Subutex is a prescription medication that contains buprenorphine.
Buprenorphine is an opioid medication that fights pain and addiction caused by heroin, morphine, or other opiates. You take Subutex as a tablet under your tongue or in your cheek for around 3 minutes until it dissolves.
Suboxone, a sublingual film consisting of buprenorphine and naloxone, is for people who have already been addicted to heroin or other opioids for a long time. It works very well in treating that addiction. There are many different kinds of Suboxone tablets, and they are found as tablets or as strips.
The Suboxone strip is one that is coated with a film so that it can be used under the tongue; the medication dissolves and goes into your bloodstream over a period of time.
Suboxone Film vs. Tablet
The tablet or film is the same in that it works exactly the same way. Only, you swallow the tablet or film and it directly goes into your system, it does not go through your digestive tract first. There are no negative effects for swallowing a film (when you take it under your tongue), but if you swallow a tablet then there is a chance that you will get a bad stomach ache or constipated. This can occur when taking multiple tablets simultaneously. The Subutex tablet dissolves in about 30 seconds and has to be swallowed immediately as well for full effect, so this may be one of the reasons you have experienced this reaction with the Suboxone Film.