Meth, a crushed up prescription medication of some kind, ketamine, pcp, and others. The most likely alternative would be meth I believe.
A headache is the last worry a cocaine addict will have
yea there is stop snorting it up and go to a rehab clinic and get some help
No. Cocaine can only enter into a person's body through snorting it (inhaling it through the nose), smoking it, or injecting it. Cocaine does not enter into a person's bloodstream through close bodily contact with someone who has recently used it. Cocaine enters the bloodstream very quickly when it is inhaled; it goes directly to the brain. It also exits the body very quickly; the cocaine "high" lasts only about 20 minutes. The only way a urine sample can be positive for cocaine is if it is directly put into the body by smoking it, snorting it or injecting it.
It varies depending on the person. The average cocaine line is usually about 0.1-0.2 grams - which is enough to feel the full affects of cocaine. However, some people may not require as much as 0.1-0.2 grams in order to get high, while another person will need more to get high. The more a person uses cocaine overtime the more their body becomes immune to cocaine, meaning they will need more cocaine in order to get high. Some people who have been snorting cocaine for many years will need like 0.4 grams+ in order to get high. The trick is to separate the cocaine into lines and find out what YOU need in order to get high.
You either would have taken it voluntarily or someone slipped it into something you were smoking (like a joint.) Urine tests don't lie. Bars and wild parties are notorious for 'date rape drugs' as well as slipping other drugs into drinks, getting the person so drunk they are talked into snorting cocaine, or, the person taking it is in denial.
Yes, if you are injecting it with dirty needles. I have also heard that AIDS can be spread through the straws people use to snort cocaine. Cocaine makes your nose bleed, so if one person gets their blood on the straw, and then passes it to the next person, who also has a nosebleed, AIDS can be spread. This is fairly unlikely -- I mean, would you put something that had someone else's blood on it up your nose? But if you're really worried, then bring your own straw, and don't share it with anyone.
It depends on the person, everybody snorts a different amount. Basically, some people can snort cocaine off a coin or from the top of their hand, which is normally only about 0.05 grams, or even less. Some people can cut a gram into about 5-10 lines, which means they will be snorting about 0.1 to 0.2 grams per line. However, with some people they need to snort about 0.5 grams per line before cocaine affect them. A gram of cocaine = £30 ($48) to £50 ($80), so depending on who you are, cocaine can work out cheap or be pretty expensive for you.
Coca leaves ... though I bet a clever person like you already knew that one. In addition to being a cocaine precursor (and hence a controlled substance) it's also a cocaine metabolite, so the sewage of a crack house would probably contain some.
snort it, smoke it, or inject it
Cocaine will stay and therefore be detected in a person's system for different periods in different organs in the body. In a user's bloodstream cocaine may stay in the user's bloodstream for up to two days. Cocaine may stay in the user's urine for one to three days and may stay in a user's hair for up to three months. It is interesting to note that while testing for substance abuse most recognized laboratories will not test for the drug, like cocaine, but instead will test for the metabolite of the substance. In the case of cocaine the laboratory will test for 'benzoylecgonine'. This may remain in an addict's bloodstream for up to thirty days.
Cocaine is a stimulant. Hence, small impulses are magnified into larger impulses. A person on cocaine feels very energetic, and wants to move around and do things.
I don't understand what you are asking, but crack cocaine is not snorted. Regular cocaine can be snorted, but not crack cocaine. Crack is smoked.