Doxylamine

sleep · nervous · Oral

Doxylamine, a sleep compound. First-generation H1 antihistamine (ethanolamine class) with strong sedative effect. OTC sleep aid; significant… Oral half-life 10 h.

First-generation H1 antihistamine (ethanolamine class) with strong sedative effect. OTC sleep aid; significant anticholinergic burden — not preferred long-term in elderly.

PK: THE STORED ABSORPTION RATE WAS THE SOLVER DEFAULT WEARING A CITATION. A ka of 1.0/h is exactly what resolvePk substitutes when the field is ABSENT, and no source on this record states one. Removing it is NUMERICALLY A NO-OP — the resolver supplies the identical number — so no curve moves; what changes is that the record stops asserting an absorption rate it never measured. This is the same shape already found on a volume of 35 L, which is likewise the default at the seventy-kilogram reference. THE WIDER DEBT IS LEFT ALONE ON PURPOSE: twelve values account for 152 of the 276 authored absorption rates, but the other eleven are NOT the default, so deleting those would move their curves rather than leave them, which is the error this audit spent a batch documenting.

Pharmacokinetics

• Oral — t½ 10 h · F 100% · Vd 177 L

Sources: PMID:2743704