Negative effects of morphine (INFOGRAPHIC)

How does morphine affect you negatively? More on the adverse side effects of morphine here.

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Adverse effects of morphine

On the behavior

  • euphoria
  • fatigue
  • inattentiveness
  • lethargy
  • mood swings
  • poor performance

On the brain

Negative effects of morphine (INFOGRAPHIC)

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  • depressed consciousness
  • general psychomotor impairment
  • possibility for seizures
  • slowed reaction time

On the psychology

  • abnormal thoughts
  • delirium
  • disconnectedness
  • disturbed sleep
  • mental clouding
  • severe depression

On the sex and sexuality

  • decreased sexual interest
  • difficulty with conception
  • impotence
  • loss of sexual ability

On the body response

  • analgesia (inability to feel pain)
  • impaired respiration
  • reduced gastrointestinal motility
  • slower heart beat

On the general health

  • change in ability to see colors
  • increase in hepatic enzymes
  • painful urination
  • vision problems
  • weight loss

Serious adverse side effects

  • collapsed veins
  • death
  • endocarditis (inflammation of the inner lining of the heart)
  • gradual shutdown of respiratory system
  • liver damage
  • mortality due to worsening of cancer
  • reduced cellular immunity
About the author
Lee Weber is a published author, medical writer, and woman in long-term recovery from addiction. Her latest book, The Definitive Guide to Addiction Interventions is set to reach university bookstores in early 2019.


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  1. Was on large dose VA prescribed morphine for 12 years. Stopped taking it Sept 2017
    Wondering now what long term use does to mind and body after the fact?


  2. I’ve had 5 back surgeries over 17 years, with two of those surgeries failed. I’ve also been on hydrocodone 10/325 for those 17 years with Fentanyl 100 mg thrown in there for about 5 or 6 years. I weaned myself off Fentanyl but am still taking hydro 4 times a day.. One of those failed back surgeries gave me neuropathy in both of my feet. I can’t hardly walk, sit or do anything but lay in bed.. I know I’ve got kidney failure and a radiologist saw cirrhosis of the liver in an MRI I had done in 2014. I don’t know how I can live if they pass this new law against narcotics. Do you have any suggestion?

  3. My Mom is on oral morphine through hospice (severe back arthritis) she is 92. I’ve noticed she is very insulting toward family members and isn’t factual about things and mean at times (verbally) is this normal?

    1. Hi Annie. I suggest that you consult with her doctors. Morphine may be the cause on changing behaviors.

  4. Lol how does using morphine cause HIV/AIDS? I was reading along and thinking wow morphine can cause a lot of unwanted side affects both short term and ling term ,but then I got to the one that states it cause HIV/AIDS and I just laughed. Your site is comparative to the movie REEFER MADNESS that was made to scare people away from smoking pot. What a crock of crap. Thanks for wasting everyones time here.

    1. Hi Kim. Transmission of diseases such as HIV/AIDS and hepatitis B and C among drug abusers who use needles to inject the drug is possible.

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