# LongTails > Longevity Supplements for Dogs — Science-backed nutrition for your dog's best years. LongTails makes premium longevity supplements for dogs, featuring Nicotinamide Riboside (NAD+ precursor), beef liver, bone broth, and collagen. Designed for adult and senior dogs, with NAD+ precursor (NR) for cellular energy, collagen for skin and coat, plus bone broth and beef liver. ## Products - LongTails Daily Longevity Supplement (NAD+ precursor + collagen): https://longtails.com/products/nad-precursor - LongTails LIFE+ Daily Vitality (the longevity stack for senior dogs; 6 active ingredients, every dose published, pet-specific probiotic) — available now as a preorder, ships Fall 2026: https://longtails.com/products/life-plus ## Learn - Blog: https://longtails.com/blogs/learn - NAD+ for Dogs: https://longtails.com/blogs/learn/the-complete-guide-to-nad-for-dogs - Berberine for Dogs: https://longtails.com/blogs/learn/berberine-for-dogs - NMN for Dogs: https://longtails.com/blogs/learn/nmn-for-dogs ## Compare - Liquid vs Powder NAD+ for Dogs (honest guide): https://longtails.com/pages/liquid-vs-powder-nad - LongTails NAD+ vs Pawprint Lab (honest comparison): https://longtails.com/pages/longtails-vs-pawprint - Best Daily Longevity Supplement for Senior Dogs (honest, evidence-first guide): https://longtails.com/pages/longevity-supplement-for-senior-dogs ## Key Pages - About: https://longtails.com/pages/about - FAQ: https://longtails.com/pages/faq - Science: https://longtails.com/pages/science ## Contact - Website: https://longtails.com - Email: hello@longtailsdog.com ## Also From LongTails - Grey Muzzle Mag: https://greymuzzlemag.com — Independent editorial on senior dog care and canine longevity
