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Practice · Dosing & titration · continued

Reaching a dose and staying there for a year: a longitudinal note — does this still hold? posts 31–40

This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1 · go to the accepted answer.

GC
glossary_checkTL2Member25 Aug 2025#31
s.cardoso, post #17: Worth separating two things that post #15 runs together. The maximum studied dose is a fact about the trial and not a ceiling on the molecule. It is also the last point at which anything is known, which is the reason to treat it as one. This is the sort of thing that ought to be settled and apparently is not. Go to post

I had written a reply contradicting post #29 and deleted it. Here is what survived.

Dose and effect are not linear across the studied range for every compound in this class. Assuming a doubled dose gives a doubled effect is the reasoning error behind most disappointment.

The strength of my opinion here exceeds the strength of my evidence.

25 likes in reply to #17 11mo
AK
an.kirchnerTL227 Aug 2025#32

Nothing to add on the substance. Thank you for taking the question at face value.

12 likes 11mo
EF
erratum_fileTL3Regular29 Aug 2025#33

The arithmetic of an intermediate dose: if the label says 1.0 mg and 2.0 mg, a dose strictly between them is off-label by definition. Some people compute it anyway. The reasoning is pharmacological — e.g., "I will split the difference between steps" — but it is reasoning from theory, not from evidence.

4 likes 11mo
HJ
h.jansenTL231 Aug 2025#34
G
GEldridgeTL3Regular2 Sep 2025#35

Coming back to post #33, because the follow-up matters more than the original answer.

Escalating before steady state means you are judging a dose you have not yet fully experienced. That is the whole argument against compressing the schedule and it is a good one.

The part I am sure of is shorter than the part I have written.

18 likes 11mo
AK
a.krastevTL24 Sep 2025#36

If symptoms reset at each step, that is the expected pattern rather than a sign that the previous adaptation was imaginary. Every dose increase is a new exposure.

7 likes 11mo
DB
d.bramleyTL3Regular6 Sep 2025 · edited#37

A missed dose in a weekly schedule is not a trough to chase. With a week-long half-life you are perturbing a slowly moving average, and the labelling for licensed products in this class says take it if the next dose is far enough away and skip it otherwise.

Flagging that the sources on this are thinner than the confidence in the thread suggests.

1 like 11mo
AN
a.nascimentoTL27 Sep 2025#38
a.krastev, post #36: If symptoms reset at each step, that is the expected pattern rather than a sign that the previous adaptation was imaginary. Every dose increase is a new exposure. Go to post

This follows post #37 rather than contradicting it.

The starting dose in most of these programmes is a tolerance step and produces little effect by design. Judging the compound at the starting dose is judging the wrong thing.

The number is defensible. The precision I gave it is not.

0 likes in reply to #36 11mo
M
MakinenTL2Member9 Sep 2025#39
e.pires, post #13: Steady state means the plasma concentration is stable from dose to dose. That happens around 4 to 5 half-lives. Before that, the concentration is rising with each dose. Escalating before steady state means escalating on incomplete information about the dose you are on. A partial answer, offered because a partial answer beats none. Go to post

Grateful for the specificity. Vague answers to this question are what sent me looking.

13 likes in reply to #13 11mo
SR
s.radichTL211 Sep 2025#40
i.rasmussen, post #5: That is a fair summary of where the discussion has got to. Go to post

Building on post #37 rather than restating it.

Titrating on tolerability rather than on the calendar: some people escalate when they tolerate a dose well, others escalate on the prescribed schedule regardless. The published trials used a calendar-based schedule. Tolerability-based escalation has no formal evidence base but is not uncommon in practice.

4 likes in reply to #5 11mo

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