Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Mugs
Tees
Hoodies
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
1. Mesembrine is an alkaloid present in Sceletium tortuosum. 2. It has been shown to be an extremely potent serotonin reuptake inhibitor, active at dosages as low as 100μg (micrograms). 3. It has also been shown to be a PDE4-inhibitor.3 Mesembrine may contribute to the antidepressant effects of kanna.
Text fits
Save
Cancel