Can-C™ contains the following ingredients:
N-Acetyl-Carnosine (NAC) 1.0% (approved by IVP)
Glycerin (lubricant) 1.0%
Carboxymethylcellulose sodium (lubricant) 0.3%
The N-acetylcarnosine (NAC) is the business end of the eye-drop, helping as it does to correct age aging problems and even reverse some conditions- such as cataract. For more details about what Can-C can be useful for please see: Why are Can-C eye-drops used?
The lubricants of glycerine and carboxymethylcellulose make the eye-drop comfortable and protect against problems such as dry eyes and irritation. What is more with their unique viscosity they also actually help carry more of the NAC into the eye, this has been proven in experiments and is part of the reason that the actual formula can be as important as the quality of the ingredients.
The excipients (carriers) used are:
Sterile water (ophthalmic grade isotonic solution, pH 6.7 to 6.9)
Purified benzyl alcohol
Other ingredients are necessary as in any formula, and Can-C contains sterile water. It also contains the buffers of potassium bicarbonate and boric acid that stabilize the Ph of the drops to 6.8 This is a most comfortable Ph and therefore most unlikely to produce side effects such as stinging or irritation.
Benzyl alcohol is also used as a preservative. Benzyl alcohol is a mild preservative- without the problems associated with other “potent” preservatives. Benzyl alcohol does not cause stinging by itself, that is dependant upon the end Ph of the eye-drop and Can-C is formulated to 6.8 a level that is most unlikely to cause stinging.