Skip to content
GLP-1 Decoder

Semaglutide Not Working? The Checklist, in Order

Results vary a lot by person. In STEP 1, the average loss on semaglutide 2.4 mg weekly was 14.9% over 68 weeks, against 2.4% on placebo. If you have lost little after several months on your full dose, talk to your prescriber.

Average loss, top dose
14.9%
On placebo
2.4%
Trial length
68 weeks
Trial
STEP 1

Wegovy in brief

How long it remains in the body
100%50%25%0%07 d14 d21 d28 d35 d50%25%12.5%time after the dose

Its half-life is about 1 week: after 7 d half is gone, and after five half-lives (35 d) about 3% is left.

Weight lost in the main trial
Wegovy (STEP 1)14.9%Placebo2.4%

In STEP 1 over 68 weeks, the figure was 14.9% of body weight, compared with 2.4% for placebo.

Price as time goes on
202520262027$1,349.02$0List priceSelf-pay

Monthly price points in US dollars cover the list price, plus self-pay offers. Each one is read from the price page the maker posts.

Sources: FDA label (DailyMed), healthsystemtracker.org, prnewswire.com 1 2.

Semaglutide not working: the numbers first

Weight lost on average in each trial, grouped by dose
TrialDose groupAverage weight lostPlacebo or comparisonWeeksWho was in it
STEP 1Semaglutide 2.4 mg weekly14.9%2.4%68Adults with obesity or overweight, without diabetes
OASIS 4Wegovy pill 25 mg daily13.6%2.4%64Adults with obesity or overweight, without diabetes
SURMOUNT-5Semaglutide 1.7 or 2.4 mg weekly (Wegovy)13.7%semaglutide (Wegovy)72Adults with obesity, without type 2 diabetes
STEP 2Semaglutide 2.4 mg weekly9.6%3.4%68Adults with type 2 diabetes and either obesity or overweight

Sources for the studies: STEP 1 (FDA label (DailyMed)), SURMOUNT-5 (PubMed), STEP 2 (PubMed).

What causes a stall, and what helps

  1. See where you are in the dose steps. Across every trial listed above, the lower doses produced less weight loss.
  2. Look back over the past month and count the doses you took late or missed entirely.
  3. Record a few days of food and drinks. As portions get smaller, liquid calories and grazing add up.
  4. Get protein with each meal and continue strength exercise so that fat makes up most of your weight loss.
  5. Take a look at sleep and stress, since they change appetite.
  6. Ask your pharmacist whether any of the other medicines you take can lead to weight gain.
  7. If your progress has stalled for months, talk with your prescriber about switching medicines. Also ask about a thyroid test or a blood sugar check.

How many people in the trials stopped

Stopping because of side effects
TrialDose groupWhat happenedDrugPlacebo
STEP 1Semaglutide 2.4 mg weeklyStopped for stomach or bowel side effects4.5%Not listed
STEP 1All doses, label poolStopped for side effects6.8%Not listed

Sources: STEP 1 (FDA label (DailyMed)), STEP 1 (PubMed).