Niacinamide
Vitamin B3 for Dogs
Vitamin B3 (niacinamide) supports your dog's skin barrier, coat condition, and cellular energy metabolism

Niacinamide for dogs: the skin-barrier B vitamin
Vitamin B3 has two forms with different behaviour at higher amounts, and Prebiotic uses niacinamide specifically for its skin-barrier and energy-metabolism role, sitting alongside the gut-focused fibre blend.
What niacinamide does for skin specifically
Niacinamide supports epidermal renewal and helps skin hold on to moisture and resist irritation, a mechanism well studied in human dermatology, including its effect on skin ageing, pigmentation and stratum corneum hydration and structure. The same barrier mechanism applies to a dog's skin, which is why it's grouped with skin barrier nutrients rather than general vitamins.
Gut and skin health track together more than they appear to on the surface, which is the reasoning behind pairing niacinamide with the rest of Prebiotic's fibre blend rather than treating them as unrelated systems.
Niacinamide vs niacin
Niacinamide (nicotinamide) and niacin are both forms of vitamin B3, but they behave differently at higher amounts: niacin can cause flushing, niacinamide typically doesn't, which is part of why Broono uses niacinamide specifically rather than niacin.
Research notes
References for further reading
- Boo, Y.C. (2021) ‘Mechanistic basis and clinical evidence for the applications of nicotinamide (niacinamide) to control skin aging and pigmentation’, Antioxidants, 10(8), 1315
- Ong, R.R. and Goh, C.F. (2024) ‘Niacinamide: a review on dermal delivery strategies and clinical evidence’, Drug Delivery and Translational Research, 14(12), pp. 3512–3548
- Sjöberg, T., Fsahaye, A., Nilsson, E.J., Letasiova, S., Namro, I., Visdal-Johnsen, L., Hrapovic, N., Smiljanic, S., Österlund, C., Engblom, J. and Björklund, S. (2025) ‘Niacinamide and its impact on stratum corneum hydration and structure’, Scientific Reports, 15, 4953
Questions
Vitamin B3 FAQ
EVERY DOG AGES DIFFERENTLY.
Take the longevity assessment to find where your dog stands and which formula fits your dog. Takes 2 minutes.
Start →



