Sinus Health & Seasonal Discomfort Formula is a natural dietary supplement taken daily to help promote sinus & nasal health and reduce seasonal discomfort. The 60 vegetarian capsules contain herbal extracts shown to support healthy sinuses and histamine levels.*Quercetin A flavonoid found in fruits and vegetables, Quercetin has been shown to support healthy histamine levels and promote healthy immune response.*Nettle Root Extract Nettle Root Extract (Urtica Dioica) is an herbal extract used to help prevent seasonal discomfort.*Bromelain Bromelain, an extract derived from pineapple, is an enzyme shown to reduce seasonal discomfort.*Butterbur Extract Butterbur is taken to reduce seasonal discomfort. Our Butterbur is certified free of pyrrolizidine alkaloids.*DosageTake one (1) capsule one to three times daily or as directed by a physician.*Safety WarningKeep out of reach of children. Pregnant or lactating women and those undergoing treatment for a medical condition should consult a physician before taking this supplement.LES Labs Does It DifferentlyWe source only the highest-quality natural ingredients from around the world. All of our supplements are manufactured in the USA in cGMP facilities - most of them locally here in California. While many supplement companies add fillers and proprietary blends full of ineffective ingredients, we formulate ours with powerful herbal extracts, amino acids, and vitamins and minerals backed by scientific research.Purity, Period.No gluten, no dairy, no preservatives, no artificial flavors, no artificial colors, no way. Purity, period.