Suboxone film is absorbed through the moist tissue inside your mouth, not through your stomach. Taking it correctly means placing it in the right spot, leaving it completely alone while it dissolves, and protecting your teeth afterward. If you swallow the film or your saliva too early, you lose a significant portion of the medication: only about 30% of the active ingredient reaches your bloodstream even under ideal conditions, so proper technique matters more than you might expect.
Sublingual Placement: Step by Step
The most common method is sublingual, meaning under the tongue. Before you open the packet, take a sip of water or use your tongue to moisten the floor of your mouth. This helps the film stick and dissolve evenly. Then open the foil pouch with dry hands and place the film flat under your tongue. Press it gently against the tissue for a few seconds so it adheres.
Once the film is in place, leave it there until it has completely dissolved. Do not chew it, move it around, or swallow it. Avoid talking while the film is dissolving, because even the movement of your tongue during speech can interfere with absorption. The film typically takes several minutes to dissolve fully. During that time, let saliva pool naturally in your mouth rather than swallowing it. Do not eat, drink, or smoke while the film is in place.
Buccal Placement: The Cheek Method
Some people place the film against the inside of the cheek instead. This is called buccal administration. Wet the inside of your cheek with your tongue or rinse your mouth with water first, then press the film against the cheek tissue and hold it for about five seconds so it sticks. Leave it there without touching, moving, or chewing it until it fully dissolves.
Your prescriber may recommend the sublingual method during the early phase of treatment (induction), because the cheek method slightly increases your exposure to naloxone, one of the two ingredients in Suboxone. Higher naloxone exposure can raise the chance of uncomfortable withdrawal symptoms during those first doses. Once you’re stable on your dose, the two methods deliver a similar amount of the active medication, so you can use whichever your provider recommends. The key is to stick with the same method consistently, since switching back and forth can cause small fluctuations in how much medication you absorb.
Taking More Than One Film at a Time
If your prescribed dose requires two films, place the second one on the opposite side of your mouth from the first. For sublingual use, that means one film on each side under the tongue. For buccal use, one on the inside of each cheek. Do not stack two films in the same spot.
If you need a third film, wait until the first two have fully dissolved before placing it. This prevents overcrowding in your mouth, which can cause films to overlap or peel away from the tissue before they’ve been absorbed.
Why Swallowing Reduces Effectiveness
Buprenorphine, the primary active ingredient, is poorly absorbed through the digestive tract. When taken correctly under the tongue or against the cheek, roughly 30% of the dose reaches your bloodstream. If you chew and swallow the film, that number drops substantially because the drug gets broken down by your liver before it can take effect. Even swallowing saliva too frequently while the film dissolves washes some of the medication into your stomach, where it’s largely wasted. Studies show that more than half the dose can remain in your saliva during dissolution, so keeping that saliva in your mouth and giving the tissue time to absorb the medication makes a real difference.
Protecting Your Teeth
In 2022, the FDA issued a safety warning about dental problems linked to buprenorphine medicines dissolved in the mouth. Reports included tooth decay, cavities, oral infections, and even tooth loss, sometimes in patients who had no prior dental issues. The acidic environment the dissolving film creates appears to be a contributing factor.
After the film has completely dissolved, take a large sip of water, gently swish it around your teeth and gums, and swallow. This helps rinse residual medication and acid away from your enamel. Wait at least one hour before brushing your teeth. Brushing too soon can damage enamel that’s been temporarily softened by the acidic conditions in your mouth. Making this rinse-and-wait routine a habit with every dose is one of the most practical things you can do to protect your dental health over the long term.
Eating, Drinking, and Smoking
Do not eat or drink anything while the film is dissolving. After the film has fully dissolved, some clinicians recommend holding off on eating or drinking (beyond the water rinse) for at least 15 to 20 minutes to give the tissue more time to absorb any remaining medication. Smoking is also off-limits during dissolution, since the heat, chemicals, and mouth movement can all interfere with absorption. Once the film is gone and you’ve done your water rinse, you’re fine to resume normal activity.
If You Miss a Dose
Take it as soon as you remember. If it’s already close to the time for your next scheduled dose, skip the missed one and continue with your regular schedule. Do not double up by taking two doses at once unless your prescriber specifically tells you to.
Handling and Storage
Keep the film in its sealed foil pouch until you’re ready to use it. Handle it with clean, dry fingers. Do not cut or tear the film, even if you think you need a smaller dose. Store the pouches at room temperature, away from moisture and direct light. If you have unused or expired films, follow your pharmacy’s disposal instructions or use a drug take-back program rather than leaving them accessible in your home.