What to Know Before Your First Wegovy Dose

The short version

Your first Wegovy dose is 0.25 mg, once a week, and it stays there for a full month. [1] That number is deliberately small. It is a settling-in dose, and the first month is about letting your stomach get used to a slower pace. What most people feel early on, a little nausea, fullness after small meals, some tiredness, usually eases within the first 2 to 4 weeks. [1]

This article covers what to know before that first injection: technique, storage, what to eat and drink in week one, the symptoms that mean call now, and what realistic progress looks like at 4, 12, and 68 weeks. If you have not yet confirmed you qualify, start with who qualifies for Wegovy in the United States, and the full picture lives in our complete Wegovy guide.

How the first month feels, and why the dose starts low

Wegovy slows how quickly your stomach empties. [1] That is the point of the medicine, but your body needs time to adjust, and the lowest step gives you that time. Well Revolution follows a numbered ladder: step 1 is 0.25 mg weekly for month 1, step 2 is 0.5 mg for month 2, and step 3 is 1 mg for month 3. [1][2] Those three steps together are your starter block. [2] Steps 4 (1.7 mg) and 5 (2.4 mg, the maintenance dose) come in later blocks if your provider continues the ladder. [1][2][3] The full schedule is in the Wegovy dosing schedule.

In week one, expect to feel full sooner and to lose some interest in food. Mild nausea is common, especially after a larger meal, and some members notice burping, constipation, or looser stools. [1] These usually settle in the first 2 to 4 weeks. [1] If a step is hard to tolerate, your provider can hold you at it longer. [1] That shifts the calendar; it does not change the ladder. [2]

Injection day and technique

• Pick a day and keep it. Wegovy is given once weekly on the same day, any time of day, with or without food. [1]
• Changing your day. You can move it, as long as there are at least 2 days between doses. [1]
• Rotate sites. Use the abdomen, thigh, or upper arm, and move to a different spot each week. [1] Do not inject into skin that is tender, bruised, hard, red, or scarred. [1]
• One pen, one use. Each pen is single-use. [1] Drop the used pen in a sharps container, not the household trash. Our piece on Wegovy click counting explains why stretching pens is not something we recommend.

Storing the pen

• Unopened pens. Keep them in the refrigerator, in the carton. [1]
• Traveling or no fridge. Room temperature is fine for up to 28 days. [1]
• Pen was frozen. Discard it. Do not use a pen that has been frozen. [1]

What to eat and drink in week one

You do not need a special diet to start, but a few habits make the first weeks easier. Eat smaller meals, eat them slowly, and stop when you feel full rather than when the plate is empty. Greasy or very rich food sits heavily once digestion slows, so lean toward simpler meals with some protein while you adjust.

Drink water steadily through the day. When you feel less hungry it is easy to forget to drink too, and mild dehydration makes nausea and tiredness worse. If nausea does show up, our nausea guide covers practical fixes and when your provider may add a medicine to help.

Alcohol and dehydration

The Wegovy label does not set a rule about alcohol, so this is common sense rather than a protocol. [1] Alcohol is hard on a stomach that is already slower and more sensitive, it tends to make nausea worse, and it dehydrates you. If you drink, keep it small, eat first, and drink water alongside. Your provider can give guidance specific to your history.

The dehydration risk that matters most on the label is a different one: prolonged vomiting or diarrhea. [1] If either keeps going rather than passing, you lose fluid faster than you replace it, which also strains the kidneys. [1] Contact your provider if vomiting or diarrhea is persistent, and see how to tell normal GLP-1 effects from stop-now warnings for the fuller list.

The thyroid warning and the other call-now symptoms

Wegovy carries a boxed warning about thyroid C-cell tumors, which is why it is not prescribed to anyone with a personal or family history of medullary thyroid carcinoma or with multiple endocrine neoplasia type 2. [1] Your provider will have asked about this before approving you; the full list is in before starting Wegovy: the tests and history your provider checks.

The label says routine calcitonin blood tests or thyroid ultrasounds are of uncertain value, so Wegovy does not come with a standing thyroid monitoring schedule. [1] What it does come with is a short list of symptoms to report right away: [1]

• A lump or mass in the neck
• Trouble swallowing
• Shortness of breath
• Hoarseness that does not go away

Other symptoms that mean message your provider promptly rather than waiting for your next check-in: severe or persistent abdominal pain, especially if it moves to your back (a pancreatitis signal), vomiting or diarrhea that will not stop, signs of an allergic reaction such as swelling of the face or throat, and, if you have diabetes, any new change in your vision. [1] If you ever take more than you should, Poison Help is 1-800-222-1222. [1]

Pregnancy and contraception

Wegovy for weight management is not used in pregnancy. [1] If you are planning a pregnancy, the label says to stop Wegovy at least 2 months beforehand. [1] If you could become pregnant, your provider will talk with you about contraception before you start; the label flags patients of childbearing potential as needing that conversation but does not set a single method, so the plan is set for your history. [1] If you become pregnant while on Wegovy, stop and contact your provider. [1] The Wegovy Pregnancy Registry, 1-877-390-2760, collects outcomes to help future patients. [1]

Other medicines and slowed absorption

Because Wegovy slows digestion, it can change how quickly some oral medicines are absorbed. [1] That matters most for diabetes medicines, where low blood sugar becomes more likely when the two are combined. [1] Give your provider a full list of everything you take, including supplements, before your first dose. Do not combine Wegovy with another semaglutide product or with any other weight loss or blood sugar medicine unless it has been prescribed alongside it. [1]

Surgery

Tell your surgeon and anesthesia team that you are on Wegovy before any planned procedure, even a minor one. Slower stomach emptying matters for anesthesia safety. [1] Whether to pause the medicine, and for how long, is a decision they make with your prescribing provider; the label lists planned surgery as a caution, not a fixed rule. [1]

The missed-dose rule

• Missed a dose? Take it as soon as you remember. [1]
• Next dose due in less than 48 hours? Skip the missed one and stay on your normal day. [1]
• Never take two doses to make up for one you missed. [1]
• Missed 2 or more weeks in a row? Message your provider before restarting. [1] You may need to step back down the ladder; restarting Wegovy after stopping explains how that works.

What realistic results look like

At 4 weeks, you have finished step 1. The goal of this month is tolerance, not weight loss, and the label gives no 4-week number. [1] Some members see the scale move, many see appetite change first.

At 12 weeks, you have completed the starter block and reached 1 mg. [2] The label gives no 12-week figure either. [1] This is where your provider reviews how you tolerated each step and decides whether the next block continues the ladder. What that review covers is in the Wegovy follow-up schedule.

At 68 weeks, the trial figure is about 15 percent average body weight loss, and that word average matters. [4] Some people lose more, some less, depending on the dose reached, how consistently it is taken, and what changes around food and activity come with it. Wegovy is a long-term treatment [1]; what happens if you stop is covered in stopping Wegovy.

What it costs with Well Revolution

$80 for the Limited Treatment Plan. If approved, you will receive a 90 day treatment plan with 7 days a week support. Perfect for first time patients who are trying it out.

Or $90 for the Unlimited Membership. If approved, you will receive a full year of care with 7 days a week support, plus unlimited prescriptions, lab tests, imaging orders, letters and referrals with same day care, cancel anytime, no fees. Perfect for established patients looking for full care.

Getting started with Well Revolution

Well Revolution is chat-based. You message a licensed provider, same day, with no appointment to book. Send us a message and we will confirm coverage in your state, review your history, and, if Wegovy is right for you, set up your starter block.

References

1. Novo Nordisk. Wegovy (semaglutide) injection prescribing information and Medication Guide. FDA DailyMed, label updated 2026-06-18. DailyMed
2. Well Revolution semaglutide titration protocol, approved 2026-08-25 (internal).
3. Bald E, Raber H. Semaglutide (Wegovy) for the Treatment of Obesity. Am Fam Physician. 2023. PubMed 36689981
4. Wilding JPH, Batterham RL, Calanna S, et al. Once-Weekly Semaglutide in Adults with Overweight or Obesity (STEP 1). N Engl J Med. 2021. PubMed 33567185

Reviewed by PA Michael Rubio, US Medical Director