Pharmacokinetics of Essential Oils in Different Capsules

Selection Criteria: Participants must meet all the following criteria: * Adults ages 18-35 years old * Local to metropolitan Jackson, MS, and/or willing to come to the clinical research center for study visits * Willing to wash out of all internally consumed essential oil and botanical products for at least 2 weeks prior to starting the study and willing to maintain the washout for the duration of the study (approximately 8 weeks) * Willing to avoid all frankincense, wild orange, and lemon essential oil in any form (aromatic, topical, or internal) for the duration of the study (approximately 5 weeks). * Willing to avoid alcohol, recreational drugs, and smoking/vaping for 3 days prior to each arm of the study * Willing to receive an intravenous catheter in the arm or hand every two weeks for 4 weeks (three times total) * History of successful blood/plasma donation, IV insertion, or blood collection by phlebotomy * Weigh at least 110 pounds * No uncontrolled metabolic disease * No unstable major diseases under treatment by healthcare professional * No pregnancy within the last 60 days or currently breastfeeding (females) * No allergy to olive oil or frankincense, lemon, or wild orange essential oils * No regular internal consumption of frankincense, lemon, or wild orange essential oil regularly within the last 1 month (regularly is defined as dosing daily for more than 2 consecutive weeks, or dosing more than 2-3 times per week for 4 consecutive weeks) * No alcohol, recreatio…