Ritalin is one form of methylphenidate - a short-active version. Formulations with longer dose/release profiles exist - Concerta XR and Elvanse/Vyvanse are the

Ritalin is one form of methylphenidate - a short-active version. Formulations with longer dose/release profiles exist - Concerta XR and Elvanse/Vyvanse are the same active stimulant (methylphenidate), but spread over the course of ~12 hours. Personally I've found that Concerta has a ramping up and ramping down, with peak effects kicking in around 4 hours, whereas Elvanse kicked in relatively quickly at the same constant level. Having to take ritalin (and adderall) multiple times a day with the risk of crashing in between sounds like a nightmare, and I'm glad at least here in the UK one of the first thing psychiatrists suggest trying is low dosages of the longer-acting methylphenidate derivatives. It takes a lot of messing around with different meds and formulations to find one that works for you. It's like incredibly individual/personal; people seem to have wildly different responses to the different families of stimulants, different dosages, different delivery methods, different times of day etc etc. Takes a lot of educated effort. It really sucks how it's so damn variable between countries or even within countries - national policies on ADHD meds and amount of knowledge your average doctor has in each country on those meds. Wildly and unhelpfully variable.