Mixing high dose of xanax with methylphenidate(concerta)?

[Lynxbefriends]

Currently been tapering down for the past year from 12mg xanax, maybe longer than a year.
I'm on 5-6mg now, I need to take 3.5mg when I wake up to not be in withdrawal anymore.
Don't get high off it anymore, but desperately need to clean the house - my friend gave me an 18mg concerta.
I've had them before and they let me get all the house work done.

My question, is it okay to take with such a large amount of xanax?
(This is out of harm reduction)

Drugs.com says no interaction, but I just want to make sure.

People have told me the xanax will kill the stimulant high, some others have said the stimulant will put you in withdrawal... I've had a lot of mixed opinions.

I'd be taken 3.5mg, then wait an hour, then the 18mg concerta , and then possibly another 1mg 30 mins - hour after that?

[Matt_affleck911]

I see this is an old question but I'm first time here and just will say 18mg Concerta will be overpowered as you didn't take any with high amount xanax, it's no spedball but can make some problems with tachychardia so be carefull....now if you take like 2mg xanax and 72mg Concerta and feel focused, motivated without anxiety f.e. that is sweet spot but a small ammount of alprazolam will overpower MPH and if it does you will need literally half bottle of Concerta, this is my experience and I say for mayority of other reports that i red in last 2 years so you are safe but take 1mg xanax more and no cleaning...stay safe