Whats the most addictive drug there is?

Heroin

http://en.wikipedia.org/wiki/Controlled_Substances_Act

Comparison of addiction vs. physical harm for 20 drugs:

I'd have to say either heroin or crack. Heroin probably creates the worst physical withdrawal symptoms, they can be enough to kill someone- or at least make them wish they were dead.

Crack is really addictive on another level. With crack the users high so intense and so short lived that it quickly leads them down a bad road on their quest to get more crack.

Meth is also very addictive, but the reason I hesitate to say that it is the worst is the lack of life-threatening physical withdrawal. Also, it is possible (though not probable) to be a functioning addict on meth.

I would go with heroin, and crack taking a close second... both very dangerous drugs that have cause a lot of damage to peoples lives, more than many others... I also think it would be more difficult to function when addicted to these than to any others.

Herion. Your body is phsically addicted to it in 6 seconds if you shoot it, and you don't even feel the high for 10 seconds. Your body is dependant on it before you even know if you like the way it feels.

I believe it is crystal meth. From the documentaries I've seen on meth I would definately say that or heroin.

in all honesty i guess it would depend on the person as for me i was addicted to crack for yrs. but and 6 yrs out of it and i tried heroin one time in my life but thats all it took for me to know if i kept doing it i liked it so much i would have died on it so personally i belive heroin is moe addicting

I am a biology major in college and have done extensive research on this topic for a senior research paper and through all the stuff I've read every drug effects the brain and body differently and so there is no easy answer. I have seen first hand what drugs have done as well through friends and know that heroin is extremely addictive and the withdrawal symptoms are hell and many times wish you were dead. I had a group of friends and 3 of them died over a summer a couple summers ago due to heroin overdose. Heroin is no joke. If you want to ruin your life, try heroin and it will!!! You get physically addicted to heroin faster than any other drug, but cocaine is extremely addictive and does things to your mind that makes it extremely addictive. From what I've seen meth. is extremely destructive to the brain, but don't know much about meth. but seems that it is very addictive as well.

Pussy. Cause NO ONE can live without it.

Actually you are all wrong. nicotine is the most addictive drug. it depends on certain factors;

Withdrawal -- The severity of withdrawal symptoms produced by stopping the use of the drug.

-Reinforcement -- The drug's tendency to induce users to take it again and again.

-Tolerance -- The user's need to have ever-increasing doses to get the same effect.

-Dependence -- The difficulty in quitting, or staying off the drug, the number of users who eventually become dependent

-Intoxication -- The degree of intoxication produced by the drug in typical use.

though tou would think it is heroin- i did.
Most addictive to less addictive;
1. Nicotine
2. Heroin
3. Cocaine
4. Alcohol
5. Caffeine
6. Marijuana

And if you have doubts:

http://www.druglibrary.org/schaffer/Library/basicfax5.htm

Love? lol. This is a good article explaining it.
http://msn.chemistry.com/msnarticles/Why-love-feels-so-good?trackingid=508259&bannerid=2002322?GT1=26001

Sex. Dick and Pussy is the most addictive

actually it is a legal one. it is nicotine. as far as the illegal ones, meth

Ive done every kind of drug you can think of, from weed, to xtc, K, boy, gurl, the holy grail of opiats "oxymorophone" meth, crack, xanax, ritalian, adderal, percs, vics, codiene, lien, mushrooms, acid, oxycontin, loratabs, valium, ive done alot of drugs. Im 22, and im at the point in my life where its been around 6 months since Ive done any besides drink, not because im trying to stop, just because ive been busy with college and work. I would like to say what drug is most addictive, doesnt depend on the drug AT ALL. It depends on the person. Me personally out of everything I perfer opiates, but at the same time, my very best friend whos done everything with me has only IVed one thing in his life, oxycontin. He said it was good, but he wasnt really interested. He likes meth alot more. I know people that love cocaine and no drug can take its place, I know people that would rather snort a line, then have $1000 worth of any other drug. It all depends on who you are as to what you LIKE. Ive watched xanax ruin peoples lives in ways I thought only a "hard" drug could. I know at least 3 people who would laugh if you told them shooting herion or smokeing crack is as addictive as xanax. It depends on you as to what high you want to get, and if you continue to get it then that makes you an addict. I mean its said that acid isnt addictive at all, but one of my friends does it over and over in a manner I would consider very much so addictive. If your asking the question what drug is the most addictive, your asking the wrong question, I would say either your thinking of selling drugs, or else you want to try something "harder" but not the hardest. If you smoke pot and notice it becomes a habit take that as a sign that ALL further drug useage in your own case will be very addictive. Me and my closest friends all have our favorites, but not all of us are doing well. I have a job, a car, a girl, and a 4.0 GPA. Someone I used to be best of friends with has 10 years in prison. Drugs in general really are bad, and the only way you can find out if you can "handle" them is to do them, which is a VERY BAD IDEA. I am one of the lucky few me and my best friend both enjoy "hard" drugs, but both of us rarely do them. Some people try the things Ive done once and make it a life time trip. Dont try drugs, and if your going to all I can say is find someone who knows about what your planning on takeing and ask them everything you can.

Pleasure. Anything that avoids pain is potentially addictive. People who need drugs or any kind of "input" to feel good, are people who can't get enough pleasure from "natural" drugs that need no "input", like love or sex. And if they do get enough pleasure from it and still do drugs, they simply are more needy than the average individuals. Addicts to drugs are people necesserally trying to avoid the void inside them. Try facing the void and filling it with good real feeling for yourself and others, for it can be pretty addictive!!! ;)

All round most addictive = Nicotine

Most addictive illegal drug = Smoked Meth "Glass/Ice" (meth can also be injected "Crystal Meth" but this way is not as addictive)

I'll say 4 a lot others heroin. 4 me it's weed. =)