Immune health may be top of mind in the time of COVID-19 (according to Nutrition Business Journal, immune supplement growth is projected to spike more than 25% to reach $3.3 billion in 2020 alone), but the truth is that consumers crave immune-supporting supplements no matter the season.

And while vitamin C remains a popular choice, it’s not the only game in town. Here are three science-backed immune health heroes for year-round support.