By now, many doctors and scientists can agree that weed won’t harm you — and in many cases, it can be medically therapeutic. But this certainly isn’t the case when it comes to other types of drugs, especially cheap ones that are created with an array of toxic chemicals and sold on the street.

This new video explains what the top 10 most deadly street drugs are and how they tear apart your body over time. The list includes the likes of bath salts, Whoonga, AH-7921, crystal meth, and purple drank.

Perhaps not surprisingly, Krokodil takes the award for the No. 1 most dangerous street drug. Known as the “flesh-eating drug,” Krokodil is widespread in poor regions of Russia, where addicts inject the deadly dose of opioids, codeine, and gasoline into their bodies. It’s a third of the price of heroin, which makes it appealing to addicts with low funds. The drug is named “Krokodil” due to its tendency to rot the skin from the inside out, making it scaly like a crocodile’s.

Whoonga, which has risen in use in South Africa in the past several years, is listed as the second most dangerous street drug — and bath salts are third. According to a 2013 report, bath salts led to over 22,000 emergency room visits in the U.S. in 2011. They’ve been shown to cause a variety of health problems like high blood pressure, suicidal thoughts, and psychosis.

Other drugs on the list include heroin and Flakka, a new type of drug that is made from the same chemicals as bath salts, which can also cause numerous life-threatening syndromes. Flakka involves excited delirium, psychosis, and hyperthermia — raising a person's core body temperature to a very dangerous level. Flakka was placed higher on the list than crystal meth, as research recently found that it’s even more addictive.

The full list is below:

1. Krokodil

2. Whoonga

3. Bath salts

4. Crack cocaine

5. Heroin

6. Flakka

7. AH-7921

8. Crystal meth

9. Purple Drank

10. Scopolamine