Withdrawal symptoms have been reported with abrupt or rapid discontinuation. The most commonly reported withdrawal symptoms
include fatigue, stomach pain or nausea, dizziness
/light-headedness, tremor, chills, sweating, and incoordination. Other reported symptoms include dysphoric mood, impaired memory, insomnia, irritability, shock sensations, headache, and aggression.
Withdrawal symptoms usually begin 1—3 days after abrupt discontinuation but should stop after 1-2 weeks.