Why does heroin make you throw up?
361592
As "Dude" said, heroin--as well as many other opioid narcotics--latch onto receptors that, unfortunately, frequently cause nausea and vomiting.
667589
Please go to the ER immediately.  Symptoms of an overdose may include slow breathing, seizures, dizziness, weakness, loss of consciousness, coma, confusion, tiredness, cold and clammy skin, small pupils, nausea, vomiting, and sweating.
467629
1) Vomiting means emptying your stomach by a strong gag and retch that leads to throwing up. \n\n2) Vomiting is the forceful expulsion of the contents of one's stomach through the mouth. Although it has probably evolved as a mechanism for expelling ingested poisons, vomiting may result from many causes not related to poisoning, ranging from gastritis to brain tumors, or elevated intracranial pressure (ICP). The feeling that one is about to vomit is called nausea. It usually precedes vomiting, but it does not always lead to vomiting. Antiemetics are sometimes necessary to suppress nausea and vomiting, and in severe cases where dehydration develops, intravenous fluid may need to be adminstered.
262408
When someone uses heroin regularly, that is, every day for more than a few weeks, they develop a physical dependence on the drug. When they stop using heroin, they experience withdrawal effects. These may include may include irritability, anxiety, muscle cramps, abdominal pains, chills, nausea, diarrhoea, sweating, sniffing, sneezing, weakness and insomnia. They begin within 12 hours of not using, peak after two to four days, and subside after about a week. Getting through this period, after which the body is no longer chemically dependent on heroin, is called detoxification, or 'detoxing'.
448886
That you're sick.  And if you need a good way to throw up, take a little bit of Carmex (that lip balm stuff) and "accidentally" swallow some.  30 minutes later you'll have the vomit to prove the sickness.\n\nOther than that, the only real good excuse is family emergency.
927524
it can cause acid reflux
432905
Why is it that when I drink gasoline, I puke my spleen?
387793
Once I saw a python throw up, and it immediately stunk up the entire room. It looked like there was some kind of hair or something in it. And it smelled like a mix of throw up, rotten meat, and an outhouse after someone just had a bad case of mud-butt.
36178
Well, after throwing up you are likely to become healthier because you have thrown up stomache bile that has been rotted and you can`t hold it so you throw up. One thing you should never do is swollow your on throw up just let it out if you don`t it will only get worse and can sometimes lead to dangerous symptoms.
42690
I love the previous answer! But to put it more clearly, it enables you to vomit.
687397
Heroin abuse is associated with serious health conditions, including fatal overdose, spontaneous abortion, collapsed veins, and, particularly in users who inject the drug, infectious diseases, including HIV/AIDS and hepatitis. The short-term effects of heroin abuse appear soon after a single dose and disappear in a few hours. After an injection of heroin, the user reports feeling a surge of euphoria ("rush") accompanied by a warm flushing of the skin, a dry mouth, and heavy extremities. Following this initial euphoria, the user goes "on the nod," an alternately wakeful and drowsy state. Mental functioning becomes clouded due to the depression of the central nervous system. Long-term effects of heroin appear after repeated use for some period of time. Chronic users may develop collapsed veins, infection of the heart lining and valves, abscesses, cellulitis, and liver disease. Pulmonary complications, including various types of pneumonia, may result from the poor health condition of the abuser, as well as from heroin’s depressing effects on respiration. Heroin abuse during pregnancy and its many associated environmental factors (e.g., lack of prenatal care) have been associated with adverse consequences including low birth weight, an important risk factor for later developmental delay.
511221
probably puke your guts out.  it could also kill you.
649892
It means it tends to make you want to vomit.
707822
it's possible, especially if you've injured your back before, or have a weak back.  the jerking and contracting of the muscles all over your body when you vomit could trigger it.
624390
The anesthesia will make you vomit. If you vomit while asleep you could aspirate it and die.
523776
Heroin is an illegal, highly addictive drug. It is both the most abused and the most rapidly acting of the opiates. Heroin is processed from morphine, a naturally occurring substance extracted from the seed pod of certain varieties of poppy plants. It is typically sold as a white or brownish powder or as the black sticky substance known on the streets as "black tar heroin." Although purer heroin is becoming more common, most street heroin is "cut" with other drugs or with substances such as sugar, starch, powdered milk, or quinine. Street heroin can also be cut with strychnine or other poisons. Because heroin abusers do not know the actual strength of the drug or its true contents, they are at risk of overdose or death. Heroin also poses special problems because of the transmission of HIV and other diseases that can occur from sharing needles or other injection equipment.
58126
Sometimes you need a lech to suck out the poison.\nIt is cost effective. But bleeding, purging and vomiting do have there consequences!!