your vet about pain medicine and omega-3 diets, which have the strongest dog evidence (AAHA Pain Guidelines, 2022). If you still want to try Mighty K9, it can sit on top of that plan. Read our senior dog joint guide.
Our honest take
Quick check
A checklist, not veterinary advice. Read who Mighty K9 is for and the side effects page.
Prices
Three packs, as listed on the brand store on October 11, 2026. Most owners should start with one bottle.
Lowest price per bottle
$64.99per bottle
$64.99 total · about $2.17 a day
$8 standard shipping
Free shipping
$89.99per bottle
$269.97 total · about $3.00 a day
Free U.S. standard shipping
Longest supply
$89.99per bottle
$539.94 total · about $3.00 a day
Free U.S. standard shipping
Prices as listed on the brand store on October 11, 2026. The 3- and 6-bottle packs list $89.99 a bottle, more than the single bottle's $64.99 sale price, so check the order page before you pick a bigger pack. A 10% Subscribe and Save option is also shown there. The secure order page shows the final total, shipping and tax before you pay. No struck-through "was" prices are shown here, because we cannot verify that anyone ever paid them.
For 30 days you need 1 bottle. Lowest total: 1-bottle order for $72.99.
Counts each order separately, with $8 shipping on a single bottle and free shipping on 3 or 6. A planning aid only; the order page has the final total.
30-day window
Keep your order ID: every refund call needs it. Save the confirmation email and the box.
The brand store lists 1-2 business days to process and 3-5 business days for standard U.S. shipping.
The sales FAQ says owners often notice changes in two to three weeks. Note stairs, rising and walks.
Not for your dog? Call the order desk now, while there is time to get a return number and mail the bottles.
Phone +1 (302) 200-3480 before day 30 ends. Empty bottles qualify; you pay return shipping.
The sales FAQ also says full results take eight to twelve weeks, which is longer than the 30-day window. Decide by day 30 based on what you have seen.
Return mail goes to 1775 Broadway, Floor 8, New York, NY 10019, USA, with your full name, email and order ID. The buyer pays return shipping. Full details on the guarantee page.
Reviews
No reviews are shown until the order desk matches them to a real order. The empty slots below are waiting for real dog owners.
4.3out of 5
Based on 1,202 verified ratings
Filled in only from reviews the order desk has matched to a real order. How we check reviews.
I commute on the train. Couch hesitation. Some days better. I don't write miracle stories. I keep it on the washer. I take it before I start the truck.
Pack review 1, as supplied
I farm a little plot out back. Truck-bed jump is the test. Week six, not week one. I keep it by the router. I take it when I clip the leash.
Pack review 2, as supplied
I volunteer at church on Sundays. I don't stack three joint chews plus this. Drops only. I keep it on the piano. I take it when I sit in the bleachers.
Pack review 3, as supplied
Safety first
For most healthy adult dogs, 2 mL of olive oil a day is a small amount of fat. The open questions are long-term C60 safety, which has not been studied in dogs, and the extra fat for dogs prone to stomach or pancreas trouble.
| Your dog | Why ask first | Source |
|---|---|---|
| Has had pancreatitis or eats a low-fat diet | Each serving is pure fat; recovering dogs are kept on low-fat food | (Merck Vet Manual, Pancreatitis (owner)) |
| Is a puppy under six months | The sales FAQ says to check with a vet first | Sales FAQ |
| Takes pain medicine or other drugs | Your vet should know every supplement your dog gets | (FDA, Pain Relievers for Pets) |
| Is overweight | 16.2 kcal a day adds up; lean weight matters most for joints | (WSAVA, Feeding treats) (ACVS, Osteoarthritis in Dogs) |
| Is limping or crying out | Pain needs an exam, not a supplement | (Merck Vet Manual, Osteoarthritis) |
Mighty K9 is a supplement for dogs, not a veterinary drug. Ask your vet first if your dog has had pancreatitis, is on a low-fat or weight-loss diet, takes any medicine (including pain relievers), is under six months old, or is pregnant or nursing. Limping or crying out needs an exam, not a supplement. See side effects and safety.
Keep the bottle closed, cool and dark: C60 in olive oil breaks down in light (Grohn et al., 2021). If your dog drinks the bottle, call your vet or ASPCA Animal Poison Control at (888) 426-4435 (ASPCA Animal Poison Control).
From the blog
The 2012 rat study, the 2021 mouse replication and the dog data, read line by line.
Read the article
The quiet signs of joint pain, a checklist to fill in at home and what to film for your vet.
Read the articleIs olive oil safe for dogs, how much is too much, and how it compares with fish oil for joints.
Read the articleFAQ
No question matches. No luck? Try another word, or phone the order desk.
Nobody knows yet. No controlled trial has tested C60 or ESS60 in dogs; the only dog data is a 9-day study of six beagles using a different C60 oil (Hui et al., 2023). Some owners may try it inside the 30-day money-back window while their vet handles the proven basics.
The label serving is 2 mL once a day, which is two full droppers or about 0.4 teaspoon, drizzled over one meal and mixed in. The brand does not publish a different amount by weight, so ask your vet about toy breeds and puppies.
ESS60 is a registered trademark of SES Research Inc. for C60 fullerene, a hollow molecule of 60 carbon atoms sold as a supplement ingredient (USPTO via Justia, ESS60). Each 2 mL serving of Mighty K9 has 1.6 mg of it dissolved in olive oil.
Long-term safety in dogs has not been studied. A 14-day rat study funded by SES Research, which two authors co-own, found no harm (Burres et al., 2024), but a mouse study found C60 in olive oil breaks down in light into harmful products (Grohn et al., 2021). Keep the bottle dark and ask your vet.
Each 2 mL serving has 16.2 kcal, all from fat, according to the label. That is about two-thirds of a 4 kg dog's daily treat budget but only about a fifth of a 20 kg dog's (WSAVA, Feeding treats).
On October 11, 2026 the brand store listed one bottle at $64.99 plus $8 shipping, 3 bottles at $269.97 and 6 bottles at $539.94 with free U.S. shipping. At those prices the single bottle is the cheapest per bottle.
The sales FAQ says owners often notice changes in two to three weeks and full results in eight to twelve weeks. That timeline comes from the seller, not a study, and it runs longer than the 30-day money-back window.
Yes, within 30 days. Call +1 (302) 200-3480 with your order ID; empty bottles count, and you pay return shipping. Orders placed directly on the brand store need a return number from [email protected] first (Mighty-K9, refund policy).
Who wrote this
Plain-language pages built from the label, the sales page and linked veterinary sources.
Last updated . See our editorial standards, and how we check reviews, before you rely on a page. This website is run by a U.S. stocking partner, not by the manufacturer. We are paid when you buy through our order links.
U.S. stocking partner for Mighty K9
Pick a pack. Every bottle holds 30 daily servings, enough to cover the whole 30-day money-back window.
