Order Fentanyl Sublingual Tablets Online Purchase Fentanyl Sublingual Tablets comes on quickly and occurs intermittently, despite the use of long-acting pain medications. How to Take Fentanyl Sublingual Tablets You place a fentanyl tablet just below your tongue. As the tablet dissolves, you’ll notice some little bubbling. You shouldn’t chew it. The pill may take 15 to 25 minutes [...]