Dehydration, talking out of line, uncontrollable excitment and taking on to much.
Since being on Vyvanse my lithium side effects have subsided, all i notice is occasional tremors.
I notice the side effects from my Vyvanse are significantly worse when under slept, dehydrated, caffinated, even small portions of alcohol and hunger.
I've been taking vyvanse for 3 months. started at 30mg then 40 after 2 weeks. I just lowered it to 30 mg last week as a result of high anxiety.