My current knowledge is Wellbutrin (bupriopion) XL which is said to be actually roughly 24 hrs
That is the extent of my knowkedge or understanding of the longest-acting I am [currently] aware of.
I believe there is a newer ADHD med that is like tri-Adderall (16-18 hours) but I am not confident in those figures since that is not available in my country nor would I likely self-advocate to be prescribed such a long-acting substance
Since the question implies any drug,
I’ve known people get drug based contraceptive implants that last years
If you’re specifically talking about ADHD meds (Wellbutrin can be used for it), then mydayis is taken at night and is timed to start releasing in about 8 hours and is supposed to last 16 after that. Never tried it myself, just know of it.
Mydayis
I think that was it
If not limited to ADHD, there’s at least an extended-release formulation of risperidone (“uzedy”) with a prescription interval choice of bimonthly (Q2M).
Thats crazy long. Is that the standard of care across the world (long acting antipsychotics)? I’ve heard American in particular deals with schizophrenia in particular in a vastly different approach to say like Europe and my sense I got was their care/treatment/management was costlier with worse outcomes for basically everyone involved 'cept pharma and private prisons