Which Medicine Makes You Less Nauseated? Morphine or Fentanyl?

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ive been prescribed both and i thought fentanyl was bad on the nausea and i had taken morphine before with no problems but then i tried it sunday night and thought i was dying.. was sick for 24 hours!! im not sensitive to medication usually and it usually takes enough to kill a horse to phase me but i have heard fentanyl is really bad on nausea no matter whom it is and i was constantly sick with that medicine.. so is morphine usually just as bad?? i would think that if it didnt phase me for a whole day that consisted of a pill every 8 hours i would have gotten sick then.. so im wondering if it was something i ate that night instead of the morphine.. too scared of dealing with another episode to take it though lol which is more likely to make you nauseated?? please share your personal experiences if possible.. none of the medicine websites or books ever say how i react since im a mutant.. lol