Support your immune system with Canada’s leading health & wellness vitamins and supplements. Some vitamins and minerals to consider when trying to boost your immune system include: Vitamin C, which acts as a powerful antioxidant: Vitamin D, which plays a vital role in decreasing inflammation and disease; Zinc Citrate, which helps strengthen your immune system and ward off infections; Multi First, which is a once-daily multivitamin for maintaining good health, and Pro-Bio Supreme for optimal digestion and gut health. Health First® products are proudly made in Canada with the highest quality ingredients and standards, free of artificial colours & flavours, and gluten.