Wegovy pill vs. injection: 9 key differences

The Wegovy pill is an oral form of injectable Wegovy (semaglutide), but that’s not the only difference between the two. Read on as we compare the Wegovy pill vs. injection and break down nine key differences between the two.

The Wegovy pill and the injection work similarly, as they contain the same active ingredient: semaglutide. Specifically, these GLP-1 medications work by:

• Slowing down digestion, so you feel full sooner

• Stimulating the release of insulin, while limiting glucagon, after you eat

• Boosting satiety (fullness) signals in the brain, reducing appetite and cravings

Together, these effects can produce weight loss and better blood sugar control, making Wegovy effective for treating a variety of conditions, from obesity to reducing heart disease risk. 

Here’s a quick look at the main differences when comparing the Wegovy injection vs. pill.

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Two of the main differences between the Wegovy pill and injection are how they’re taken and absorbed by the body. 

Administration 

The Wegovy pill is taken once daily in the morning on an empty stomach, at least 30 minutes before eating, drinking, or taking other medications. You can take it with up to 4 ounces of water. 

The Wegovy injection comes in a single-use, prefilled injection pen that’s injected subcutaneously (under-the-skin) of your abdomen, thigh, or upper arm once a week, on the same day each week. You can take it any time of day, with or without food, drink, or other medications. Just be sure to rotate injection sites each week to prevent irritation. 

Absorption 

Compared to the Wegovy injection, the Wegovy pill has a much lower bioavailability (i.e. how much of the active ingredient is available in your bloodstream). That’s why the pill comes in higher doses than the injection.

The Wegovy pill has a low bioavailability of 1%–2%. This is because semaglutide is poorly absorbed by the gastrointestinal (GI) tract when taken orally. To account for this, the Wegovy pill:

• Comes in higher dosage strengths than the injection: 1.5 mg–25 mg vs. 0.25 mg–2.4 mg, respectively

• Contains SNAC technology to increase absorption in the gut

Oral Wegovy reaches its peak concentration in your bloodstream within one hour.

Meanwhile, the Wegovy injection has a much higher bioavailability of 89% because semaglutide is absorbed more efficiently when injected under the skin. It reaches its peak concentration in your bloodstream within 1–3 days.

The Wegovy pill and injection come in different dosage strengths and follow different dosing schedules (daily vs. weekly). 

• The Wegovy pill is taken daily and comes in four dosage strengths: 1.5 mg, 4 mg, 9 mg, and 25 mg. The recommended maintenance dosage is 25 mg daily. 

• The Wegovy injection is administered weekly and comes in five dosage strengths: 0.25 mg, 0.5 mg, 1 mg, 1.7 mg, and 2.4 mg. The recommended maintenance dosage is 2.4 mg weekly, but some people may tolerate the 1.7 mg dosage better and stick with that.

Both the Wegovy pill and injection follow a gradual titration schedule, during which you start at a low dosage and gradually increase to your maintenance dosage over a period of months. However, it may take longer to reach your maintenance dosage on the Wegovy injection.

• Each bottle of the Wegovy pill contains 30 tablets (or 30 daily doses). The dosage is typically increased every 30 days during titration.

• Each carton of the Wegovy injection contains four pens (or four weekly doses). The dosage is typically increased every 4 four weeks during titration. 

When purchased with cash, the prices of the Wegovy pill vary depending on the dosage strength, with lower doses costing less than higher doses. However, even the highest dose of the Wegovy pill is less expensive than the Wegovy injection. 

• The Wegovy pill costs $149–$299 per month, depending on the dosage strength, when purchased using self-pay on Ro. 

• The Wegovy injection costs $199–$349 per month, depending on dosage strength, when purchased using self-pay on Ro. (FYI, the $199 per month is a limited offer for the first month of the  0.25 mg and 0.5 mg doses and is only available through March 31, 2026.)

Both the Wegovy pill and Wegovy injection may cost even less, if your insurance provides coverage for Wegovy. For example, people with insurance coverage for Wegovy may be able to get Wegovy for as low as $25 with the official Wegovy Savings Offer. If you don’t have coverage through your plan, you may be able to save using the self-pay options described above. 

People with prescription drug coverage through Medicare, Medicaid, or other federal, state, or government-funded programs are not eligible for the self-pay offer. In those cases, you may have a lower copay through your insurance plan. Or, if you pay cash for your prescriptions, you may be able to save with a Wegovy coupon or prescription discount card.

The Wegovy injection is slightly more effective for weight loss than the Wegovy pill, according to existing research. However, the two forms have not been compared directly (i.e. head-to-head) in clinical trials. 

Here’s what the current research shows: 

• In a clinical trial that lasted 64 weeks, the Wegovy pill produced an average weight loss of 13.6%.

• In a clinical trial that lasted 68 weeks, the Wegovy injection produced an average weight loss of 14.9%.

The Wegovy pill has strict timing requirements, while the Wegovy injection only needs to be taken on the same day each week. 

For the Wegovy pill, you must:

• Take it first thing in the morning on an empty stomach.

• Swallow it whole with up to 4 ounces of water. Do not crush, split, chew, or dissolve the pill.

• Wait at least 30 minutes before eating, drinking, or taking other medications. 

For the Wegovy injection, you only need to take it on the same day each week. The specific time of day is not important, and you don’t need to worry about when you eat, drink, or take other medications.

The Wegovy pill should be stored at room temperature in its original bottle. The Wegovy injection should be refrigerated, although it can be stored at room temperature, if needed, for a limited amount of time. 

Storage for the Wegovy pill:

• The Wegovy pills should be stored in their original bottle at room temperature of 68°F–77°F (20°C–25°C). 

• They can be temporarily moved at higher (86°F or 30°C) or lower temperatures (59°F or 15°C) if needed.

• The pills should be stored in a dry place away from moisture.

Storage for the Wegovy injection:

• Ideally, the Wegovy pens should be stored in their original carton in the refrigerator at 36°F–46°F (2°C–8°C).

• If needed, they can be stored at room temperature of 46°F–86°F (8°C–30°C) for up to 28 days.

Never freeze Wegovy pens or tablets. Store Wegovy in a dry place away from direct light and extreme temperatures.

Since they both contain semaglutide as their active ingredient, the Wegovy pill and injection have similar side effects. The only difference is that the Wegovy injection may also cause injection site reactions (such as redness, irritation, or discomfort).

The most common side effects of Wegovy include:

• Nausea

• Abdominal pain 

• Diarrhea

• Vomiting

• Constipation

While rare, Wegovy can cause serious side effects, including:

• Acute pancreatitis

• Diabetic retinopathy complications (diabetes-related vision changes)

• Hypoglycemia (low blood sugar), especially when used with insulin

• Kidney or gallbladder problems

• Severe gastrointestinal reactions

• Allergic reactions

• Increased heart rate

• Pulmonary aspiration during general anesthesia or deep sedation

The Wegovy pill and injection, and other medications containing semaglutide, such as Ozempic and Rybelsus, carry a boxed warning for thyroid tumors based on animal studies. It’s unknown if the medication has the same effect in humans, but people with a personal or family history of thyroid cancer should not take any form of oral or injectable semaglutide. 

People who are pregnant, breastfeeding, or planning to conceive should also not take Wegovy.

Yes, you can switch between the Wegovy pill and injection. Some people may tolerate one form of the medication better than the other. Or your insurance coverage or personal preferences may change. 

It’s generally recommended to switch once you’re already taking a maintenance dose of the medication (25 mg for the Wegovy pill, 1.7 mg or 2.4 mg for the Wegovy injection).

To switch from the Wegovy pill to the injection, start the injection the day after you stop taking the pill. 

• If you were handling 25 mg fine, your healthcare provider may start you on 2.4 mg of Wegovy injection.

• If the 25 mg pill was giving you trouble, they may start you on 1.7 mg of the injection. 

• Once you make the switch, you’ll follow a weekly administration schedule. Meaning, you’ll take Wegovy on the same day each week (vs. daily in the morning, as is the case for the pill). 

To switch from the Wegovy injection to the pill, start the pill one week after you stop the injection. 

• Once you make the switch, you’ll likely start taking 25 mg daily. 

Always follow your healthcare provider’s guidance when switching between the Wegovy pill and injection.

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The Wegovy pill and injection are both effective, safe medications for weight loss and other conditions. The right choice for you depends on your lifestyle, insurance coverage, and other health conditions.

The Wegovy pill may be better if you:

• Have a fear of needles

• Like the routine of taking a daily pill

• Can wait to eat, drink, or take other medications in the morning

• Don’t want to worry about refrigerating your medication

• Don’t want to deal with disposing of needles in an FDA-approved sharps container

• Pay cash for your prescriptions

The Wegovy injection may be better if you:

• Prefer the flexibility of once-weekly dosing, as opposed to daily

• Don’t want to wait to eat, drink, or take other medications in the morning

• Want larger weight loss results

• Have fatty liver disease (MASH)

• Have better insurance coverage for the Wegovy injection vs. pill

Deciding between the Wegovy pill vs. injection ultimately depends on your personal preferences, budget, and health goals. Both forms are effective and safe, but they have some key differences.

• The Wegovy pill and injection both contain semaglutide as their active ingredient and cause similar side effects.

• Research suggests the Wegovy injection produces slightly greater weight loss (14.9%) compared to the pill (13.6%) over a similar time period.

• The Wegovy injection offers flexibility with a once-weekly dose at any time of day, whereas the pill must be taken every morning on an empty stomach.

• If you are paying out of pocket, the Wegovy pill is the more affordable option, costing $149–$299 per month vs. $199–$349 for the injection.

• The pill should be stored at room temperature, making it travel-friendly, while the injection pens generally need to be kept in the refrigerator.