At least 2 days.
Can you mix methadone with fentanyl
yea you can but it might not work that good.
if you rub it on your gums and are not opiod tolerant; 1-2hrs maxium, re rubbing fentanyl opiod analgesic onto gums.
None! My God! Eating a fentanyl patch could kill you!
yes
yes
of course
Yes, aspirin has no known significant drug interactions with fentanyl
How long does it take to work
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.