There is no upper limit. Your tolerance can keep increasing to extremely high levels.
Back when I was heavy into heroin I have no doubt I could have taken way more than 200mg without issue.
And morphine not like tramadol where it has other effects and those eventually become dangerous regardless of tolerance.
So yea, you kinda gotta go by how you feel, you definitely wanna be careful from an overdose perspective. When your tolerance is low, like now, that's when the risks are highest. So don't go taking huge increases before you've built up tolerance
Also be EXTREMELY careful touching anything like benzos or alcohol while using morphine, especially when your tolerance is still fairly low. Taking that stuff together drastically increases the risk of death. Way more than just taking a lot more all of a sudden.
If you can, and if you have someone else with you, it would be very smart to get a naloxone kit and training someone you're with to use it just in case. This is often not realistic for people, but if you can it's well worth it. Not just for you but also so you can help if you see someone else OD.
I have a naloxone kit for this purpose. More for others than for myself because the doses I take could easily kill an opioid novice person.
OK so, now that I've gone into the risks of overdosing, which provided you don't suddenly go doubling your dose or something stupid like that, and so long as you don't go taking it with benzos or alcohol or other depressant drugs, isn't too dangerous and doesn't have an upper limit that I've heard of.
Now it's time to talk about the other major risk, addiction. If you keep using opioids, eventually you'll become dependant in them. And if you haven't had an opioid dependence before and especially if you haven't had any drug addiction before, then it's extremely easy not to appreciate the danger this poses to your life and well being.
Taking opioids is highly risky. If you think this is something you'll be doing longer term, and haven't done so already, I highly advise you to take advantage of the experience of the people here in the recovery forums to learn more about what opioid addiction does to people.
Never thing it can't happen to you, no one can know that for sure in advance.
Take care man, and if you have other questions please feel free to ask them.
