Morphine Side Effects

Since the main charter is using morphine as a way to ease this pain that he is suffering from after his experience in the pacific, I wanted to make sure that I represented the effects of Morphine appropriately.
Morphine can occasionally create hallucinations. The patient can feel drowsy if he is overdosing.

According to drugs.com (2016), there are several side effects that occur when taking morphine;

• Abdominal or stomach pain 
• blurred vision 
• bulging soft spot on the head of an infant 
• burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings 
• change in the ability to see colors, especially blue or yellow 
• chest pain or discomfort 
• confusion 
• cough 
• decreased urination 
• dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position 
• fainting 
• fast, pounding, or irregular heartbeat or pulse 
• headache 
• hives, itching, or skin rash 
• increased sweating 
• loss of appetite 
• nausea or vomiting 
• nervousness 
• pounding in the ears 
• puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue 
• severe constipation 
• severe vomiting 
• shakiness in the legs, arms, hands, or feet 
• shortness of breath 
• slow heartbeat 
• sweating or chills 
• wheezing 
• cold, clammy skin 
• flushing or redness of the skin, especially on the face and neck 
• irregular, fast or slow, or shallow breathing 
• lightheadedness 
• loss of consciousness 
• low blood pressure or pulse 
• pale or blue lips, fingernails, or skin 
• pale skin 
• pinpoint red spots on the skin 
• pounding in the ears 
• shakiness and unsteady walk 
• unsteadiness, trembling, or other problems with muscle control or coordination 
• unusual bleeding or bruising 
• very slow heartbeat

I had elements of these symptoms in my mind when I was designing protagonist's morphine endosed appearance.

At the moment, I'm needing to revisit this design as he only partially shows  some symptoms of morphine side effects.
 I think it would be appropriate to suggest that he could be making overdoses.
With that in mind I found these additional symptoms that occur when he is overdoing on morphine,

• Constricted, pinpoint, or small pupils (black part of the eye) 
• decreased awareness or responsiveness 
• extreme drowsiness 
• fever 
• increased blood pressure 
• increased thirst 
• lower back or side pain 
• muscle cramps or spasms 
• muscle pain or stiffness 
• no muscle tone or movement 
• severe sleepiness 
• swelling of the face, fingers, or lower legs 
• weight gain

In the final comic, I was panning on including a section where the main protagonist takes the drug and we see that the effects cause these haunting shadows to disappear while he is surrounded by faint cloud of multiple saturated colours to show that he is defended by a barrier.
In the Dagon comic adaption featured in  Lockwood's The Lovecraft Anthology (2011) ,there is a use of saturated water colors that give the impression of the ways hat morphine can alter your vision to see certain colours. To help connect it with madness the imagery does show chaotic elements like how some ink blots drip down into the next panel.

Images from the Lovecraft Anthology Volume 1

Here is a scene form my comic which will be the protagonist taking morphine to allow him to be free of haunting imagery.

Comic Page Sketch

Refined Comic Page

References

Drugs.com, 2016. Morphine Side Effects in Detail - Drugs.com. [online] Available at: http://www.drugs.com/sfx/morphine-side-effects.html [Accessed 27 Jan. 2016].

Kaye, P. n.d. Hospice World. [online] Hospiceworld.org. Available at: https://www.hospiceworld.org/book/hallucinations.htm [Accessed 27 Jan. 2016].

Lockwood, D. 2011. The Lovecraft anthology. London: SelfMadeHero.