--- title: "Wegovy Side Effects: 2.4 mg vs 7.2 mg, From the Label" description: "Wegovy side effects from the June 2026 label: how often each one happened at 2.4 mg and 7.2 mg vs placebo, how long they last, and when to call." url: https://mingo.fit/blog/wegovy-side-effects/ language: en published: 2026-11-03 --- # Wegovy Side Effects: 2.4 mg vs 7.2 mg, From the Label The most common Wegovy side effects are digestive: nausea, diarrhea, vomiting and constipation, reported most often while the dose is being raised. The label's boxed warning is about thyroid C-cell tumors seen in rodents. Call your prescriber about stomach pain that is severe and won't go away, or vomiting or diarrhea that doesn't stop, and get medical help right away for signs of a serious allergic reaction. Mingo is a GLP-1 tracker app; this guide summarizes the prescribing information and published trials and is not medical advice. Every side-effect rate below comes from the US prescribing information for Wegovy ([DailyMed, revised 6/2026](https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=ee06186f-2aa3-4990-a760-757579d8f77b)) or a named trial. This guide covers the weekly injection; the label's tablets have their own guide, [Wegovy pill side effects](https://mingo.fit/blog/oral-wegovy-side-effects/). For other GLP-1 medicines, see our [GLP-1 side effects guide](https://mingo.fit/blog/glp-1-side-effects-what-to-expect-and-how-to-manage/). ## How common is each Wegovy side effect at 2.4 mg? The label's main table pools three placebo-controlled weight-reduction trials in adults with obesity or overweight, 19% of them with type 2 diabetes, treated for up to 68 weeks. The first of the three is STEP 1, published in 2021 ([Wilding et al., NEJM](https://pubmed.ncbi.nlm.nih.gov/33567185/)). The table lists every reaction reported by at least 2% of people on Wegovy and more often than on placebo. Source: Wegovy prescribing information, revised 6/2026, section 6.1, Table 3. | Side effect | Placebo (1,261 people) | Wegovy 2.4 mg (2,116 people) | |---|---|---| | Nausea | 16% | 44% | | Diarrhea | 16% | 30% | | Vomiting | 6% | 24% | | Constipation | 11% | 24% | | Stomach pain | 10% | 20% | | Headache | 10% | 14% | | Tiredness | 5% | 11% | | Upset stomach (dyspepsia) | 3% | 9% | | Dizziness | 4% | 8% | | Bloating (abdominal distension) | 5% | 7% | | Belching | under 1% | 7% | | Low blood sugar, in type 2 diabetes | 2% | 6% | | Gas | 4% | 6% | | Stomach flu (gastroenteritis) | 4% | 6% | | Reflux disease (GERD) | 3% | 5% | | Inflamed stomach lining (gastritis) | 1% | 4% | | Viral gastroenteritis | 3% | 4% | | Hair loss | 1% | 3% | | Altered skin sensation (dysesthesia) | 1% | 2% | "Tiredness" includes weakness. Low blood sugar was counted only in the trial of adults with type 2 diabetes not on insulin, as a reading below 54 mg/dL or a severe episode. Read the placebo column: people on placebo also reported nausea, diarrhea and headache, so the gap is closer to what the medicine adds. As a group, digestive reactions were reported by 73% of adults on Wegovy injection in the weight-reduction trials, against 47% on placebo. The label ties hair loss to weight reduction; in the pooled trials it was reported by 4% of women and 0.9% of men on Wegovy, against 2% of women and no men on placebo. ## When do Wegovy side effects start, and how long do they last? The label gives a pattern but not a duration. It says digestive reactions were "most frequently reported during dosage escalation": the first 16 weeks, when the weekly dose steps up from 0.25 mg through 0.5 mg, 1 mg and 1.7 mg. Those steps exist to lower the risk of digestive side effects, and if a step isn't tolerated, the label lets your prescriber consider waiting four more weeks before the next one. The STEP 1 publication describes nausea and diarrhea as usually short-lived and mild to moderate, easing over time. Neither source gives a number of days or weeks. The label doesn't report how long nausea lasts after a shot or a dose step, so a timeline you read elsewhere doesn't come from it. To see your own pattern, rate each symptom on the days after your shot and after each increase, and look at it next to the dose you were on. The label also notes that kidney reactions happened more often during dose increases, and that skin-sensation changes at 7.2 mg rose with the dose and with drug levels in the blood (more below). ## Managing nausea, constipation, diarrhea and reflux The Medication Guide's advice is short: drink fluids to lower your chance of dehydration, and tell your healthcare provider right away about nausea, vomiting or diarrhea that doesn't go away. The tips below come from [Cleveland Clinic's guide to GLP-1 digestive side effects](https://health.clevelandclinic.org/how-to-manage-glp-1-side-effects) (September 2026) and, for reflux, the NIDDK. Ask your prescriber before taking any medicine. ### Nausea - **Eat smaller meals, and eat slowly.** Cleveland Clinic notes that a big meal on a GLP-1 can bring on nausea and reflux. - **Go easy on common triggers:** sugary drinks and foods, refined carbohydrates, ultra-processed snacks, and high-fat or spicy foods. - **Eat lighter before a new dose,** the first one or the first after an increase. - **Stay upright for 30 minutes after eating;** lying down can make nausea worse. - **Sip ginger or peppermint tea** without sweeteners. - **Ask about anti-nausea medicine** if nausea keeps coming back after your shot. ### Vomiting and diarrhea These can dehydrate you, and the label links dehydration to kidney injury. - **Replace fluids with electrolytes,** not just water. - **Choose soft, bland, low-fiber foods** while it lasts. - **Limit caffeine, alcohol and dairy-based drinks.** - **Ask your prescriber about a short-term over-the-counter option** before using one. ### Constipation - **Drink water** to help soften stool, and **move**: even a short walk helps. - **Use a footstool** under your feet on the toilet. - **Ask about stool softeners or laxatives.** - **Time your fiber.** If you already feel bloated right after a dose, go easy on high-fiber foods at that moment. Severe constipation, including fecal impaction and intestinal blockage, has been reported since approval (label section 6.2), so constipation that is severe or won't go away is a reason to call. ### Heartburn and reflux - **Keep meals small,** as for nausea. - **Leave time before lying down.** For night-time symptoms, the NIDDK suggests eating [at least 3 hours before you lie down](https://www.niddk.nih.gov/health-information/digestive-diseases/acid-reflux-ger-gerd-adults/eating-diet-nutrition) and [raising your head 6 to 8 inches](https://www.niddk.nih.gov/health-information/digestive-diseases/acid-reflux-ger-gerd-adults/treatment) with a foam wedge or extra pillows. - **Know the usual triggers:** high-fat and spicy foods, caffeine, chocolate, alcohol, citrus, tomatoes and mint. If you use peppermint tea for nausea, keep an eye on it. - **Check before daily antacids.** The NIDDK advises talking with your doctor before using them every day or for severe symptoms. ## What are the serious side effects of Wegovy? These come from the label's boxed warning and its Warnings and Precautions (section 5). Most are uncommon. - **Thyroid C-cell tumors (boxed warning).** Semaglutide caused them in mice and rats; it's unknown whether Wegovy does in people. Wegovy must not be used by people with a personal or family history of medullary thyroid carcinoma (MTC) or with MEN 2. - **Pancreatitis.** Persistent or severe stomach pain, sometimes reaching the back. In the adult weight-reduction trials it was confirmed in 4 people on Wegovy and 1 on placebo. - **Gallbladder problems.** In the adult weight-reduction trials, gallstones were reported by 1.6% on Wegovy injection and 0.7% on placebo, and gallbladder inflammation by 0.6% and 0.2%. The label says the difference held even after accounting for weight loss. - **Kidney injury from dehydration,** reported since approval, sometimes needing dialysis, mostly after nausea, vomiting or diarrhea. - **Severe digestive reactions,** in 4.1% on Wegovy injection and 0.9% on placebo in the adult weight-reduction trials. Wegovy isn't recommended for people with severe gastroparesis. - **Low blood sugar,** more likely with type 2 diabetes plus insulin or a sulfonylurea. - **Serious allergic reactions,** including anaphylaxis and angioedema. - **Diabetic eye disease.** In Study 3, a weight-reduction trial in adults with type 2 diabetes, diabetic retinopathy was reported by 4% on Wegovy and 2.7% on placebo. - **Faster heart rate.** Resting heart rate rose by 1 to 4 beats per minute on average compared with placebo, and 26% of adults on Wegovy had a rise of 20 beats per minute or more at some visit, against 16% on placebo. If it stays up, the label tells prescribers to stop Wegovy. - **Food in the lungs under anesthesia or deep sedation.** Wegovy slows stomach emptying, and rare cases have been reported with GLP-1 medicines. - **Pen sharing.** Never share a pen, even with a new needle. ### Call your prescriber or get emergency care From the Wegovy Medication Guide: **Get medical help right away, and stop Wegovy,** if you have signs of a serious allergic reaction: swelling of your face, lips, tongue or throat; problems breathing or swallowing; severe rash or itching; fainting or feeling dizzy; or a very rapid heartbeat. If you take too much Wegovy, call your healthcare provider or Poison Help at 1-800-222-1222, or go to the nearest emergency room. **Stop Wegovy and call your healthcare provider right away** if you have severe pain in your stomach area that will not go away, with or without nausea or vomiting. **Call your healthcare provider** if you have: - pain in your upper stomach, fever, yellowing of your skin or eyes, or clay-colored stools - nausea, vomiting or diarrhea that does not go away, or stomach problems that are severe - your heart racing or pounding in your chest for several minutes - a lump or swelling in your neck, hoarseness, trouble swallowing or shortness of breath - changes in vision, if you have type 2 diabetes - signs of low blood sugar if you have diabetes, such as shakiness, sweating, confusion or a fast heartbeat ## What changes at the 7.2 mg dose? The label now includes a 7.2 mg weekly dose, sold as Wegovy HD, for adults using Wegovy for weight reduction who have tolerated 2.4 mg for at least four weeks and need more weight loss. It was tested against 2.4 mg and placebo in two 72-week trials: STEP UP, in 1,407 adults with obesity and without diabetes ([Wharton et al., 2025](https://pubmed.ncbi.nlm.nih.gov/40961952/)), and STEP UP T2D, in 512 adults with obesity and type 2 diabetes ([Lingvay et al., 2025](https://pubmed.ncbi.nlm.nih.gov/40961953/)). The label pools their safety data in a table of reactions reported by at least 2% of people on 7.2 mg and more often than on both 2.4 mg and placebo. Source: Wegovy prescribing information, revised 6/2026, section 6.1, Table 4. | Side effect | Placebo (303 people) | Wegovy 2.4 mg (304 people) | Wegovy 7.2 mg (1,311 people) | |---|---|---|---| | Nausea | 13% | 35% | 39% | | Vomiting | 6% | 16% | 22% | | Altered skin sensation (dysesthesia) | 0% | 6% | 22% | | Constipation | 8% | 19% | 20% | | Stomach pain | 7% | 9% | 12% | | Tiredness | 5% | 9% | 11% | | Headache | 7% | 8% | 9% | | Dizziness | 1% | 5% | 6% | | Hair loss | 1% | 3% | 6% | | Gas | 2% | 2% | 4% | What the table shows: - **Digestive effects rise less than you might expect.** Nausea and constipation were close between the two doses; vomiting was more common at 7.2 mg. Diarrhea is missing because the table lists only reactions more common at 7.2 mg than at both comparisons. In STEP UP alone, digestive adverse events of any kind were reported by 70.8% on 7.2 mg, 61.2% on 2.4 mg and 42.8% on placebo. - **Skin sensations are the new one.** Dysesthesia here groups 11 terms, including tingling or pins and needles (paresthesia), a burning feeling, skin that hurts to the touch (allodynia) and sensitive skin. Among the 288 people who had it on 7.2 mg, 2% stopped Wegovy for good, 8% paused it and 23% had their dose lowered. Most of those recovered, and their events cleared faster than when nothing was changed. Of all 288, 18% hadn't reported recovering by the end of the trial, mostly people whose dose stayed the same. Of 38 who recovered and went back up to 7.2 mg, 17 (45%) had it again. - **Hair loss was mostly in women.** At 7.2 mg it was reported by 8.4% of women and 0.2% of men. Why does 2.4 mg show less nausea here than in the first table? Different trials with different people, so compare doses within one table, not across the two. Dysesthesia also differs because Table 3 counts it with a narrower list of eight terms. ## Stopping Wegovy because of side effects In the three trials behind the 2.4 mg table, 6.8% of people on Wegovy and 3.2% on placebo stopped for good because of an adverse reaction. The most common reasons were nausea (1.8% vs 0.2%), vomiting (1.2% vs 0%) and diarrhea (0.7% vs 0.1%). Across the adult weight-reduction trials, 4.3% of people on Wegovy stopped because of a digestive reaction, against 0.7% on placebo. In the 7.2 mg trials, 5% on 7.2 mg, 5% on 2.4 mg and 2% on placebo stopped because of adverse reactions, most often digestive ones (3%, 3% and 0.3%). In the cardiovascular outcomes trial, in adults aged 45 or older with established cardiovascular disease and without diabetes, who were on Wegovy for a median of 37.3 months, 16% on Wegovy and 8% on placebo stopped the study drug because of an adverse event. Most people kept going, but a minority couldn't. The label gives prescribers options short of stopping, such as waiting longer before an increase or a 1.7 mg maintenance dose instead of 2.4 mg. If side effects make you want to quit, talk to your prescriber first. ## Does Wegovy affect mood? Earlier Wegovy labels carried a warning about suicidal thoughts and behavior. On January 13, 2026, the FDA asked the makers of Wegovy, Saxenda and Zepbound to remove it ([FDA Drug Safety Communication](https://www.fda.gov/drugs/drug-safety-communications/fda-requests-removal-suicidal-behavior-and-ideation-warning-glucagon-peptide-1-receptor-agonist-glp)). Its review included a meta-analysis of 91 placebo-controlled trials with 107,910 patients, which found no increased risk of suicidal thoughts or behavior, or of related problems such as anxiety or depression. The current label (revised 6/2026) has no such warning; its list of recent major changes shows it removed in February 2026. The FDA's advice to patients still stands: tell your health care professional about new or worsening depression, suicidal thoughts, or any unusual changes in mood or behavior. In the US you can call or text 988 at any hour. ## Wegovy vs Ozempic: same medicine, different labels Wegovy and Ozempic both contain semaglutide. Ozempic is approved for adults with type 2 diabetes, at weekly doses from 0.25 mg up to 2 mg ([Ozempic prescribing information, revised 5/2026](https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=adec4fd2-6858-4c99-91d4-531f5f2a2d79)). Wegovy injection is approved for weight reduction, for lowering cardiovascular risk in adults with cardiovascular disease and obesity or overweight, and for a liver condition called MASH, at maintenance doses up to 2.4 mg, or 7.2 mg for weight reduction in adults. Both labels carry the same boxed warning about thyroid C-cell tumors. Their side-effect rates, though, come from different trials, people and doses, so they can't be ranked against each other; the Wegovy label itself says rates from one drug's trials can't be directly compared with another's. It also says Wegovy shouldn't be combined with other semaglutide products or other GLP-1 medicines. See [semaglutide side effects](https://mingo.fit/blog/semaglutide-side-effects/), [Ozempic side effects](https://mingo.fit/blog/ozempic-side-effects/) and [Ozempic vs Wegovy](https://mingo.fit/blog/ozempic-vs-wegovy-key-differences-glp-1-users/). ## Keeping a side-effect log in Mingo Mingo, our app, has 18 built-in symptoms you rate on a 0 to 10 slider, among them nausea, constipation, heartburn, sulfur burps, fatigue and hair loss. You can add your own, such as vomiting, or skin sensitivity if you move up to 7.2 mg, so you and your prescriber can see whether it follows the dose. Each symptom can be charted against your estimated medication level, which Mingo calculates from the doses you log and a half-life model. It's an estimate, not a blood test. Log each weekly shot with its dose, injection site (12 sites on a body map, with optional left and right alternation) and notes. Mingo reminds you on shot day, can give you a heads-up beforehand, and nudges you 2 hours later if the dose isn't logged. The weight chart is colored by the dose you were on, with a marker at each new dose, so each dose step lines up with how you felt. Meals can be logged by photo, voice, text or barcode, with daily protein, fiber and water targets. Before an appointment, export a PDF of your doses, estimated levels, weight, food and side effects for any period. There's no account: your log stays on your phone, while meal photos, voice notes and descriptions are sent to Mingo's server to estimate nutrients. Logging new entries needs Mingo Pro after the first ones; reminders, the medication-level chart and the PDF report stay free. See [how Mingo tracks Wegovy](https://mingo.fit/wegovy-tracker/). ## Sources - [Wegovy (semaglutide) injection and tablets: prescribing information and Medication Guide](https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=ee06186f-2aa3-4990-a760-757579d8f77b). DailyMed, revised 6/2026. - [Ozempic (semaglutide) injection: prescribing information](https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=adec4fd2-6858-4c99-91d4-531f5f2a2d79). DailyMed, revised 5/2026. - Wilding JPH, et al. [Once-weekly semaglutide in adults with overweight or obesity (STEP 1)](https://pubmed.ncbi.nlm.nih.gov/33567185/). N Engl J Med. 2021;384:989-1002. - Wharton S, et al. [Once-weekly semaglutide 7.2 mg in adults with obesity (STEP UP)](https://pubmed.ncbi.nlm.nih.gov/40961952/). Lancet Diabetes Endocrinol. 2025;13:949-963. - Lingvay I, et al. [Once-weekly semaglutide 7.2 mg in adults with obesity and type 2 diabetes (STEP UP T2D)](https://pubmed.ncbi.nlm.nih.gov/40961953/). Lancet Diabetes Endocrinol. 2025;13:935-948. - FDA. [Removal of the suicidal behavior and ideation warning from GLP-1 RA medications](https://www.fda.gov/drugs/drug-safety-communications/fda-requests-removal-suicidal-behavior-and-ideation-warning-glucagon-peptide-1-receptor-agonist-glp). Drug Safety Communication, January 13, 2026. - Cleveland Clinic. [How to manage the digestive side effects of GLP-1 medications](https://health.clevelandclinic.org/how-to-manage-glp-1-side-effects). September 9, 2026. - NIDDK. [Eating, diet and nutrition for GER and GERD](https://www.niddk.nih.gov/health-information/digestive-diseases/acid-reflux-ger-gerd-adults/eating-diet-nutrition) and [Treatment for GER and GERD](https://www.niddk.nih.gov/health-information/digestive-diseases/acid-reflux-ger-gerd-adults/treatment). ## Frequently asked questions ### Are Wegovy side effects worse at higher doses? Digestive side effects were reported most often while the dose was being raised. In the 7.2 mg trials, vomiting and changes in skin sensation were more common at 7.2 mg than at 2.4 mg, and the label says skin-sensation changes rose with the dose and with drug levels in the blood. Your prescriber decides whether and when to go up, and can slow the steps if a dose isn't tolerated. ### Does Wegovy cause hair loss? Hair loss is on the label's list of reactions reported more often than on placebo, and the label says it was associated with weight reduction. Women reported it far more often than men, and it was more common at 7.2 mg than at 2.4 mg. If you notice it, tell your prescriber, and log it so you can see whether it follows your weight loss. ### Do Wegovy side effects peak on a certain day after the shot? The label doesn't say. It reports that semaglutide reaches its highest level in the blood 1 to 3 days after an injection, but it doesn't tie side effects to any day of the week. Rating your symptoms every day for a few weeks is the way to see whether yours follow your shot day. ### Can missing Wegovy doses make side effects come back? The label says that after two or more missed weekly doses in a row, prescribers should restart the dose steps at a lower dose to reduce the risk of digestive side effects. The Medication Guide asks you to contact your healthcare provider about how to restart in that case, rather than going straight back to your old dose. ### Should I stop Wegovy before surgery? Tell every provider involved that you take Wegovy before any planned surgery or procedure with anesthesia or deep sedation. Wegovy slows stomach emptying, and rare cases of food getting into the lungs have been reported with GLP-1 medicines. The label says the data aren't enough to know whether stopping it or changing fasting rules lowers that risk, so the plan is your care team's call. ### Can I use Wegovy while pregnant or trying to get pregnant? The label says Wegovy may harm an unborn baby and that people using it for weight reduction should stop when a pregnancy is recognized. Because semaglutide stays in the body a long time, it also says to stop at least 2 months before a planned pregnancy. Talk to your prescriber as soon as you start planning.