Semaglutide starting dose for weight loss: what it is
Semaglutide starting dose for weight loss is low and increased gradually to reduce side effects. See the FDA Wegovy schedule and how titration works.
Key facts
- Semaglutide + B12 is $157/month (billed $157 every 4 weeks), charged only after a clinician approves it.
- Answer a few health questions online. A licensed clinician reviews them. If approved, it ships to your door.
- Adults 18 or older. A licensed clinician reviews your health history and decides whether treatment is appropriate for you. Availability depends on the state you live in.
The semaglutide starting dose for weight loss is intentionally low, then increased in steps. This gradual increase, called titration, is designed to help your body adjust and to reduce stomach and bowel side effects that are common early in treatment. This page summarizes FDA labeled dosing for Wegovy (semaglutide) for education, and explains what to clarify if you are prescribed compounded semaglutide. If you want help interpreting dosing questions in context, Vitals Vault also offers PocketMD as a free way to ask against your own history.
- For Wegovy, the starting dose is 0.25 mg once weekly.
- The Wegovy dose is increased every 4 weeks, if tolerated.
- Starting low helps reduce nausea, vomiting, and diarrhea.
- Compounded semaglutide is not FDA-approved; dosing varies by pharmacy.
What is the starting dose for semaglutide weight loss?
Dose schedule details that matter
| Treatment phase | Dose | How long (per label) |
|---|---|---|
| Start | 0.25 mg once weekly | 4 weeks |
| Step up 1 | 0.5 mg once weekly | 4 weeks |
| Step up 2 | 1 mg once weekly | 4 weeks |
| Step up 3 | 1.7 mg once weekly | 4 weeks |
| Maintenance | 1.7 mg or 2.4 mg once weekly | Ongoing |
Why start low
Semaglutide commonly causes gastrointestinal side effects, especially when you start or increase the dose. A gradual increase is intended to improve tolerability so you are more likely to stay on treatment long enough to evaluate benefit.
If side effects limit increases
The Wegovy label allows delaying dose escalation for 4 more weeks if needed. If you cannot tolerate the 2.4 mg maintenance dose, the label describes a reduced maintenance dose of 1.7 mg once weekly.
Missed dose basics
The label gives specific guidance based on how many days have passed since the missed dose and whether two or more doses were missed. Because timing matters, confirm the plan with your prescribing clinician rather than doubling up.
Injection sites (label only)
For Wegovy, the label lists injection under the skin (subcutaneous) in the abdomen, thigh, or upper arm. Your pharmacist or prescribing clinician should show you how to use the pen, and the Instructions for Use cover the steps.
Compounded product differences
Compounded semaglutide may be dispensed in a different container and concentration than Wegovy pens, and the dosing directions may be written differently. Use only the instructions from your clinician and dispensing pharmacy, and ask if anything is unclear.
Nausea
Nausea is one of the most common side effects on the Wegovy label. It is often most noticeable when starting or after a dose increase, which is one reason the schedule begins at 0.25 mg once weekly.
Vomiting or diarrhea
Vomiting and diarrhea are also listed as common. If you cannot keep fluids down or you have signs of dehydration, contact your clinician promptly because dehydration can worsen kidney problems.
Pancreatitis
Acute pancreatitis has been reported with GLP-1 receptor agonists, including semaglutide. Seek urgent medical care for severe, persistent abdominal pain that may radiate to the back, with or without vomiting.
Gallbladder problems
Gallbladder disease, including gallstones, is a warning in the Wegovy prescribing information. Contact a clinician for upper abdominal pain, fever, jaundice, or clay-colored stools.
Thyroid C-cell tumor warning
Wegovy carries a boxed warning about risk of thyroid C-cell tumors based on rodent studies, and it is contraindicated in people with a personal or family history of medullary thyroid carcinoma or MEN 2. Call your clinician for a neck lump, hoarseness, trouble swallowing, or shortness of breath.
When to talk to your prescribing clinician
Before your first dose
Confirm which semaglutide product you are prescribed (Wegovy versus compounded semaglutide) and the exact starting dose and schedule. Ask how to handle missed doses and what symptoms should prompt a call or urgent care.
If you have diabetes
If you use insulin or a sulfonylurea, semaglutide can increase the risk of low blood sugar when used together. Your clinician may need to adjust other diabetes medicines and review how you monitor for hypoglycemia.
If you have severe GI symptoms
Persistent vomiting, inability to keep fluids down, or severe abdominal pain are not expected titration symptoms to push through. These can be signs of dehydration, pancreatitis, or gallbladder disease and should be evaluated promptly.
If you are pregnant or planning
Discuss pregnancy plans before starting semaglutide. The Wegovy label recommends stopping semaglutide at least 2 months before a planned pregnancy due to its long half-life.
If you have thyroid cancer risk
Tell your clinician if you or a family member has medullary thyroid carcinoma, or if you have MEN 2, because Wegovy is contraindicated. Ask what symptoms to watch for and whether another approach is safer.
Pro tips for starting safely
Think schedule, not speed
The label uses 4-week steps to improve tolerability.
Plan for change weeks
Side effects can be more noticeable after starting or stepping up.
Do not self-adjust
Ask your clinician about options the label allows.
Know your product
Wegovy pens and compounded semaglutide can differ in directions.
Use official instructions
For Wegovy, follow the Instructions for Use and get a demo.
Frequently Asked Questions
What is the semaglutide starting dose for weight loss?
For FDA approved semaglutide used for chronic weight management (Wegovy), the labeled starting dose is 0.25 mg once weekly. Your clinician may keep you at a lower step longer if side effects limit dose increases.
How long do you stay on the starting dose before increasing?
On the Wegovy label, each dose step is used for 4 weeks before moving to the next step. If you are not tolerating a step, the label allows delaying escalation for 4 more weeks.
How often do you take semaglutide for weight loss?
Wegovy is dosed once weekly by subcutaneous injection, according to the FDA prescribing information. Your exact schedule depends on the product prescribed and your clinician’s plan, especially with compounded semaglutide.
Where do you inject semaglutide for weight loss?
For Wegovy, the label lists injection under the skin in the abdomen, thigh, or upper arm. A pharmacist or prescribing clinician should show you how to use the pen, and the Instructions for Use provide the detailed steps.
Is compounded semaglutide dosed the same as Wegovy?
Not necessarily. Compounded semaglutide is not FDA-approved, and the concentration and dosing directions can differ by pharmacy. Follow only the instructions from your prescribing clinician and dispensing pharmacy.