Small dose of mdma and co codamol safe?

24 y/o male. Just wondering if this is a safe combo. Planning to take 0.12g of mdma tonight split between 2 doses. It's not my first time, but first time taking it with Co codamol.

I've been taking Co codamol for my bad back the last few days. Its 30 500 strength. I took a dose around 12pm and that's the last one Im going to take today. I also take 45mg mirtazapine a day and have done mdma on it once before and just found it dulled the effects slightly.

Is there a risk of a bad interaction between the Co codamol and mdma even though they're both relatively low doses? And advice appreciated. Cheers