When we talk about "temporary" immune support, we’re referring to supplements that may help reduce the duration or severity of sickness when taken early—ideally, during the first few days of feeling unwell. While no single nutrient or herb can work magic, some options are worth having on hand.

Seasonal allergies happen when the immune system reacts to a substance that should otherwise be harmless. It’s like an immune response gone rogue. What happens next is the release of histamine—a tiny chemical messenger released from mast cells that leads to a cascade of inflammation. Histamine is at the center of seasonal allergies and causes most of the irritating symptoms.