Herbs and supplements
Several herbs and supplements—including spirulina, eyebright, and goldenseal—have been studied for allergy relief. The plant extract butterbur, which is thought to reduce airway inflammation, has produced what are perhaps the strongest results. In a pair of clinical trials led by a Swiss research team, butterbur tablets eased symptoms just as much as the over-the-counter antihistamines fexofenadineand cetirizine, respectively.
For his part, Dr. Graham suggests his patients first try bromelain, an enzyme found in pineapple that is sometimes used to curb inflammation after sinus surgery. “It reduces swelling and improves breathing,” he says. “It’s a safe first step.”