The deliberately low dose you begin on for the first few weeks, meant to let your gut adapt rather than to drive weight loss. Wegovy starts at 0.25 mg weekly and Zepbound at 2.5 mg weekly, each for four weeks before stepping up. Feeling little effect, good or bad, at the starter dose is normal and expected.
Related terms: Titration · Maintenance dose
See also: Your first month, week by week