Frequently Asked Questions

Most parents notice subtle changes within 2-4 weeks, with more eagerness for walks, increased alertness, and improved energy. Visible mobility and coat improvements typically appear around month 2-3. Results build over time with consistent daily use.

Yes. The bone broth and beef liver in our formula give it a savory flavor dogs love. Most parents report their dogs eat it without hesitation, and many clean the bowl. It mixes easily into wet food, raw, or kibble.

LongTails is made with human-grade ingredients in a cGMP facility in the USA. No fillers, binders, or artificial additives. NR (nicotinamide riboside) has been studied extensively for safety. As with any supplement, we recommend consulting your veterinarian if your dog has a specific medical condition or takes medication.

LongTails benefits dogs of all ages. Senior dogs (7+) often show the most visible improvements in mobility and energy. Adult dogs benefit from proactive cellular support; the earlier you start, the more you're investing in long-term health. We recommend starting from age 3+.

LongTails is a food-based daily supplement. If your dog is on prescription medication or has a health condition, check with your veterinarian before starting any new supplement.

LongTails uses precision powder dosing based on your dog's weight. Small dogs (under 26 lbs): half scoop. Large dogs (27 to 75 lbs): one scoop. XL dogs (over 76 lbs): one and a half scoops. The included scoop makes it easy. Detailed dosing instructions are printed on every jar.

NAD+ (nicotinamide adenine dinucleotide) is a molecule found in every cell that's essential for energy production, DNA repair, and healthy aging. NAD+ falls with age in rodents and in human blood. NR (nicotinamide riboside) is a precursor shown to raise blood NAD+.

Absolutely. Longevity science is proactive, not reactive. Starting NAD+ support before visible decline means you're protecting cellular health while your dog is still thriving. Think of it as investing in years of vitality, not just treating symptoms after they appear.

Yes, anytime. You can pause, skip, change your delivery schedule, or cancel with no penalties. We want you subscribed because it's working for your dog, not because it's hard to leave.

We offer a 90-day money-back guarantee. If your dog isn't showing more good days, more energy, more eagerness, more vitality, we'll refund you in full. No questions asked.

Most joint supplements only address one symptom. LongTails combines NAD+ precursor (NR) for cellular energy and repair, collagen for skin and coat, bone broth, and beef liver for everyday nutrients. It's a complete longevity stack, not a single-purpose product.

One container provides a 30-day supply for most dogs. We recommend the subscription for best results and savings, since consistency is key with longevity supplements.