"My 11-year-old Lab was struggling to get up in the mornings. After 2 weeks on the Joint Serum, she's back to greeting me at the door. I actually cried the first time she ran to me again."

"Been using it for 3 weeks and honestly not seeing much difference yet. My dog is 14 so maybe it's too late. The liquid is easy to give though, I'll finish the bottle and see."

"Skeptical at first because we've tried everything. Glucosamine chews, expensive vet visits, even acupuncture. This is the first thing that actually made a visible difference. My GSD is jumping on the couch again."

"The liquid format is a game changer. My picky eater won't touch chews but doesn't even notice this mixed into her food. Within a week I noticed her getting up easier."

"Our vet was impressed at Benny's last checkup. Said whatever we're doing, keep doing it. He's 13 and moving like he's 8. Only giving 4 stars because the dropper is a bit fiddly to use."

"Solid product. Took about 10 days to really notice a difference but now it's undeniable. My boy is more willing to go on longer walks. Only reason for 4 stars is I wish the bottle was bigger."

"Didn't work for my dog. Used it for a full month and saw zero improvement. Maybe it works for some dogs but not mine. Also the taste seems off, my dog kept licking his lips after."

"I was spending $200/month on Cosequin and Dasuquin combined. Switched to this and not only is it cheaper, it actually works better. The liquid absorbs so much faster than those hard tablets ever did."

"Day 3 and my old girl is already showing improvement. She actually wagged her tail when I grabbed the leash yesterday. Haven't seen that in months. I'm emotional writing this."

"It's fine. I think it helps a little but it's hard to tell with my dog since she has good days and bad days anyway. The price is a bit steep for what you get. Might reorder, might not."

"Finally something that works for my picky eater. She won't touch pills or chews but laps this right up mixed in her water. Noticed less stiffness after about a week. We're on month 2 now and the difference is night and day."

"Bought this for my 9yo Rottweiler. He was on Rimadyl from the vet which worried me because of the liver side effects. This natural alternative has him moving just as well without the scary meds. Vet approved the switch."

"I have two senior dogs and both are on this now. The older one (14) took about 2 weeks to show improvement but now she's doing stairs again. The younger one (10) responded within days. Worth every penny."

"Quick shipping, easy to use. Just squirt it on their food. My dog didn't even notice it was there. Results took about a week but now he's noticeably more comfortable on walks. Wish they had a subscription discount."

"My golden is 12 and was really struggling. The vet suggested we consider quality of life decisions. Started this as a last resort and within 2 weeks she was back to her old self. I truly believe this gave us more time together."

"My vet recommended glucosamine tablets but my Beagle refused them. Found this and it's been incredible. She doesn't even know she's taking a supplement. 3 weeks in and she's playing fetch again. She's 10!"

"Good product, works as described. My only complaint is the bottle runs out faster than expected with a large breed dog. I have a 90lb Shepherd and go through it in about 3 weeks. Would love a larger size option."

"On our third bottle now. My 13yo Dachshund had a slipped disc 2 years ago and has never been the same since. This hasn't cured her obviously but she's so much more comfortable. She actually jumps on the bed again which she hadn't done in over a year."

"Shipping took forever. Almost 2 weeks to arrive which was frustrating. The product itself seems decent, my dog is slightly more active but nothing dramatic after 2 weeks of use. Expected more based on the reviews I read."

"I'm a vet tech and I'm genuinely impressed with the ingredient list. UC-II collagen, hyaluronic acid, PEA for inflammation... this is what I'd formulate if I made my own supplement. My own senior Pittie is on it and thriving."

"Tried Nutramax, Zesty Paws, and PetHonesty before this. None of them did anything noticeable. This actually works. The difference is the liquid format I think. My dog absorbs it immediately instead of passing a half-dissolved chew."

"We almost put our 15-year-old Collie down last month. Started this as a Hail Mary and I swear she's a different dog. She's not young again but she's comfortable and happy. That's all I wanted."

"My wife was skeptical but I ordered it anyway. Two weeks later she's the one reminding me to give it to our dog every morning. The improvement in his mobility is that obvious."

"Works well but I wish the instructions were clearer on dosage for smaller dogs. I have a 12lb Yorkie and had to email support to figure out how much to give. Product itself is good though."

"Third bottle in. My 11yo Boxer went from barely making it up the porch steps to trotting up them. The consistency is key though. Missed a few days once and noticed him stiffen up again."

"I've tried literally every joint supplement on Amazon. This is the only one where I can actually SEE a difference. The liquid format makes sense because my dog never fully chewed those tablets anyway."

"Decent product. My dog seems slightly more comfortable but nothing miraculous. Maybe my expectations were too high. The liquid is easy to administer which is a plus. Will keep using it."

"Our German Shepherd had hip dysplasia diagnosed at 6. He's now 9 and on this for 3 months. Our vet said his joint flexibility has actually improved at his last checkup. She asked what we changed."

"My neighbor recommended this after seeing my dog struggle on walks. Ordered it that night. 10 days later my boy is keeping pace with me again instead of lagging behind. Wish I'd found this sooner."

"The product works but the bottle is small for the price. I have two large dogs and go through it quickly. Would love a bigger bottle option or multi-dog discount. Results are real though."

"Former vet assistant here. Most joint supplements are garbage with fillers and low bioavailability. This one actually has clinical-grade ingredients at proper doses. My own senior rescue is proof it works."

"My Labrador is 13 and was on prescription pain meds. Our vet agreed to try this alongside and we've been able to reduce his medication by half. He's more alert and playful now too."

"Took longer than expected to see results. About 3 weeks before I noticed anything. But now at week 5, my dog is definitely moving better. Patience is needed with this one."

"My 10yo Pit mix was limping after every walk. Tried Cosequin for 6 months with zero improvement. Switched to this and within 2 weeks the limping stopped. I'm not exaggerating. Completely stopped."

"The fact that it's liquid makes all the difference. My dog has always spit out pills and chews. This goes right on his food and he doesn't even notice. And it actually works unlike the powders we tried."

"Bought this for my senior Husky who was having trouble on our daily hikes. After a month she's back to her usual self on the trails. My hiking buddy is back and I couldn't be happier."

"Good supplement. My only issue is it drips a bit when you squeeze the dropper. Minor annoyance but the results speak for themselves. My old boy is more willing to play now."

"We adopted a 12-year-old shelter dog who could barely walk. The shelter said he'd need a wheelchair soon. 6 weeks on this and he's walking around the yard on his own. The shelter volunteers can't believe it."

"I'm on my 4th bottle now. My Australian Shepherd is 11 and acts like she's 6 again. She's herding the cats, chasing squirrels, doing zoomies in the yard. This stuff is magic."

"It works but I have to be honest, the smell isn't great. My dog doesn't seem to mind but I notice it when I open the bottle. Results are good enough that I'll keep buying though."

"My vet wanted to put my dog on Galliprant which is $3/day. Tried this first at a fraction of the cost and it works just as well. Vet confirmed his joints are doing better at the follow-up."

"Three dogs, all seniors, all on this now. The improvement across all three has been noticeable. My oldest (16!) is the most improved. She's eating better and moving easier."

"Solid 4 stars. Works well for mobility but I was hoping it would help with his energy levels too. He moves better but still sleeps most of the day. Maybe that's just age though. He's 14."

"I cried watching my dog run for the first time in months. She's 12 and had gotten so stiff she could barely get off her bed. Two weeks on this and she greeted me at the door running. Worth every single penny."

"Switched from a well-known brand (won't name names) that cost twice as much. This works better. The liquid format means my dog actually absorbs it instead of passing chunks of undigested chew."

"My dog's groomer noticed the difference before I even told her we started a new supplement. Said he was much easier to work with because he wasn't stiff and reactive to being touched anymore."

"Product is good but shipping to Canada took almost 3 weeks. Once we got it though, results came fast. About a week in and our old girl was noticeably more comfortable. Just wish delivery was faster."

"My dog walker texted me after the first week asking what changed. Said my 13yo Lab was pulling on the leash again for the first time in months. That's when I knew this stuff was working."

"I'm a skeptic by nature and thought this was snake oil. My wife insisted we try it. I owe her an apology. Our 10yo Mastiff is climbing stairs again. Haven't seen that in 8 months."

"The cold-processed liquid format is what sold me. Heat destroys nutrients and most supplements are heat-processed. You can tell this is different because it actually works. Science matters."

"Works as advertised. My only gripe is I wish they offered auto-ship so I don't have to remember to reorder. The product itself is great. My 11yo Pointer is moving much better."

"After spending thousands on vet visits, x-rays, and prescription meds, this $40 bottle has done more for my dog's comfort than all of it combined. I'm angry I didn't find this sooner."

"My dog was diagnosed with severe arthritis at 8. He's now 10 and on this for 4 months. His vet said his mobility scores have actually improved which is rare for his condition. Highly recommend."

"Good product overall. My dog is moving better after about 2 weeks. Only reason for 4 stars is the dropper markings are hard to read. But the actual supplement is effective."

"Bought this after my neighbor's dog had amazing results. Same thing happened with mine. 12yo Golden went from struggling to stand to greeting me at the door within 3 weeks. Neighbor was right."

"I volunteer at a senior dog rescue and recommended this to our vet. We now use it for all our senior fosters. The difference in their comfort level and adoptability has been remarkable."

"My wife and I were discussing whether it was time to let our 14yo go. Started this as one last try. A month later he's back to following us around the house and going on short walks. We got more time."

"Works well for joint mobility. My only suggestion would be to make the bottle easier to squeeze. I have arthritis in my own hands and the dropper is a bit stiff. Product itself is excellent."

"Tried glucosamine pills for a year. Nothing. Tried chondroitin chews for 6 months. Nothing. Tried this liquid and saw results in 10 days. The delivery method matters more than people realize."

"My 11yo Springer Spaniel was retired from agility due to joint issues. After 2 months on this she's doing light courses again. Not competing but the fact she can even do them is incredible."