MAXI/GUARD® Oral Cleansing Gel


MAXI/GUARD® Oral Cleansing Gel – Veterinary dentistry's most user-friendly and effective oral cleanser and freshener for dogs, cats, horses and exotics. MAXI/GUARD Oral Cleansing Gel offers the compound, zinc ascorbate/taurine. The product is natural, safe for daily use, inexpensive, taste free, and provides good pet acceptance. Works with or without brushing. Packaged in 4 ounce soft squeeze bottles.

How Does It Work?

Dr. Peter Emily explains in his science summary, "Zinc Ascorbate Cysteine - How Does it Work?" in Pet Veterinarian magazine that the sulfur amino acid chelates with malodorous sulfur compounds and oxidizes volatile fatty acids in the mouth. This provides a rapid (after 30 seconds) reduction of halitosis." Dr. Emily further explains that, "Zinc ascorbate stimulates collagen production. Basically, collagen stimulation is the repair process of tissue."

To view our comprehensive study that appeared in the Journal of Veterinary Dentistry, please click here.

Read our FAQs section on Oral Cleansing Gel

Prevention and Maintenance

You can virtually assure yourself of your pet's good oral health if you will follow these suggestions: regular checkups and scalings (removal of plaque and calculus) by the family's veterinarian; periodic checks of the pet's mouth for bad breath and discolored, inflamed gums; a diet which generally avoids sweet or soft, sticky foods; and daily use of a natural oral cleansing compound such as MAXI/GUARD Oral Cleansing Gel.


Regular visits to the family veterinarian provide you with the best guarantee that your pet's health is sound. However, you can supplement these visits with self examinations of your pet's mouth and regular use of MAXI/GUARD Oral Cleansing Gel.

MAXI/GUARD Oral Gel may be applied to large dogs directly from the bottle applicator tip. Smaller pets, especially cats, may require, finger or swab application. This product is concentrated. Apply a small quantity (pea size droplet) to each side of the mouth when treating cats. Choose the method that makes it easiest for you and your pet to engage in a regular and pleasant program of oral cleansing.

Recommended for:

  • Advanced Periodontal Cases
  • Post Surgery
  • Pre and Post Prophy

Equine uses include:


Exotic uses include:

  • Stomatitis in iguanas and snakes
  • Low grade sinus inflammation in birds
  • Helps reduce oral inflammation
  • Stomatitis secondary to dental malocclusions in rabbits
  • Zinc concentration safe for all exotics
  • Using Oral Cleansing Gel for exotics



MAXI/GUARD Oral Cleansing Gel's zinc ascorbate/sulfur amino acid formulation has been in veterinary dentistry use for over 20 years without incident. Laboratory evaluations demonstrate that dosing twice per day at the recommended small volume, will deliver considerably less zinc intake than recognized toxic levels or even the required daily intake from the diet. Natural oral compounds like zinc ascorbate/Taurine are generally recognized as the safest approach to oral care, especially in animals where the product is ingested.

Many home care dental products contain chlorhexidine. Published veterinary dental research has demonstrated that regular chlorhexidine use can increase the rate of mineralization plaque (calculus formation), stain the teeth brown, and decrease the patient’s sense of taste. MAXI/GUARD Oral Cleansing Gel does not contain chlorhexidine and does not have these side effects. To view an excerpt from a paper presented at the American Veterinary Dental Society Forum on this topic, click here.


MAXI/GUARD Oral Gel is the natural solution to pet acceptance problems. Maxi/Guard Oral Gel is an alcohol free, chlorhexidine free and virtually taste free home dental care product that works with or without brushing. Over twenty years of veterinary and pet-owner approval. MAXI/GUARD Oral Gel is safe for all pets, but remember that it is a concentrated product and only a small amount is needed per application. If an excessive amount is used, compliance may be a problem. If you have tried MAXI/GUARD Oral Cleansing Gel and are having compliance issues, you may want to try MAXI/GUARD OraZn. For more information on OraZn, click here. To understand the similarities and differences of MAXI/GUARD Oral Cleansing Gel and MAXI/GUARD OraZn, click here.

Helpful Hint

For preparation and use of MAXI/GUARD Oral Cleansing Gel, open the bottle and pour in the accompanying vial of Vitamin C. Replace applicator tip. After globule drops to the bottom of the bottle, shake until dissolved. Rub or squeeze a small amount (a pea size droplet for cats) on each side above your pet's back upper teeth and gums. A natural cleansing action will distribute product to remote areas. Use daily for best results. Store in a refrigerator or cool, dark cabinet after mixing.  As long as the formula is blue-green it is fresh and working. After mixing, the approximate shelf life will be one year in preferred storage conditions.

Printable Information

To download a printable file, choose from the following:

MAXI/GUARD Dental Client Educational Brochure

Clinical and Microbiological Effects of Oral Zinc Ascorbate Gel in Cats, Journal of Veterinary Dentistry, David E. Clarke, BVSc

MAXI/GUARD for Equine, dental use

MAXI/GUARD for Exotics, dental use

MAXI/GUARD for ER & Critical Care, dental use

Home Care Products (proceedings excerpt), Fraser Hale, DVM, FAVD, Dip AVDC

Oral Gel vs. OraZn, Similarities and Differences

Dental Practice Tips

Product Guide

Canadian Product Guide




"Rapid reduction of halitosis (bad breath) within 30 seconds in all dogs treated.”

“Even periodic dentals did not perform the odor removing function of MAXI/GUARD. I only wish I had tried it sooner.”

"In an evaluation of toy breeds in Dallas, I found dogs that needed their teeth cleaned every 3 months went beyond 12 months between prophies with a once daily application of MAXI/GUARD zinc ascorbate."

"Treated exotic species includes pet birds, iguanas, and snakes with stomatitis, a potentially life threatening disease."

"I have been using MAXI/GUARD Oral Gel for over five years on my equine dental cases. This product does a better job than anything else I have found for healing oral lesions. I found Oral Gel especially useful on older horses with gingivitis and excessive tartar buildup around canine and incisor teeth. If I have a client apply MAXI/GUARD Oral Gel daily with a soft bristle toothbrush, within 7-14 days, the gingival lesions are healed and the tartar will not reform in this area. I also dispense Oral Gel to owners with horses that have bit sores. It seems to give almost immediate relief from discomfort and allows continued training while the lesions heal.”

“MAXI/GUARD Gel works great for cleaning the teeth of our Atlantic Bottlenose Dolphins, Sunset Sam and Sybil.”
AM, Vet Technician, Clearwater Aquarium