Our terrier mix started having trouble breathing… He was staring into space, and not even looking in our eyes. My son is the dog’s actual owner. He told me, “It looks like Enzo is having trouble breathing?” I told him, “Enzo is dying.”My son realized he had been in denial and rushed the dog to the vet’s AT MIDNIGHT that night. The 24-hour vet service Vet took one look at Enzo and told my son that Enzo was in heart failure. There was just no hope. The Vet suggested euthanizing Enzo, to be merciful, right then and there. My son could not do it. He said he knew he should have agreed, Enzo was struggling just to stay alive. But he could just not make the decision to euthanize Enzo. When my son and the dog arrived back home at about 2 a.m. I was shocked… I didn’t think they would come back home together. And, of course Enzo was still in dire straits, barely clinging to life. A website on dog health, re. dogs in the condition of ours said, “At this stage, your dog could pass away at any second.”That night, while my son was down at the vet’s, I scoured the Internet for something, anything, that might help his dog with his breathing issues. When I saw this product, I clicked on the reviews. A lady, writing a review, had EXACTLY the same experience with her dog that we were having with “Enzo”. She said he gave him some of these drops, and he almost instantly improved?! What?! Within two days, her dog had made MAJOR progress. Now her dog was back to a normal, happy life. They now give him the drops EVERY DAY never miss, and will NEVER MISS until the dog’s last day.I instantly bought some of these drops and, somehow, got them the next day! I am not an Amazon Prime member. Our Enzo was still panting, and staring into space, just continuing to, somehow, cling to life. He wasn’t eating even his favorite treats, even if they were placed right in front of his mouth. I was surprised that he had survived even one more day. Enzo is older, and I didn’t think he could stand up another second to his issues. I gave him some these drops, had to force them down him.Within a couple of hours, Enzo was looking me in the eye! I could NOT believe it. His breathing was still not great, but noticeably better! During the next 72 hours, I was with him constantly. A little quarter cup of water here, a little piece of bread. Within 3 days, it was like a MIRACLE. No, it wasn’t LIKE a miracle, it WAS a miracle. I had been praying for Enzo. And I prayed and thanked God for directing us to this supplement. I thanked Him for the vets who had come up with the supplement’s formulation.Yes, I know this is a dog we are talking about, not a human being. But if you have a dog you are bonded to, you know how I was feeling. I was so thankful that Enzo was still alive. In fact, I could not believe the change that Enzo was continuing to undergo. I am telling you, Enzo, that night, was just GONE. Gone. It was so sad, so sobering. You know your dog is not going to live forever. But you are never prepared for his passing away.Enzo was part of our family, had been through so much with us, and he was dying, going any second. I just knew his next short breath would be his last. His heart rate must have been 200 beats a minute. I thought, “Even a young, strong dog could not last with this kind of heart rate.” And then, in 3 days, he was happy again, staring us in the eyes, and starting to eat a little bit again, drinking water. Making a comeback that was beyond incredible.That was the night of August 1st, 2022. I will never forget that night when the vet suggested euthanizing Enzo. He was right. But my son just couldn’t do it. He just couldn’t live with saying good-bye. The right decision was to let Enzo go.. Any vet would have made the same call. But my son’s inability to do it just tells you how meaningful the bond was that he had with Enzo.I am writing this on December 29th. Every day for the past 5 months, I have thanked God for one more day with Enzo! A day we never thought we would have. Enzo is happy and loving, but we don’t let him get too crazy physically . He is still on the edge of his life expectancy years, and is not a spring chicken! His overall health is obviously not great. But this supplement has bought us time! Each day with Enzo is a gift we never anticipated.If your dog is struggling with some of the issues mentioned in my review, or the other reviews on here; BUY this product and try it. You can get it in a smaller size. I just buy this large size because I know we will go through it, and be re-ordering! This large size is a really good deal! But you can buy a smaller size, couple-of-week’s size, to try it. I know it is a kind of expensive. But I guess you can tell, I think this supplement is worth the money!I’m sorry for this long review! But I wrote it to support the opinion of others on here who took time to write and help convince me to try this supplement. I am so thankful that others wrote of their experiences. Their detailed reviews put me in their shoes, and gave me hope.To see our dog virtually come back to life, was one of the most special experiences I have ever had. To be able to hold him, and hug him, and to have him look up into my eyes, you know how it is!UPDATE: It is now April 4, 2025…and Enzo is still with us! That night I talked about above was over two years ago! I am on here buying another bottle of this heart supplement!Paul in Texas