Semaglutide vs. Liraglutide: Same Drug Class, Different Verdict

Semaglutide or liraglutide: which one fits you?

Here is the short answer for each situation. The table above has the prices, and the sections below explain them.

• Cheapest, if you can pay a year upfront: compounded semaglutide from Fridays, about $150 a month. Compounded means a pharmacy mixes the drug. It is not FDA-approved.
• Cheapest FDA-approved option for weight loss: Wegovy, bought straight from Novo Nordisk through NovoCare. The pill starts at about $150 a month, with no insurance needed.
• Your insurance covers Wegovy: the Wegovy savings card can bring it to as little as $25 a month.
• You're on Medicare: the GLP-1 Bridge charges $50 a month for Wegovy if you meet its health rules. Saxenda is not part of it.
• You're already on Saxenda: plan your next step now, because last shipments go out in late January 2027. Generic Saxenda or a switch to semaglutide are the usual options.
• You're on Victoza and doing well: there is no urgent reason to switch. A weight plateau, or tiring of daily shots, is a fair moment to ask about semaglutide.
• Your plan covers liraglutide but not semaglutide: let coverage decide. A covered drug at your copay usually beats an uncovered one.

What's the real difference between semaglutide and liraglutide?

Both are GLP-1 drugs. They copy a gut hormone that slows digestion, helps release insulin after meals and quiets hunger. Both come from Novo Nordisk. But they are two separate molecules, not two strengths of one drug.

The key difference is how long each one lasts in the body. Liraglutide's half-life is about 13 hours. Half-life is the time the body takes to clear half of a dose. That is why liraglutide needs a shot every day. Semaglutide's half-life is about a week, so one shot a week is enough.

Is Ozempic semaglutide? Where do Wegovy and Saxenda fit?

Yes, Ozempic is semaglutide. Semaglutide is sold under two brand names, each with its own FDA approval. Ozempic treats type 2 diabetes, as a weekly shot or a daily pill. Wegovy is approved for weight management, also as a shot or a pill.

Liraglutide has two brands too. Victoza treats type 2 diabetes, and Saxenda is the weight-management version. Both are daily shots, and both now have generic versions.

• Victoza, liraglutide for type 2 diabetes: FDA-approved in 2010.
• Saxenda, liraglutide for weight management: approved in 2014.
• Ozempic, semaglutide for type 2 diabetes: approved in 2017.
• Wegovy, semaglutide for weight management: approved in 2021.

A compounding pharmacy can also prepare semaglutide or liraglutide outside these brands. The legal rules for that come further down.

Which works better for weight loss, semaglutide or liraglutide?

Semaglutide, and a real head-to-head trial backs that answer. Most GLP-1 comparisons rely on separate studies. The STEP 8 trial, published in JAMA in 2022, tested the two drugs side by side for 68 weeks.

STEP 8 enrolled 338 adults with overweight or obesity and no diabetes. About 78% were women. Their average age was 49, right in the menopause transition years. They took weekly semaglutide 2.4 mg or daily liraglutide 3 mg, with diet and activity advice.

• Semaglutide: about 15.8% of body weight lost, on average.
• Liraglutide: about 6.4% lost.
• Placebo, a dummy shot: about 1.9% lost.

So semaglutide gave more than twice the weight loss. The comparison between the two drugs was open-label, meaning people knew which drug they took. Each drug was still compared blind against its own placebo.

Each drug's own approval trial points the same way. In the SCALE trial, people on Saxenda 3 mg lost about 18 pounds in 56 weeks, against about 6 pounds on placebo. In STEP 1, people on Wegovy 2.4 mg lost about 14.9% of their weight in 68 weeks, against 2.4% on placebo.

These are averages. Your own result depends on your dose, how long you stay on it and your body.

Which costs less: semaglutide or liraglutide?

For weight loss, semaglutide costs less at almost every price level. It also has a cash program from its maker and a savings card for insured patients. Liraglutide has neither today.

Compounded semaglutide and compounded liraglutide

Fridays sells compounded semaglutide for about $150 a month on a year paid upfront. Month to month, it costs about $280. Coaching and a dietitian are included. Fridays' terms do not refund a prepaid year if you stop early. Its BBB profile also lists many unanswered complaints, mostly about refunds and late shipments.

Compounded liraglutide is harder to find. AgelessRx sells it for about $290 a month. The first shipment costs about $150 with a code on its site. It is not sold in Alabama, Arkansas, Minnesota or North Carolina.

So compounded liraglutide costs more than compounded semaglutide, for the drug with the smaller trial result. Neither compounded version is FDA-approved.

Brand semaglutide without insurance: Wegovy and Ozempic

Novo Nordisk sells both brands for cash through NovoCare, its own pharmacy program. The same prices also work at local pharmacies with Novo's savings offer. No insurance is needed.

• Wegovy pill: about $150 a month at the starting dose. It rises to about $300 at the higher doses.
• Wegovy pen: about $350 a month, or about $400 for the strongest 7.2 mg pen. New patients pay about $200 for the first 2 fills through Dec 31, 2026.
• Ozempic pen: about $350 a month up to 1 mg, and about $500 at 2 mg. The same first-2-fills offer applies.
• Ozempic pill: about $150 to $300 a month, depending on the dose.

Ozempic is a diabetes drug. Using it for weight loss is off-label, meaning for a use the FDA has not approved. Saxenda has no cash program like this, and its savings card closed to new patients on June 30, 2023.

Saxenda, Victoza and their generics

Saxenda's list price is about $1,350 a month. List price is the maker's price before any discount. The average pharmacy price is higher, about $1,900.

Saxenda is also on its way out. Novo Nordisk says last shipments to wholesalers will be in late January 2027. It calls this a portfolio decision, made as fewer people use Saxenda.

Generic Saxenda costs much less with a pharmacy coupon, a free discount card you show at the counter. The full 3 mg dose uses 5 pens a month. With a SingleCare coupon, that runs about $530 to $1,250, depending on the pharmacy.

Generic Victoza, the diabetes dose, is cheaper still. Two pens cover a month at 1.2 mg, for about $100 to $500 with a coupon. The 1.8 mg dose needs 3 pens, so it costs about half again. Brand Victoza costs far more, and the FDA lists its supply as limited.

With insurance, or on Medicare

If a private or work plan covers Wegovy, Novo's savings card can bring it to as little as $25 a month. Novo pays up to $100 a month. There is no savings card for Saxenda or Victoza now. With those, you pay your plan's copay, your fixed share for each fill.

Savings cards do not work with Medicare or Medicaid. On Medicare, the GLP-1 Bridge charges $50 a month for Wegovy if you meet its health rules. It runs from July 2026 to December 2027. Saxenda is not part of it.

What a year costs, by option

These totals follow how each option is really billed. Pen boxes last 28 days, so a year of pens means 13 fills.

• Fridays, compounded semaglutide: about $1,800 on a year paid upfront, or about $3,350 month to month.
• AgelessRx, compounded liraglutide: about $3,330 in the first year, counting the first shipment at about $150.
• Generic Victoza at 1.2 mg, with a coupon: about $1,200 to $6,100, depending on the pharmacy.
• Generic Saxenda at 3 mg, with a coupon: about $6,400 to $15,300.
• Brand Saxenda: a full year is no longer possible. Supply ends after January 2027.
• Wegovy pill, self-pay: about $3,340, moving up to the higher doses by the third month.
• Wegovy pen, self-pay: about $4,240 for a new patient who starts by Dec 31, 2026. That is 2 starter fills, then 11 at about $350.
• Ozempic pen, self-pay: about $4,240 up to 1 mg. Moving up to 2 mg by the fourth fill brings it to about $5,740.
• Wegovy with insurance and the savings card: about $325, at $25 a fill.

Saxenda is leaving: can you switch from liraglutide to semaglutide?

Yes, and it is a common switch. With Saxenda leaving the market, many women on it will make this move in the coming months.

There is no official dose conversion between the two drugs. They are different molecules, so a daily liraglutide dose does not match a weekly semaglutide dose. Semaglutide usually starts again at its lowest dose and steps up from there. The first weekly shot is timed around your last daily one, so the two do not overlap.

Side effects: is one easier to tolerate?

Both drugs cause the same kind of gut side effects, like nausea, diarrhea and constipation. Slower digestion is part of how they work, so these effects are common.

In STEP 8, gut side effects were about as common on both drugs. About 84% of people on semaglutide reported one. On liraglutide, it was about 83%.

Fewer people stopped semaglutide early, though. About 14% stopped it for any reason, not only side effects. On liraglutide, about 28% stopped.

No trial can predict which drug one woman will tolerate better. On both, gut effects tend to be strongest right after a dose increase.

Semaglutide pills vs. injections, and where liraglutide fits

Liraglutide comes only as a shot. Victoza, Saxenda and their generics are all daily pens. There is no FDA-approved liraglutide pill.

Semaglutide gives you more choice. Most people use the weekly pen, Ozempic or Wegovy. Two daily pills are also FDA-approved.

• Ozempic pill, for type 2 diabetes: 1.5, 4 or 9 mg a day. It is a new formula that replaced Rybelsus in the US on May 4, 2026. Its doses do not swap mg for mg with the old Rybelsus tablets.
• Wegovy pill, for weight management: 1.5, 4, 9 or 25 mg a day.
• Ozempic pen: 0.25 mg up to 2 mg once a week.
• Wegovy pen: 0.25 mg up to 2.4 mg once a week, plus a stronger 7.2 mg pen called Wegovy HD.

Both pills are taken in the morning on an empty stomach with a small sip of water. You then wait before eating or drinking.

Doses like 5 mg or 10 mg do not exist for any approved semaglutide product. Some telehealth companies sell compounded semaglutide tablets or drops. Those are not FDA-approved, and they are not copies of the Ozempic or Wegovy pill.

Is compounded semaglutide or liraglutide legal?

Yes, in narrow cases. Compounding means a pharmacy mixes a drug for a patient instead of a factory making it. During the semaglutide shortage, many pharmacies made copies at scale. The FDA declared that shortage over on February 21, 2025.

Since then, the main legal path is a 503A pharmacy. That is a state-licensed pharmacy that prepares a drug for one named patient, on a prescription. The prescriber has to note why a change from the approved drug makes a real medical difference for her.

Liraglutide's status is a little different. The FDA still lists liraglutide injection in its shortage database. Brand Saxenda and Victoza show limited supply there.

On April 30, 2026, the FDA proposed not to add semaglutide, tirzepatide or liraglutide to the 503B bulks list. That list lets larger outsourcing pharmacies compound from raw ingredients. Comments closed on July 30, 2026. No final decision had been announced as of October 22, 2026.

Both drugmakers have also sued telehealth companies, mostly over marketing claims and patents. Lilly's case against Willow was dismissed in February 2026, and Lilly has appealed.

In the end, the pharmacy and the prescriber matter most. Look for PCAB accreditation, an independent quality check for compounding pharmacies. Choose a provider who explains how they document your medical need.

Semaglutide vs. liraglutide for perimenopause and menopause weight gain

Falling estrogen in perimenopause tends to move fat toward the belly. It can also make the body respond less well to insulin.

Both drugs act on hunger and blood sugar, so both can help with that shift. No trial has compared them only in women in perimenopause or after menopause.

STEP 8 is still the closest evidence. Most of its volunteers were women around 49, though it was not designed around menopause status.

For most women at this stage, the bigger question is not which molecule. It is how a GLP-1 fits with hormone therapy and your other options.