NAD+ is a naturally occurring coenzyme found in every cell of the body that is essential for energy production, cellular repair, and healthy aging. While NAD+ levels naturally decline with age, they can also be affected by stress, illness, poor sleep, and other lifestyle factors. Many people choose NAD+ supplementation to support energy, mental clarity, recovery, and overall wellness. Injectable NAD+ bypasses the digestive system, allowing for greater absorption than oral supplements. When prescribed by a licensed medical provider and sourced from a reputable compounding pharmacy, NAD+ injections are generally well tolerated, with the most common side effect being mild, temporary soreness at the injection site.