Which of the following is NOT classified as a dangerous drug?

Ibuprofen is classified as a non-steroidal anti-inflammatory drug (NSAID) and is commonly used to relieve pain, reduce inflammation, and lower fever. It is available over-the-counter in many countries and is widely recognized for its therapeutic benefits in treating a variety of common ailments. In contrast, meth, LSD, and MDMA are classified as dangerous drugs due to their potential for abuse, addiction, and adverse health effects.

Methamphetamine is a powerful central nervous system stimulant, LSD is a hallucinogenic drug, and MDMA, known as Ecstasy, produces both stimulant and hallucinogenic effects. Each of these substances is associated with significant health risks and is tightly regulated under drug laws due to their potential for misuse. Thus, the distinction between these dangerous drugs and ibuprofen highlights the latter's established safety and medicinal use.