Hello,
Thanks for posting your query.
Suboxone is a safe painkiller drug.
The tablet you have taken is like to be suboxone.
It is obviously a safe medicine and nothing untoward will happen but the way it was swallowed is not safe.
You Must doubly reassure yourself before you swallow a pill, it's name, dose and timing.
Preferably keep the medicines in separate labelled boxes and keep out of the reach of children.
Make sure what drug you have in hand and do not take it if you are in doubt, these are the rules of medication safety.
I hope this answers your query.
In case you have any follow up queries or doubts, you can forward them for me, and I shall be glad to help you.
Please accept my answer in case you do not have further queries.
Wishing you good health.