5‑Methylnicotinic Acid, a biologically active form of vitamin B3, serves as a key NAD⁺ precursor in nutraceuticals, pharmaceuticals, and cosmetics. Its relevance stems from growing scientific evidence linking NAD⁺ boosting to anti‑aging, metabolic health, and cognitive resilience. The 5‑Methylnicotinic Acid market size reached approximately USD 420 million in 2025, and the growth outlook projects a CAGR of 7.5% through the 2026‑2033 market forecast, driven by escalating consumer demand for health‑span solutions, supportive regulatory pathways for dietary supplements, and expanding applications across functional foods and dermal care.