Carnosine is an antioxidant and anti-glycating dipeptide naturally present in tissues. In the eye, it is proposed to protect the lens proteins from cross-linking and oxidation, which are key drivers of age-related cataract formation. N-acetylcarnosine (NAC) is a more stable form used in eye drops that is converted to carnosine within the eye, potentially slowing the progression of lens opacification.
Verdict
A low-risk, experimental approach for potentially slowing early-stage cataract progression.
HEALTHSPAN IMPACT
Experimental
RISK LEVEL
Low
EVIDENCE GRADE
B
MONTHLY COST
$20 - $40
Protocol
- Apply 1-2 drops of a 1% N-acetylcarnosine solution to each eye, two times per day.
Flags
- Primary side effect is temporary stinging or burning upon application.
- Efficacy for reversing existing cataracts is not supported by strong evidence.
- Should not be used as a substitute for professional ophthalmological care or surgery.
- Ensure the product is sterile and from a reputable manufacturer.