dexedrine?

has anyone taken this medication and if so, what are your thoughts on it? so i’ve tried generic adderall and ritalin and unfortunately ive had side effects with no benefits. my psychiatrist was ready to prescribe me generic vyvanse as my third and final option before switching to non-stims but she suddenly hit me with “im actually gonna prescribe you with another stim that another psychiatrist told me about that allegedly has the least side effects” that being dexedrine. i’m a little concerned because she did tell me she has never heard of this medication and i’d be her first patient trying this out which is making me feel like a lab rat. my local pharmacy doesn’t even carry this medication, they told me doctors rarely order them, so i had to have sent to a different pharmacy.