" What I care about is challenging our empathy response as A Society , " said the father-of-two on speaking out.
He hopes to reduce stigma.
Mylan said he suffered from " crippling anxiety" and began taking illegal drugs at the start of his acting career during his time performing in theatre in London.
" It was the biggest mistake I ever made, " said the 48-year-old, recalling his " One Night of weakness" after " a few drinks" that started his drug addiction.
" I was in The West End from a young age and there was lots of alcohol and recreational drugs and that cemented certain negative behaviours. "'Absolute lowest'
The Welsh actor played many TV roles including deputy headteacher Simon Lowsley in school-based and alongside Sheridan Smith in.
But for large parts of his career, Mylan was also battling a " cycle of Abuse " that led him to his " absolute lowest" as he spiralled between " use" of drugs and " clean up".
" My personal relationships suffered, my work relationships suffered and it robbed me of my inner ambition, " He Said .
" I managed to work, I managed around relationships and things to a degree but nothing ever lasted because, ultimately, it was chaos. It definitely took chunks of My Life away from me. "'I was almost like washed up on a shoreline half dead'
Mylan decided to tackle his addiction 10 Years ago as his " cycles of Abuse was getting dangerously worse" and didn't want to be one of the approximately of drug Abuse - of which almost half involved an.
" I was almost like washed up on a shoreline half dead, thinking I've had enough. I wanted To Live and be happy. "
That's how his conversation with now wife Tammie started and she helped Mylan get the.'Unconditional support'
" People are complicated and need help, support and empathy. Everybody will know somebody who is in a similar position to me. "'Stigma kept me from talking''Addiction is robbing people of themselves'
Now Mylan, a wants to help fellow recovering addicts and works with south Wales-based substance misuse charity.
" Addiction can never lift you from where you need to go, " said Mylan.
" Only The Right medication from your GP to battle with your depression, anxiety or bipolar can help.
" Addiction is robbing people of themselves. They can never be brought back unless they have The Right level of service and support.'Serious problem'
Mylan is now part of a campaign to challenge stigma with Adferiad, which supports nearly 16,000 vulnerable people every year, as He Said such support was " absolutely instrumental" in his recovery.
" Opioid use across Wales continues to be a serious problem, " said Adferiad associate directors Steve Campbell .
" There have been some very positive advances in measures to reduce harm with Take-Home Naloxone and Buvidal, which have helped to reduce The Number of deaths caused by overdose.
" It is also true however that in around a third of opioid related deaths, there is 'no known contact' reported between The Deceased and any support services.The Bbc is not responsible for the content of external sites.
" In order to combat this, it is vital that people reach out for support and receive The Help that they need. Unfortunately, there is still a lot of stigma Out There relating to the use of opioids and this can be a barrier to people seeking help.
" We know that being In Treatment is a protecting factor against many of the risks associated with opioid use, so we strive to put an end to the stigmatisation of people and urge anyone who needs help to please reach out for support. "