Integrative Therapeutics D-Limonene Gastrointestinal Support D-Limonene uses a patented orange peel extract to deliver relief from occasional heartburn in a softgel that only needs to be taken every other day. Ingredients Serving Size: 1 Softgel Amount/serving Orange (Citrus sinensis)(peel) Extract standardized to 98.5% d-limonene 1 g Other Ingredients: Gelatin, glycerin, purified water. Does Not Contain: Gluten, salt, wheat, corn, soy, dairy, or artificial colors. Dairy Free • Gluten Free Suggested Use Adults 18 years of age and older, upon first experiencing symptoms, swallow 1 softgel every other day for 20 days, and 1 softgel as needed for occasional relief thereafter. When taken in combination with other immune therapies, consult a healthcare professional for the recommended dose. Best if taken half an hour before or 1 hour after meals, with water. Not formulated for children. Do not bite or chew. Do not exceed the recommended dose. Warning: Do not use if you are pregnant, nursing, have gastritis, or peptic ulcer disease. If you are taking any medications, consult a healthcare professional prior to use. If symptoms persist, discontinue use and consult a healthcare professional. Storage: Keep closed in a cool, dry place. More Info. Quality global sourcing. Bottled & tested in the USA.