Can someone possibly overdose by taking too much methadone or buprenorphine?

It is possible for an individual to overdose on methadone and overdose can be fatal. Mixing methadone with other sedatives or pain medications should never be attempted without first consulting with a physician. An overdose is less likely to occur on buprenorphine can be safer than methadone in that beyond 32 mg of buprenorphine “higher dose” does not lead to an increase in opioid effect