Coffee plus Vyvanse makes me a mess. Did you drop caffeine or drop the extra cup?

Coffee plus lisdexamfetamine can feel like too much stimulation for some people, but that does not by itself prove which cup to drop or that the ADHD capsule is the wrong product. Additive stimulation, jitters, and sleep disruption are the practical concern. There is no official 10am caffeine cutoff on ADHD labels. If the change is persistent, distressing, or affecting daily functioning, bring a brief timeline to the prescribing clinician rather than changing the dose independently. References: https://pdf.hres.ca/dpd_pm/00075816.PDF https://www.camh.ca/en/professionals/treating-conditions-and-disorders/adult-adhd/adult-adhd---treatment/adult-adhd---pharmacotherapy https://www.nhs.uk/medicines/methylphenidate-adults/