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B complex vitamins are vital for energy metabolism, supporting immune health, maintaining proper brain function, enabling DNA synthesis and repair, and facilitating the production of neurochemicals and signaling molecules.—Lana Barhum, Verywell Health, 18 May 2026 Biotin is a B complex vitamin that helps your body break down amino acids and carbohydrates to use for energy.—Rebecca Strong, USA Today, 3 Apr. 2026 With a combination of essential nutrients like Vitamin A, B complex, and D3, among others, these soft chews are an excellent supplement to support your French Bulldog's immune system, skin and coat health, bone strength, and overall vitality.—Amber Smith, Discover Magazine, 14 July 2023 This digestion-friendly grain contains B complex vitamins, which enrich the health of red blood cells in dogs, especially large breed puppies.—Dallas News, 21 Dec. 2022 The men’s formula starts with healthful CBD and adds vitamins A, C, D3, E, and B complex, as well as biotin for skin and hair health, zinc for an immunity boost, choline for metabolic health, and B12 for energy.—The Salt Lake Tribune, 18 July 2022