The Most Addictive Over the Counter Drugs

4. Motion Sickness Pills

Depending on the type of pills sourced, motion sickness pills contain diphenhydramine (Benadryl) or dimenhydrinate (Dramamine). When taken in large enough doses, users feel high and can experience hallucinations. Based on individual body weight and tolerance, the amount needed to cause these effects varies.

For those who are aiming to achieve this result, some individuals take up to 40 pills at a time. In severe cases, these doses can lead to heart attacks, coma, and death. Long-term abuse results in significant side effects, including memory loss and liver damage.

3. Herbal Ecstasy

Sold and marketed as a legal high, this combination of herbs is banned within herbal supplements only. Users can purchase this drug in music stores, gas stations, online, and even in some health food stores. These individuals then swallow, snort, or smoke this herbal ecstasy to experience increased awareness and euphoria.

Unfortunately, users can overdose and lose their life when taken in large doses. The main ingredient is ephedra, a stimulant that can cause life-threatening reactions, including seizures. For anyone that suffers from a heart condition, anxiety disorder, or diabetes are at an increased risk of significant adverse effects.