the difference in script volume between May and June was minuscule and was well within normal seasonal variation.
Not sure that I agree with you (though I surely don't know what the "seasonal variation" is). The total scripts have clearly stopped going up, as they had through the beginning of this year. Also, MNTA market gains which continued through April clouded the decrease in total scripts. After peaking in April, we are returning to the February levels. Is that seasonal? Maybe, but more likely something else is happening. I don't consider ~5% decrease minuscule. Clearly larger declines may be coming from new competition - or not. See numbers below.