Suppose your arthritis is acting up, so you start taking Tylenol 8hr Arthritis Pain[1]. That's 2 tablets every 8 hours. They're extended-release with 650mg per tablet. A total of 3900 mg in 24 hours.
A few days later you get the flu, so you decide to add what seems like a completely different medication: Theraflu Flu Relief Max Strength[2]. It has a cough suppressant and an antihistamine. But each caplet also contains 500 mg of acetaminophen. It says to take 2 caplets every 6 hours, so you take 8 of them in 24 hours[3]. That's another 4000 mg.
Between the two, you're at 7900 mg.
Then you wake up in the morning and take both medications, but 30 minutes later you've forgotten you took them. You're not thinking straight because you're sick. So you accidentally take a second dose. That additional 2300 mg brings your total to 10200 mg.
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[1] https://www.tylenol.com/products/arthritis/tylenol-8hr-arthr...
[2] https://www.theraflu.com/products/day-night-flu-relief-max-s...
[3] You weren't supposed to take 8 of them, though. If you'd read the label very carefully, you'd have seen it also says not to exceed 6 in a 24-hour period.
I did toss on the other option, stand alone, at one point so I could get some sleep.
It left the medication I was more comfortable taking as an add-on option if things got bad enough. (This particular medication has much lower risk of overdose, so if I got stupid and took it again there would be no significant additional risk.)
It's ironic, but taking the combined medication with a known higher risk of its own was better than taking the lower risk medication.
One was controlled, higher risk, taken at specific times, while the other was taken in addition, on demand, as required.
... Suddenly I'm maintaining a continuous note of when I'm taking which medicine to avoid crossing safe limits (which I anyway was crossing most days).
I was only told to take 2 paracetamols a day (bullshit dose, I'd be waking up from the pain even with more pain meds).
"Diclofenac for rare use" - well, if nothing else is touching the pain, is it an emergency?
Eventually after forever I was able to transition to Ibuprofen + paracetamol. And I already have a health condition which is heavy on my kidneys... pain management can be absolutely crazy.
Have you considered clean cannabis products?
Speaking as someone who is not-infrequently in significant pain, I sincerely hope that you never have to.
Ibuprofen is a Nonsteroidal Anti-inflammatory Drug (NSAID) that reduces pain and inflammation, while acetaminophen does not. (Acetaminophen is believed to act mainly in the brain rather than at the site of injury).
Ibuprofen- Fundamentally, if the pain is caused by inflammation, reducing the immune systems response to it can reduce pain, but if the pain is more acute it won't make a dent.
With acetaminophen, taking more isn't a solution in most cases, you need another method to reduce the pain further if it doesn't achieve its goal.
(That's why it's combined with things like codeine, which affects the brain in a different way for an additive effect)
I don’t know about “most cases” but often you don’t want to reduce the pain _further_, you want to reduce the pain _again_. (Having an alternative definitely helps in the meantime.)
