What is the semaglutide dosage schedule for weight loss?

Five once-weekly steps of four weeks each: 0.25 mg, 0.5 mg, 1.0 mg, 1.7 mg, then 2.4 mg as the maintenance dose from week 17. The first four are initiation and escalation doses and are not approved as maintenance doses for chronic weight management. Diabetes treatment follows a different ladder.

Why does semaglutide take 17 weeks to reach the full dose?

Semaglutide's half-life is roughly one week, so blood levels need about four to five weeks to plateau after each change. Four weeks per step lets the body adapt before more drug arrives. The pace exists to make side effects manageable — escalating faster mainly produces more nausea, not faster results.

Does slower semaglutide titration actually help?

Yes, and the evidence is direct. In a 2025 randomized pilot, gradual flexible titration cut gastrointestinal-related withdrawals from 19% to 2% and nausea from 64.2% to 45.1% versus the standard schedule, without compromising outcomes. Going slower is a legitimate clinical strategy, not a compromise.

Can I stay on a lower semaglutide dose instead of going to 2.4 mg?

Some people settle at 1.7 mg or lower because the tolerability trade at 2.4 mg is not worth it to them, and that is a legitimate endpoint rather than a shortfall. The target dose is a decision between you and your prescriber based on your response and how you tolerate each step.

Why is my compounded semaglutide dose in units instead of milligrams?

Compounded vials are prepared at a concentration the pharmacy sets, and instructions are often written in units on an insulin syringe. Units measure volume, not drug — identical unit counts from differently concentrated vials deliver different doses. Get any conversion from your prescriber or the dispensing pharmacy, never from an online chart.

What if I miss a semaglutide dose?

If the next scheduled dose is more than two days away, take the missed one as soon as you remember. If it is due within two days, skip it and resume normally. Never double up. After missing several weeks, contact your prescriber — tolerance falls with blood levels and restarting lower is common.

Semaglutide Dosage: The 17-Week Ladder

Semaglutide dosage for weight management escalates through five once-weekly doses — 0.25 mg, 0.5 mg, 1.0 mg, 1.7 mg and 2.4 mg — spending four weeks at each. The earliest anyone reaches the 2.4 mg maintenance dose is week 17. The first three rungs are escalation doses, not maintenance doses, and the slow climb exists specifically to blunt the side effects.

The semaglutide dosage ladder for weight management

Weeks	Dose (once weekly)	Purpose
1–4	0.25 mg	Initiation — not a maintenance dose
5–8	0.5 mg	Escalation
9–12	1.0 mg	Escalation
13–16	1.7 mg	Escalation
17+	2.4 mg	Maintenance

In the pivotal weight-management studies, participants escalated to 2.4 mg over a 16-week period and then continued on the maintenance dose for 52 weeks. The trial results people quote are results at 2.4 mg after that full ramp — not results from starting there.

Semaglutide is also prescribed for type 2 diabetes on a different ladder that tops out lower. The schedule above is the weight-management one; which applies to you depends on what you are being treated for, and that is your prescriber's call.

Why four weeks at each dose

Semaglutide's half-life is about one week. After any dose change, blood levels take roughly four to five weeks to plateau. Move up before that and you are adding drug on top of a concentration that is still climbing — the reason a rushed escalation produces side effects out of proportion to the dose on the label.

Four weeks is a minimum interval, not a deadline. Staying longer at a dose is a normal, expected adjustment.

Slower titration is well supported

The evidence that pace matters is direct. In a 2025 randomized titration pilot, a gradual flexible schedule cut gastrointestinal-related withdrawals from 19% to 2% (P=0.005) and nausea from 64.2% to 45.1% compared with the standard schedule, without compromising outcomes (Eldor et al., Diabetes Care 2025; a published correction was issued in February 2026).

That is a large difference in whether people stay on treatment, bought purely by going slower. If the days after each step-up are consistently difficult, the schedule is the lever — say so rather than pushing through.

What each dose is associated with

In STEP 1, 1,961 adults with overweight or obesity took semaglutide 2.4 mg alongside lifestyle intervention (Wilding et al., NEJM 2021). Nausea was reported by 44.2%, diarrhea by 31.5% and vomiting by 24.8% — and those rates reflect the whole trial, concentrated around escalation rather than spread evenly across it.

The practical read: the lower rungs are not doing nothing, but they are primarily there to get you to the maintenance dose in one piece. Some people settle at 1.7 mg because the tolerability trade at 2.4 mg is not worth it to them. That is a legitimate endpoint, not a shortfall.

We cover the full safety picture in semaglutide side effects.

Compounded semaglutide is dosed by your prescriber

Through Promise, semaglutide is dispensed as a compounded medication, which is different from an FDA-approved product: the formulation offered here — semaglutide with vitamin B12 — is not FDA-approved. The dosing research above comes from trials of the molecule itself.

Compounded vials are prepared at a concentration the pharmacy sets, so instructions are frequently written in units on an insulin syringe rather than in milligrams. Units measure volume, not drug: the same number of units from two vials of different concentration delivers different amounts. Never convert using a chart you found online — get it from your prescriber or the dispensing pharmacy.

Missing a dose

If you miss a dose and the next scheduled one is more than two days away, take it as soon as you remember. If your next dose is due within two days, skip the missed one and resume your normal schedule. Do not take two doses to catch up.

After a longer gap, tolerance falls with blood levels. Contact your prescriber rather than resuming at your previous dose — restarting lower is common.

Practical details

Semaglutide is injected subcutaneously once weekly, on the same day each week, with or without food, rotating between abdomen, thigh and upper arm. You can move which day you take it provided at least two days separate doses.

How the schedule is set at Promise

A licensed provider in Promise's prescriber network reviews every request against your medical history and prescribes only when semaglutide is appropriate — or declines. Not everyone qualifies. Your starting dose, escalation pace and maintenance target come out of that review, not from a chart. Follow-up check-ins are included, which is where the pace normally gets adjusted.

If you are comparing options first, tirzepatide versus semaglutide sets the two side by side, and the metabolic support and fat loss hub covers the rest of the category.