Ayurveda texts and modern research back the following facts:
Parnayavani (Coleus aromaticus) possesses anti-inflammatory and mast cell-stabilizing properties.
Tailaparna (Eucalyptus globulus) has antimicrobial properties and improves ciliary movement and airflow.
Yashtimadhu (Glycyrrhiza glabra) has anti-inflammatory, mast cell-stabilizing, and demulcent properties.
Squirt 2-3 drops/sprays in each nostril 3-4 times daily. For drops, squeeze the bottle in an upside-down position. For spray, squeeze the bottle in an upright position.