- DrugDigest: Miraa
 - Describes the chemicals in miraa, also known as khat, its effects on human health, and interactions with other drugs. - Everything About Qat/khat/kat
- Covers khat's traditional usage, cultivation, packaging, and legal status plus its effects on humans and treatment of khat dependency. From the University of Pennsylvania.
- Khat Plant
- Describes the Khat plant, including its cultivation, usage, effects on humans, legal status in some countries, and photos.
- U.S. Drug Enforcement Administration: Khat
- FAQs about Khat, also known at qat or miraa, the stimulant drug of African origin.
- Wikipedia: Khat
- Khat pharmacology, history, cultivation, uses, and links to relevant sites. Also has legal control of the stimulant in a few countries.
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