lol that's great MrsD... i can't afford a smartphone though.
i don't take carnitine because the body makes it - and i believe i get enough of the essential amino acids.

Vit C is needed for synthesis and i made sure that is in my supplements, as i might not get enough of that.
on Depakote (VPA) i seem to recall Selenium as a depletee also, and possibly a couple other things? again haplessly lost the reference. this one is NOT in the garage either it was a on the net... sigh. i bought supps that included those things so, i'm ok but argh, now i wish i could remember or at least find the article again. i am a mess. my supps will not tell us because they include complementary nutrients also. i'm thinking Zinc may also be depleted? but i wouldn't swear by it.
i take a little Mg but that's coz i found early in my life that it helped with occasional bouts of tics and lessens my startle reflex to a passable level. I really can't remember if that's also involved with VPA because that's an
a priori requirement for me... i pilot the amount i take based on my startle reflex.
well now i'm thinking..............
if there is an app for smartphones, there is a database. and if there is a database, there is probably a website for depletions somewhere. we have to find it. if there isn't... WE CAN MAKE ONE. but most of all, if this collection of info exists in form of an app, why don't the doctors KNOW this stuff or look it up when prescribing!!! this is so infuriating!!!
~ waves ~