r/Concerta•
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concerta 18 mg first day

Dosage/ ℞ question 💊

21F. i took concerta for the first time ever today. the doctor prescribed me 18 mg. the first 30 mins, i felt a bit sleepy, but not as sleepy as when i take quetiapine. the next 1-2 hours, i feel more focused in some ways, and i can remember things better. i feel more alert, and i can even read whole sentences now.

now that it's been around 6 hours, these effects continue but it's not as 'mindblowing'? my head is still a bit noisy but it's much quieter. i can focus a lot better but not fully. i think the meds work but they can work better, if that makes sense. i'm not motivated to do my activities, either.

i don't know, should give it one month? i can't meet my doctor until the next month so i won't know for sure. i made sure to drink a lot of water as well.

since it's my first time, should i wait a few days to feel its full effects? or am i supposed to feel the full effects on the first day, and this is just not my right dose?

thank you so, so much.

Posted Mar 8, 2026, 1:13 PM UTC

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