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68 of 71 people found the following review helpful
on July 2, 2012
Hello,

(Edit to add on July 11, 2012) I would give this 5 stars, but I DO want to bring a pet owner's attention to the lot number. The lot number is the top number on the bottom of the bottle and should read after 4 2010. You will understand this when you look at the bottle.

PLEASE check your lot number to make sure your product was manufactured AFTER 2010. The Propylene glycol was REMOVED from the product in 2010.

I just received notice that the Biotene Drinking Water Additive contained Propylene glycol which is considered an adulteration of the cat food and a violation of the Federal Food, Drug, and Cosmetic Act.[34]

There are many warnings in numerous searches and all conclude it is not safe for animal use.

"Animals - Propylene glycol is an approved food additive for dog food under the category of animal feed and is generally recognized as safe (GRAS[30]) for dogs.[31] Similarly, propylene glycol is an approved food additive for human food as well.[32] The exception is that it is prohibited for use in food for cats because of a species-specific reaction in the body, as noted in 21 CFR 582.1666.

Veterinary data indicate that propylene glycol is toxic to dogs with a 50% chance of being lethal at doses of 9mL/kg, although the figure is higher for most laboratory animals (LD50 at levels of 20mL/kg).[33]

However, propylene glycol may be toxic to cats in ways not seen in other animals. The U.S. Food and Drug Administration has determined that its presence in or on cat food has not been shown by adequate scientific data to be safe for use. Any such use is considered an adulteration of the cat food and a violation of the Federal Food, Drug, and Cosmetic Act.[34]"
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45 of 46 people found the following review helpful
on December 17, 2011
Added this as directed, and after about 4 days my dog started coughing and appeared not to feel well. I took him the vet and he wasn't sick. So I discontinued use of this product for a week, he stopped coughing and appeared normal. So that I wasn't jumping to conclusions and to make sure whatever caused his cough wasn't a fluke, I started adding this to his water again. After a few days he starting coughing again and not feeling well. So I discontinued use permanently. Could just be my dog, not sure.
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29 of 30 people found the following review helpful
on May 23, 2010
I have been using this for about four months on my two dogs. One a German Shorthaired Pointer and the other a Bischon. It is recommended that you brush your dogs teeth at least 3 times a week. I brush their teeth once a week now that I am using this water additive. Great for my small dog as he does not drink much, but my pointer is very active and thirsty, so I go through the additive like crazy. Between brushings I feel that the additive keeps my dogs from having bad breath. I do not notice any new plaque build up. We also got the bischon from the dog pound and at his initial check up at our vet I was told he would need to have his teeth cleaned. Took him back for an appt. three months later and the tech who cleans teeth said that his teeth looked great and to keep up the additive and brushing. I was paying too much for the additive when I was purchasing it from the vet, so I now purchase it online.
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21 of 22 people found the following review helpful
I have four cats and have two cats that had bad tartar/plaque. One cat had to go to the vet for a teeth cleaning, blood tests, etc. It ended up costing around $800 because teeth had to be pulled. Unfortunately our vet never taught us about keeping a cat's teeth clean with a water additive. Isn't that the first thing they should tell you when you go in for the first visit? No, because they want to make lots of money off you pulling out all your cat's teeth. This is the horrible reality. So on my own I discovered this water additive. I first tried plaque attack and that worked well in two weeks. However my cats don't really like the taste of plaque attack that much. So I only spray it in their mouths a few times a week now. For maintenance I'm relying on this water additive. I did notice that our youngest kitten did have much better breath after about a week of using this in the water. It is totally flavorless except for a slight hint of lemon. Once it mixes into the water your cats won't be able to taste it. None of our cats have turned their noses up when tasting the water and it is apparently very safe. I put one squirt in each water bowl filled with about a cup and a half of water. I change the water daily. This additive is going to save me a lot of money and my cats lots of misery. If your cats won't let you brush their teeth this is an excellent alternative. I am only sorry I didn't find this soon enough for one of our poor cats. Don't wait until it is too late. Buy this immediately if not sooner. I'm a believer. If you are just starting to tackle this plaque/tartar problem get: -Plaque Attack Pet Dental Spray - As Seen On TV. In two weeks you will really notice a difference! Then use this daily and use plaque attack a few times a week.

~The Rebecca Review
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34 of 38 people found the following review helpful
on June 5, 2010
I was originally given this by my vet dentist, she actually trained an additional 5 years for dentistry. This was after my poor dog lost a lot of teeth due to severe periodontal disease. I assume if she gave it to me this must be good so I ordered more thru amazon as I hear it is more expensive thru a vet. To anyone whose dog has bad breath please beware that is not normal and you cannot cure that at home, I know because I learned the hard way, get the pet to a vet. But in between and aftercare I will keep using this, my other dogs won't let me get much teethbrushing done.
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10 of 10 people found the following review helpful
My dogs do not like having their teeth brushed, so cleaning can be a chore. I've tried several different methods from using a doggie toothbrush and paste, to finger brushes, and finally dental wipes. I've always used Zymox products and Biotene (human kind) for my own needs, when I discovered this product. I love the Biotene mouthwash myself. I was thrilled when I discovered this product for pets, so I thought I would give it a try. One of my dog's had moderate staining on his teeth, and I was quite embarrassed to show him, since his teeth weren't gleaming white. After using this product for a month or two, I could tell a BIG difference!! The stains gradually disappeared and with regular use, I could see great improvement. I couldn't be more pleased!! I also like the fact that this product is made with the Biotene enzymes that help keep bacteria down, which means the water bowl stays fresher, even though I change it regularly. This product is safe and effective! Thanks to Amazon for carrying the Zymox and Biotene brands!! Please note: if you are multi-pet home, I recommend buying two of the pump bottles, so it will last longer before having to re-order again. Just a couple squirts, and this stuff has really worked like magic for us! Highly recommended!!
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8 of 8 people found the following review helpful
on June 1, 2012
Having a 12 year old cat with Stomatits for 3 years and using Lysine for controlling the mouth irritation, it worked to a small degree and cat was uncomfortable. Still had saliva being produced to the point of drooling but once we added the Biotene to the water bowl, this reduced dramatically. Cat is definately more comfortable, less irritation to the gums as well as less drooling with just one month of using Biotene. Great product.
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6 of 6 people found the following review helpful
on November 14, 2012
I have read and re-read the instructions for this product. I have the water to Biotene solution proportioned appropriately. There is a drastic reduction in water consumption of our cats when I use this product. They will even start seeking running tap water to avoid drinking their water when I put Biotene in it. I am replacing the water 1x to 2x a day.

I also have one cat with some kidney issues. I worried that the intake of Biotene itself along with the decreased consumption of water is very bad for her. This product went into the trash after trying to use for a month. I will not be repurchasing. I have given up on this "easy" method and have resorted to brushing their teeth 1x a week with enzyme toothpaste specifically for cats/dogs.

Thanks for taking the time to read my review, and I hope you found it helpful in making a purchase decision.
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10 of 12 people found the following review helpful
Our vet recommended this for our 13 year-young Yorkie. Easy to use. Just put recommended amount in drinking water. That's it. The difference is night-and-day, fresher breath after a few days use. It's a bit costly, however.

UPDATE 2012-08-29:
Our dog developed a dry hacking cough after a few days. Then I remembered that a reviewer here said this made her dog cough. So I stopped using it and the cough went away. In case it was just coincidence (and because the bad dog breath returned), I started to use it again. Within 2 days the dry hacking cough returned. I stopped using it altogether, and will just be a bit more vigilant with brushing my dog's teeth more often. I cannot recommend this item. Dropped to one star.
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5 of 5 people found the following review helpful
on March 30, 2013
Ok so my vet recommended this for my cat's red gums. She didn't want to go straight to invasive cleaning for mediocre redness. I was skeptical but it actually worked! Did it remove all of the redness? No but it improved it quite a bit. Also it improved my cat's breath from "Death Incarnate" to simply "Fishmarket". I'll keep using it.
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