How Can I Increase The Absorption Of My 60mg Vyvanse?

how can i increase the absorption of my 60mg vyvanse? I have heard of things like Tyrosine and L-Tyrosine. will these help increase absorption? because i take 60mg in the morning at 6am everyday and would like it to be mostly absorbed by the time i get off work. I want its full effects while I am at work and sometimes it feels too spread out over the day. unfortunetely I still feel the physical anxiety, depression and various negative symptoms far into the night maybe until around 10 at night. I have been taking vyvanse for almost 4 years now and 60mg seems to be what works for me and my doc agrees. I have tried adderal and it doesnt work as well as the vyvanse. too much side affects. also i have heard of something called piperine that increases absorption of other drugs. will it help absorption of vyvanse too?