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Cataract Eye Drops NAC (N-Acetylcarnosine)


Dogs with both immature and ripe cataract responded quickly to the daily applications of soothing Can-C eye drops.

  • Improved visual behavior of the animals within weeks of treatment.
  • Cataract reversal starts from the periphery of the cataract followed by increased transparency of the lens.
  • 96% of canine eyes treated with N-acetyl-carnosine (Can-C) showed notable improvements.
  • Dogs with both immature and ripe cataracts showed significant visual improvement.

Two (5ml) vials per box and each 5ml vial contains approximately 65-drops.
Dosage: Apply 4 drops daily to each affected eye.



Can-C™ Ingredients:

  • N-a-Acetyl-Carnosine (NAC) 1.0% (approved by IVP)
  • Glycerin (lubricant) 1.0%
  • Carboxymethylcellulose sodium (lubricant) 0.3%


  • Sterile Water (Ophthalmic Grade Isotonic Solution, pH 6.3 to 6.5) buffered with Potassium Phosphate Dibasic and Potassium Phosphate Monobasic
  • Benzyl Alcohol (Preservative)

Eye Drop Installation Instructions:

  • Wash your hands with soap and water.
  • Look toward the ceiling with both eyes open.
  • Pull lower lid down with one hand to enlarge the opening.
  • Hold bottle in other hand and turn directly upside down. Then carefully line up with the eye.
  • Gently squeeze to instill “one drop” then gently close the eye for 60 seconds. The tip of the vial should never touch the eye.
  • Wait 5 – 10 minutes or even an hour or more between applications to the same eye to prevent overflow of the product and to ensure maximum benefit.
  • For cataract, apply a total of 4 drops daily to each affected eye. For general health improvement apply 2 drops daily to each eye.

Storage: Keep in cool dry environment and do not expose to extreme temperatures. All open vials should be discarded after 30 days.

Common Questions Asked

Important Note :This product IS NOT MEANT TO REPLACE surgery for cataract. If your pet is a suitable candidate for surgery, surgery has a higher percentage of recovering compared to using the eye drops. NAC Eye Drops are excellent for dogs that are not suitable for cataract surgery or dogs with Glaucoma, helping them manage with pressure built up.

Q. What percentage of your customers actually reverse cataracts in their pets?
A: All customers who use the product per instruction will see improvements in their pet’s cataract condition. The level of results can vary depending upon the maturity of the cataract at the outset of treatment. Additionally, injury induced dog cataracts and dog cataracts that result from steroid medications or diabetes can be more resistant and can take longer to respond to the product. Consistency of application is even more critical to success in the above mentioned scenarios and can mean the difference between minimal results and very good results. Again initial improvements generally present within the first 2-3 months. Optimal results are achieved with 6 – 12 months use. Once the optimal level of improvement has been reached, within 6 to 12 months time, it is advised to reduce the dose to 1 drop daily in the treated eye(s)

Q. What if the cataract has been there a long time and the dog is totally blind in that eye?
A: If the cataract is advanced to the point of total blindness the results are likely to be less than a 100% reversal with the use of Can-C. Cataracts at this stage often have hardened significantly and are more resistant to the good effects of Can-C™. Several points here; once cataracts have reached this advanced stage they become a constant irritant to the animal. The eyes can become very prone to infection as a result. Sadly, in many of these more severe cases, removal of the eye is advised. Can-C™ can reduce the risk of infection and even reduce these more mature cataracts in some instances with extended use. It is also important to note that the irritation can be significantly reduced as a result of Can-C™ being applied daily. As always it is advised to follow the advice of your veterinarian.

Q. Do the newer cataracts have a better success rate with this product?
A: In the human clinical trials, those who had cataracts for less than seven years experienced the most dramatic results. Those who had cataracts for seven to 15 years still received very good results. Those who had cataracts for more than 15 years experienced less dramatic improvements. This information tells us that the expected outcome is somewhat improved when treatment is initiated at the earlier stages of cataract development. However often with more mature cataracts it simply takes a little longer to achieve comparable results.

Q. What percentage of the cataract is removed in most cases?
A: The cataract is often fully reversed. With very mature cataract there is at least a very significant improvement in eye sight however complete reversal may not be possible depending upon the severity of the situation. Improvement in your pet’s behavior and negotiation abilities is generally a good indicator of the desired result being achieved. Additionally you can actually see by looking into your pets eye when the cataract begins to get smaller and then smaller.

Q. How will I be able to tell if the product is working or not?
A: In animals, the cataract is very visible to our view. You can actually see the cataract shrinking over time with the use of this product. The cataract will generally shrink from the parameter inward and so your pet may have improvements in his/her peripheral vision first. The behavior of your pet is the best indicator however and with the return of sight and resulting improved ability to navigate their surroundings come improved confidence, mood and behavior. All of these indicators will clearly let you know that the product is working. At the end of 6 months if you are not sure you may want to visit your vet to determine if it is time to go to the maintenance dose of 1 drop daily or to continue a little longer with the reversal dose of 3-4 drops daily.

Q. Are there any potential side effects?
A: With this formula, utilized in 10 years of human and animal clinical trials, there have been no reported side effects or contra-indications, even when used everyday for up to 2 years. Generally use of this natural anti-oxidant formulation is soothing and improves the overall environment in the eye.

Q. Will my dogs cataract come back again after it has been reversed?
A: While it takes 3-4 drops daily over 3 – 12 months to reverse cataract it takes far less to prevent the re-growth of cataract. Therefore, once optimal level of reversal has been achieved only one drop daily will prevent the return of cataract. At this point the product will last far longer and so it will be far less expensive to maintain the health of your pets’ eyes. Keep in mind that the same imbalance that allowed the cataract to form in the first place will still be present in your pet if you discontinue use of the product entirely. Unfortunately cataract will likely return, in a relatively short period of time, unless n-acetylcarnosine is being applied regularly to the eye.

Q. Will my dogs cataract come back again after it has been reversed?
A: Each box of Can-C contains two 5ml vials and each 5ml vial contains approximately 75 drops. When used to treat degenerative ocular conditions such as cataracts, one box will last approximately four to five weeks (3- 4 drops in each affected eye daily). When used as a preventive or maintenance measure, only one drop in each eye daily is needed, therefore one box of Can-C will last approximately 8 – 10 weeks.

Q. Will the drops cause any discomfort or stinging in my dogs eyes?
A: Due to the optimal PH levels of this formulation there should be absolutely no stinging affects. Many owners inform us that their pets actually begin to act eager when it is time time to apply these soothing eyedrops. We can therefore assume that the dogs feel some releif with the application of Can-C™ on a regular basis.

Q. Is there a need to use a syringe for injecting the solution into my dogs eyes?
A: No, the drops are delivered directly from the vial without the need for syringes. You will want to keep your pet quiet while applying the drops and prevent him/her from shaking the drops out of the eye. Many pet owners find that it is easiest to lightly pinch the lower lid between thumb and forefinger creating a little pocket to apply the eye drop to, then lightly rest your hand over the face of your pet to keep him/her calm and to ensure full absorption.

Q. My dogs cataracts are the result of diabetes will Can-C™ help her?
A: While diabetic induced cataracts are often more aggressive and persistent, we have found that with the consistent application of just 4 drops a day, visible improvements generally present within 6-8 weeks, depending on how mature the cataract is. As the diabetes will continue to influence your dog it is possible that the cataracts can return, we recommend a daily drop in each eye to help prevent the return of the cataract once optimal results have been achieved.

Customer Reviews and Testimonials

My Italian Greyhound 15 year old dog had cataracts so bad her eyes looked white. After 3 days of applying 6 drops per eye per day the white cataracts have receded, although still there, she can now see enough not to bump into things. We have bought a second box with two more vials and as recommended after that treatment is done we will cut the dosage to a couple drops a day. We think these drops are great. –

This product works over the long term and must be applied 4-6 times per day. We used one drop in each eye. Yorkie lost all sight. After applying the drops, our little yorkie can actually see out of the corner of her eye now. She is not walking into things and can see the door opening now!! Am writing this review from an honest perspective and how it has helped our little fur baby. Improvement is a surprised blessing. For anyone who wishes an alternative to 3-4k surgery — give it a try. Highly recommend, commit to the long haul. – Ran M

I purchased the n-acetylcarnosine eye drops for my 10 yr old standard poodle Missy and have been applying the drops for a little over 3 months. Amazingly her eyes are now clear it has been a truly incredible experience to watch. She is more like her old self with renewed confidence and enthusiasm for life. Also our Vet was extremely impressed with Missy’s improvements. We cannot begin to thank you enough for this incredible product. -DC,Jackson MO

Hello I ordered your Can-C product for my ailing Yorkshire Terrier Rocky. While Rockys’ eyes began to improve, sadly he passed away from heart problems before I could see the end result. We applied Can-C™ for 2 months at 3 drops per day, and at the time of his death his eyes were much clearer and he was more interested in what was going on around him. I know there was much improvement. Thank you for making Rockys’ last days brighter. -Most sincerely JB
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