Not so hot
The product I usually rely on for n-acetyl carnosine (NAC) drops was unavailable, so I bought this.  It may be a good product; I can't tell.  On the good side, it provides the product in two small bottles rather than one, lengthening the shelf life.  But the packaging leaves lots to be desired.  To open a bottle, you must puncture the opening with the cap after removing a protective ring. The puncture, made by screwing the cap down once the ring has been removed, creates a rough edge with a point as the cap is screwed off.  Watch out for that point.  It scratches the eyeball as you administer the drops.  The other problem with the packaging is that the opening in the vial is too big.  That is, it's almost impossible to aim a drop or two into your eye, given the volume of liquid that emerges when you tilt the vial.  So the stuff just runs down your cheek.  Finally--intellectual aggravation!!!--it annoys me to see that the active ingredient is listed as glycerin when I bought the product (you too?) for the so-called inactive ingredient of NAC
Rating: 2 stars