My German Short Haired Pointer has been taking this med for the last 2.5 years and the last package of Quan 30 I opened I noticed that only 3 of the tablets were a slightly different color(more beige) from the norm in the package and was wondering if I should give these to my pet. I have never seen this before but the variation in color is very noticeable and wondered if it is safe to administer these tablets