By Jamie Ducharme November 1, 2024 9:15 AM EDT T here’s no proven cure for a cold, but many people have remedies they swear by when they’re feeling under the weather. (Chicken soup or citrus fruit, anyone?) One common strategy is taking tablets or lozenges that contain zinc, a natural mineral that helps the immune system fight back against bacteria and viruses. But many experts don’t recommend that people pop zinc tablets at the first sign of a sniffle. Dr. Katharine DeGeorge, a family-medicine