1. IOC officials said cathine is a common drug in east Africa. 2. The corresponding alcohol, cathine , is a less powerful stimulant. 3. Cathine and cathinone are NRAs found naturally in " Catha edulis ".4. What remains is a substance called cathine , which is less potent but still illegal. 5. Under international rules, a positive test for cathine warrants a two-year ban. 6. Kenyan boxer David Munyasia was sent home Tuesday after testing positive for the stimulant cathine . 7. Cathine is a Schedule IV controlled substance.8. The Olympic Games Committee bars cathine in concentrations of over five micrograms per milliliter in urine. 9. Like amphetamines, cathinone, and ephedrine, cathine acts as a norepinephrine releasing agent ( NRA ). 10. The metabolites of cathinone, cathine and norephedrine also possess CNS stimulation, but create much weaker effects.