GLP-1 side effects follow the dose schedule, not the calendar

Published: 2026-08-01 · Last reviewed: 2026-08-01 · Methodology v4.1 · News
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Gastrointestinal effects cluster around each dose increase. In STEP-1, nausea affected roughly 44% against about 18% on placebo, and about 7% discontinued.

Reports concentrate in the days after each step up rather than spreading evenly. A person can be four months in, feel settled, step up and have a difficult week — that is the pattern the titration schedule anticipates.

In STEP-1, nausea affected roughly 44% of participants against about 18% on placebo, and about 7% discontinued for an adverse event against about 3%.

The commercial angle: approved labelling permits staying longer at a tolerated dose, and a prepaid multi-month plan commits a patient through exactly the window where discontinuation concentrates. Ask what is refundable before prepaying.

Week-by-week detail: side effects by week.

Filed by the Peptides Editorial research desk. Corrections: the corrections log.