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C-NAC eye drops are the original N-acetylcarnosine (often shorted to NAC) eye drop formula developed to normalise senile cataract impairment.
In addition to senile cataract impairment, C-NAC may also have other benefits. Although the information is not yet published, Russian researchers believe “that the unique C-NAC formula with its added and synergistic lubricants, could also have benefit in the following eye disorders.
Users and scientists have reported that C-NAC is also great for:
Cataract surgery is the most commonly performed operation in the world with over 1.5 operations in the USA alone every year. Although generally safe there is still a complication rate of 30 to 50% of patients who develop opacification of the posterior lens capsule within two years and require further lazer treatment. C-NAC cataract eye drops have helped thousands of people normalise their cataracts without surgery, leaving the natural lens in place rather than an artificial one.
C-NAC contains a special analogue of the di-peptide carnosine, a naturally occurring nutrient that combines two amino acids or protein fragments. This particular form is known as N-acetylcarnosine or NAC and is the main ingredient due to its potency at ‘mopping up’ free radicals, the root cause of tissue damage, accelerated aging in the body and cataracts.
Cataracts are caused by the process of cross linking or glycosylation, as we age our natural anti-oxidant defense against glycosylation declines, leading to the eye lens to harden and discolour over the course of a lifetime.
Other forms of carnosine are broken down by naturally occurring enzymes in the eye, but the researchers found that the N-acetylcarnosine form is highly resilient and conveys the L-carnosine directly to the aqueous humor. Once in the fluid it provides the lens proteins with complete anti-oxidant protection against oxidation caused by free radicals.
Human trials on people suffering from senile cataract, using a twice daily dose of C-NAC for six months showed the following remarkable results:
And whilst the patients were taking the NAC carnosine eye drops, the lead researcher noted that there was no recurrence of cataract.
C-NAC eye drops have been shown to have measurable effects within only 1-month of use, but for maximum efficacy, it is recommended that administration continue for 3-5 months. N-actylcarnosine works best the sooner it is used after a cataract is detected.
Typical courses of treatment are:
Two drops twice a day in one eye meaning 2 bottles (1 box) will last a month
2 drops twice a day in two eyes meaning 2 bottles (1 box) will last about 2 and a half weeks.
Senile cataracts are an on-going aging disorder so N-acetylcarnosine may be required on a regular basis to help maintain the eye’s natural anti-oxidant defences, so a maintenance dose of 1 drop twice a day in both eyes is highly recommended and one box would last a month.
C-NAC is the only patented NAC eye drops for cataract, the only carnosine eye drops that use the exact formula that was used in both the animal and human trials. They are the first and only proven N-actylcarnosine eye drops that offer a cost effective, non-invasive alternative to cataract surgery.
Can C-NAC be taken in conjunction with other common eye supplements such as lutein and zeaxanthin / astaxanthin?
We do not recommend that the C-NAC eye-drops are combined with lutein (unless a patient has a cataract associated with a retinal disorder), this is because lutein appears to block the receptor sites and may lower the efficacy of the results. You should stop taking lutein for at least the first 6 months but after this period they may be started again. This is because C-NAC does the majority of its restorative work in that period and thereafter it is maintenance, thus a reduced efficacy is not so essential.
The same is true for zeaxanthin; however we are not aware of contraindications with astaxanthin.
Can one eat spirulina and other superfoods when using C-NAC? Are they considered foods or supplements, with problems similar to other caretenoids when using C-NAC?
The only known contraindication is with lutein competing with the same receptors in the eye as the n-acetylcarnosine. This does not mean that the combined intake of lutein with use of C-NAC Eyedrops would invalidate the effectiveness, but it’s efficacy could be reduced which may mean a longer treatment time.
Are there any problems using C-NAC concurrently with Xalatan® eye-drops for glaucoma pressure control? Would you recommend use of both?
To date there have been no noted contraindications or side effects noted with the use of other eye-drops combined with C-NAC, but naturally as there are so many versions, not all eye-drops have been tested along with the same. The inventors stated that beta blocker eye-drops used for glaucoma may actually have additional benefit when combined with C-NAC to help further reduce the intraocular pressure.
How long has C-NAC has been on the market?
C-NAC has been sold since 2001 and in that time has helped thousands of people cure their senile cataracts without painful surgery. In fact it is estimated that there have been 50,000 documented patient cases of C-NAC use.
Are C-NAC eye drops ok for vegans?
There are no animal ingredients in C-NAC eye drops, all are 100% plant based; therefore the product is suitable for both vegetarians and vegans.
Do C-NAC eye drops work for other eye conditions?
Open-angle primary glaucoma
C-NAC eye-drops is a useful adjunct in the condition of open angle glaucoma. Although not proven, it is believed that the anti-glycosylation properties of C-NAC reduce the accumulation of proteins from around the schlemm canal (the valve in the eye), thus over time precipitating a release of pressure in the eye by allowing more waste materials to pass through into the bloodstream.
Subcapsular cataracts
At present the clinical trials have focused on cataracts of the senile type – perhaps because they are the most common. At present there is anecdotal evidence to support role in other cataracts and aging eye disorders, perhaps because the delivery of carnosine is a natural defence mechanism inside the eye. The inventor of the technology does predispose that C-NAC will be effective for other cataracts; details have been noted inside the book ‘The Cataract Cure’ by Marios Kyriazis, M.D.
My optician says that my cataract is worse than last time but I can see better, how is this possible?
We are finding that in some cases that the cataract after treatment approximately the same size or in some cases is perceived as larger. This may be because the action of the drops is upon the crystallins within the lens, effectively making them clearer, whilst not perhaps reducing the amount / size of the cataract.
Normally most patients will see an improvement of glare sensitivity (usually stated as improvements to night driving), then enhanced color perception and of course the ability to read additional lines on an eye chart, a clear sign of improving eye sight.
Effectively it can take several more months (in some cases) to actually reduce the size of the cataract, please note that the addition of C-NAC, the new oral formula, can be taken alongside the eye-drops to help speed up this process.
Can a person who is diabetic use the C-NAC?
Yes, in fact the inventor recommends them for diabetic retinopathy.
Is it safe and appropriate that a person use C-NAC after they have already had cataract surgery?
Yes! Although it will not affect the replacement lens as that is made of plastic, however C-NAC can support the eye in other ways to ensure that other deterioration is avoided or at least delayed.
Many patients are using C-NAC in this way, as there is no deterioration to the plastic of the artificial lens and C-NACs actions can help to maintain other eye structures – in our opinion its use is still worthy in such cases.
Will C-NAC eye drops work even though I wear contact lenses?
Yes in fact they can benefit contact lens wearing in 2 ways, firstly they inhibit the accumulation of lactic acid, thereby reducing the pain associated with contacts and secondly the lubricants in C-NAC make wearing the contacts more comfortable.
One thing we would recommend is that contacts be removed as normal, the eye washed with cold water and gently dabbed dry and then apply the C-NAC and wait 15 minutes (this gives the eye-drop time to pass through the membranes and enter the eye) before replacing the contact lens as normal. Note that although this is not an essential requirement, it may be beneficial to do so.
Can C-NAC be used to treat cataracts in dogs and other pets?
Yes, C-NAC has been effectively tested on dogs and rabbits. In fact because these animals lack an enzyme called carnosinase (which is found in humans) the drops actually work much faster. This is because the lack of carnosinase means that more of the active ingredient enters the eye and therefore more of the active ingredient is delivered. The only drawback is that administering the drops to animals may mean more loss as the animal blinks or shakes its head etc. But the bottom line is that C-NAC is known to improve the dog’s vision when applied daily for several weeks.
How do I store C-NAC eye drops?
C-NAC is stable for lengthy periods at room temperature, although at home we recommend that you keep them in the warmest part of the fridge (i.e. the door). This is especially true with opened bottle’s which should be discarded 28 days after opening (but if you are using the drops every day as recommended the bottle will be empty after 14 days).
Can C-NAC be damaged if it is frozen in transit?
There is no impact of frozen temperature on samples
How is C-NAC delivered into the eye?
The lens itself is inside the eye, floating in a liquid called the aqueous humour, the outer part of the eye (the part you can touch) normally inhibits absorption, but C-NAC has been specially designed to pass through the outer membranes and deliver carnosine into the fluid of the eye, thus making contact with the lens and helping to prevent glycosylation, the process that clouds the crystallins in the lens etc.
Do C-NAC eye drops have any influence on eye pressure?
All the current clinical trial support that in the majority of cases that C-NAC lowers the intraocular pressure, we have not heard reports of increased pressure to date. Officially the trials have been conducted in cataracts, specifically senile cataracts, however as has been made clear in Dr. Marios Kyriazis book ‘The Cataract Cure, the story of n-acetylcarnosine’ there have been a number of other noted improvements including some reduction in the intraocular pressure of the eye and we have received a number of statements to that affect also.