CoQ10 and its popular brand Ubiquinol is the most consumed and probably worst construed product for improving egg quality. Women consume millions of bottles of CoQ10 and Ubiquinol a year hoping that it will improve their ovarian health and egg quality.
Supplements
There has been much discussion as to whether people should take DHEA. Some countries banned it because it is classified as a human steroid. Most countries have now relented a let people take it.