Pupils. Excessive constriction of the pupil. Also known as “pin-point pupils”.
Skin color is cool and pale, blue, ashen. Fingernails and lips have a blue / ashen tinge (not getting enough oxygen)
Gurgling (body attempting to get oxygen). Breathing is slow or stopped. Adults normally breathe 15-20 times per minute.
Sweating is a symptom or side effect of opioid overdose.
Heartbeat has slowed or stopped. Adults have a normal heart beat between 60-100 beats per minute.
Unresponsive when you call their name, shake them, rub your knuckles on their upper lip or rub their sternum (rub your knuckles hard up and down their breastbone).