The 42p supplement, a favorite of Jennifer Aniston and Kendall Jenner, has sparked excitement and controversy. While some claim it can reverse Alzheimer's and restore brain function, others warn of potential risks. The supplement, known as NAD+, is a naturally occurring molecule that plays a crucial role in bodily reactions, including energy conversion and cellular repair. Levels of NAD+ decline with age, making it a promising target for preventing aging and age-related conditions. Sold as oral supplements, injections, and IV drips, it has gained popularity among celebrities like Hailey Bieber and Jennifer Aniston. However, scientists caution against self-medicating, as previous studies have shown that NAD+ supplements can raise levels to dangerous heights, potentially promoting cancer. The recent study, conducted on mice, found that boosting NAD+ levels before or after memory problems appeared could reverse Alzheimer's disease. This discovery offers a glimmer of hope, suggesting that the damaged brain can repair itself under certain conditions. However, it is essential to proceed with caution and conduct thorough human clinical trials to ensure the supplement's safety and efficacy. The supplement is available for £24.95–42p per pill from N2 Natural Nutrition on Amazon.