Opioids methadone + cocaine ??

Currently on 120mgs methadone as part of an MMT program. I use a little coke to keep me from nodding while at work. I've noticed that 1-2 lines completely cancels out the stupor / lack of energy, nodding from the methadone all day long. I've tried caffiene but it doesn't work at all. Can anyone suggest an alternative to coke that will keep me off the nod all day? (And not lowering my dose though I've thought about it). Thanks in advance for any help, experience or opinions ppl share

Caffeine never really did much for me either (in terms of a cup of coffee, mountain dew, etc). But caffeine pills...the ones I bought were 200 mg/pill. This is about 4x stronger than an average caffeinated beverage and seriously keeps me up. I actually usually have to take some xanax if i take a whole pill cause I feel like I'm about to have a panic attack. It's good when you're on downers though