Whole World Botanicals Royal Desmodium Allergy-Lung Support comes in a 4 fluid ounce dropper top bottle. This Amazonian Rainforest herb is traditionally consumed to support allergies and the lungs. Using Desmodium Adscendens leaves and stems, the extract is 1:1 strength, meaning 1 gram of drops is equivalent to 1 gram of raw herb. This product is gluten-free and sustainably sourced.