I use a brand of curcumin and the most recent bottle contained capsules a few shades lighter than what I am accustomed to taking. Is this color change an issue to be concerned about?
Variation in the color of turmeric and curcumin can occur, even from bottle-to-bottle for the same product. This is not necessarily a problem, as explained in the "What to Consider When Buying and Using" section of the Turmeric and Curcumin Supplements and Spices Review. Most importantly, the product should provide the expected amount of curcuminoid compounds (not all do!)— which is what ConsumerLab.com has measured and published (see the "What CL Found" and "Test Results by Product" sections of the Review).