Hi sir, armour thyroid
is derived from porcine thyroid gland. it contains both T3 & T4 . it is known to have some allergic reactions. armour being best is not absolutely documented. levothyroxine
, a synthetic preparation is comparable with no allergic reactions.vyvanse
is not a reported side effect. you cannot be taking the two drugs together. you must take your thyroid medicine early morning empty stomach first and then after 30 -40 min take vyvanse. regards!