At this point in understanding exactly what dua is, it would be easy for someone from a Christian background to think that dua is prayer. Dua certainly holds certain similarities to the prayer of Christians, however it should not be confused with what Muslims call prayer.
No, Vyvanse is not yet available as a generic. Adderall, which is very similar to Vyvanse, is available as a generic. You may want to talk to your physician about whether it would be a good alternative for you if you are looking to save money on your medication.
Vyvanse is manufactured by Shire US. Vyvanse is currently protected by a patent that prevents any generic Vyvanse from being manufactured in the United States. The first patent for Vyvanse currently expires in June 2023. This is the earliest date that a generic version of Vyvanse could become available.