2-FA/Summary
Harm potential 
-
- Moderately addictive with a high potential for abuse
- Exact toxic dosage is unknown
Tolerance 
-
- Full tolerance is reached develops with prolonged and repeated use
- Decreases to half after 3 - 7 days
- Returns to baseline after 1 - 10 days
- Cross-tolerance with all dopaminergic stimulants
Physical effects 
-
- Abnormal heartbeat
- Constipation
- Dehydration
- Diarrhea
- Difficulty urinating
- Frequent urination
- Headache
- Increased blood pressure
- Increased heart rate
- Increased perspiration
- Muscle cramp
- Muscle twitching
- Seizure
- Stomach cramp
- Teeth grinding
- Temperature regulation suppression
- Temporary erectile dysfunction
- Vasoconstriction
