If you suffer from addiction, you should avoid any substance that is going to be addictive. However, some substances are more addictive than others. It’s good to know what the most addictive substances are.

1. Heroin

It’s no shock that heroin is the world’s most addictive substance, hands down. The drug is known as the “king of narcotics” or the ultimate opiate. The drug has the ability to quickly penetrate the brain, which results in the “rush” heroin addicts will experience or the surge of intense euphoria. Like other opiates, heroin tricks a person’s brain into stopping the production of natural feel-good chemicals. After a while, the person who is addicted to heroin has to use the drugs in order to feel good.

2. Crack cocaine

Crack is actually the most potent form of the drug, cocaine. It also acts like heroin, causing an excessive amount of dopamine to flood the brain, making it one of the most addictive and dangerous substances in the world. The effects of smoking crack cocaine are so short and yet so intense that the person who uses crack cocaine is likely to do it over and over and over again, making it extremely addictive.

3. Nicotine

This one may surprise some folks, but anyone who has ever tried to quit smoking is not surprised, I’m sure. The National Institute on Drug Abuse conducted a study that showed that of the 35 million smokers who want to quit each year, over 85% of those who try to quit by themselves will relapse within a week.

4. Methadone

Methadone is a controversial drug. It is often used in a clinical setting to get people off heroin and other opiates, and it can be seen as beneficial in that way. Some people feel, though, that they are just substituting one opiate for another, and trying to get off methadone can take months of painful withdrawal symptoms whereas getting off heroin only takes three days of withdrawal.

5. Methamphetamine

Methamphetamine imitates the chemicals of dopamine and norepinephrine, which is a neurotransmitter that is responsible for energy. It is not difficult to imagine why this substance is so addictive. Using methamphetamines can destroy the production of these chemicals in the brain, increasing the need to keep taking it.

No matter what substance you are addicted to, you need to realize that addiction is a disease that can be treated. Treating the disease of your addiction may involve medical detoxification so it is important to find a rehabilitation facility that will help you through the detox process.