I?ve done it, I survived but I wouldn?t recommend it. If I remember correctly, I cut my Adderall use down to like just a morning dose. For me, Adderall at a reasonable dose can be great, but I can?t mix it with any other stimulants. Not even coffee, otherwise I?ll be shaking, sweating, even feel intense anxiety. It?s a feeling I hate and will lead to me taking more stuff to avoid that feeling (I.e. Xanax / benzos, clonidines/ blood pressure or beta blocker pills). Anyway, you definitely don?t want to mix in those things.
My personal advice: try to run the clen by itself. If she?s used to stimulants / amphetamines, she might be able to titrate up faster. That doesn?t mean skip the titration, she just might be able to move a little faster since she?ll be feeling very lethargic without the addies. In an ideal world, she could run clen for two weeks, go back to addies, and her tolerance would be low again and she could cut her dose back and still get the benefit. Of course the opposite is also possible. She dabbles and mixes them one day, likes it, can?t go back to just her meds. Just be careful, try to pay attention to her bp and resting heart rate, look at whether her hands are shaking and how badly, definitely don?t go above the suggested dose, and I personally would suggest not mixing them