There is a maximum known safe dose, at least for Strattera, so I would assume for Adderall as well. I would say, you know you’ve reached max benefit if either you reach that max. dose for you weight or however it’s calculated for your drug, or the adverse effects outweigh the benefits (e.g., you’re so anxious that it’s interfering with your concentration.) Although, it seems that doctors still up the dose even when the presenting side effects concern the patient, so I would want Dr. J’s opinion on my post.
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