Immune Support Showdown: Tested Echinacea Boost With Vitamin D… Zinc Power For Seasons (60 Tabs) We’ve sampled our fair share of immune-support supplements, but Dr. Berg’s Emergency Immune Support w/Echinacea stands out for its potent blend. Each serving packs a punch with 2,000 IUs of Vitamin D, 10mg of Zinc, and herbal extracts like Echinacea. While we love the power of this combination, we must warn you: the herbal smells are quite strong, almost overwhelming at times. That said, if you’re looking for a straightforward, science-backed option to fortify our immune defenses during peak seasons, this 60-tablet pack delivers. Its in-your-face formulation might not win over the delicate noses among us, but we appreciate its effectiveness. For those who value potent ingredients without floral fragrances, this is a solid contender.