Yes you can - I've done it for years, as the mechanism in Fiorinal w/ Codeine is different for dealing with migraines and other pain than Fentanyl is.
yes
yes
You will die.
Yes, aspirin has no known significant drug interactions with fentanyl
Can you mix methadone with fentanyl
None! My God! Eating a fentanyl patch could kill you!
yes
No. This can cause a potentially lethal overdose. Venlafaxine is a cytochrome P450 3A4 inhibitor which is the enzyme which metabolizes fentanyl. Levels of fentanyl can reach lethal doses as a result of this combination.
Yes - Tylenol 3 doesn't have a fraction of the painkilling ability that Fentanyl does, but it does work better on some areas of the brain that Fentanyl and similar opiates don't (e.g., migraines). Like any combination though, even though you're opiate tolerant just using Fentanyl, you need to be aware of any increased side effects, especially respiratory depression.
ALOT of morphine
Using Coumadin (warfarin) and a fentanyl patch together can be done safely under medical supervision, but it requires careful monitoring. Both medications can increase the risk of bleeding; Coumadin is an anticoagulant, while fentanyl is a potent opioid that can affect respiratory function. It's crucial to consult with a healthcare provider to ensure appropriate dosing and monitoring to minimize risks. Always follow your doctor's guidance when using these medications together.
Feels good if you've got the tolerance for it... But fentanyl in the right dose works WELL all by itself.