GLP-1 shots versus pills, convenience or more weight loss

• Injectable GLP-1s have shown slightly higher effectiveness for weight loss in clinical trials compared to oral versions.
• Both forms share similar gastrointestinal side effects, such as nausea and diarrhea, which often lessen over time.
• The choice between a shot or a pill depends on a patient's lifestyle, medical history, and insurance coverage.

GLP-1 medications are available as both weekly injections and daily pills. The right option for you depends on your goals, your lifestyle and which medications you’re already taking.  

Choosing between GLP-1 shots and pills? Here is what you should know before you decide. 

What is the difference between GLP‑1 shots and pills? 

Both the GLP-1 injectable and oral forms mimic a natural hormone to regulate appetite, blood sugar and feeling full. How they enter the body is different, and that affects effectiveness and convenience. 

Injections have been around longer and remain the most widely used option. Pills are newer, with two options approved for weight management within the past year.  

How injectable GLP‑1s work  

Injectable GLP-1s are given as subcutaneous injections, meaning they’re delivered just beneath the skin using a small device shaped like a pen. You can typically get the injection in the backs of your arms, belly, upper buttocks or outer thighs. Most are taken once a week.  

“Injectable GLP-1s bypass the gut entirely, delivering the drug straight into the body, which is why they’ve been so effective and reliable,” says Abbas Kanani, superintendent pharmacist at ChemistClick, a U.K.-based online pharmacy. 

Common GLP‑1 shots  

• Semaglutide (Ozempic, Wegovy): Once a week 
• Tirzepatide (Mounjaro, Zepbound): Once a week 
• Liraglutide (Victoza, Saxenda): Once a day  
• Dulaglutide (Trulicity): Once a week 

How oral GLP‑1 medications work  

“Oral versions have to survive stomach acid, get absorbed through the gut wall and reach the bloodstream in enough quantity to work, all of which is surprisingly difficult, especially for larger peptide drugs,” says Kanani.  

There are currently two types of oral GLP-1s. Peptide-based pills — such as oral Wegovy — use larger molecules that require strict timing and fasting to absorb properly. Small-molecule drugs, such as Foundayo, are designed to absorb more consistently and come with fewer fasting restrictions. 

Common GLP‑1 pills  

• Semaglutide (Wegovy): Once a day, taken on an empty stomach 
• Orforglipron (Foundayo): Once a day, can be taken with or without food 

Effectiveness of GLP‑1 shots versus pills 

According to Yale Medicine, injectable GLP-1s have outperformed pills in clinical trials, but the difference is smaller than you might expect. The oral Wegovy pill produced an average weight loss of 13.6% over 64 weeks, compared to roughly 15% for the injectable version over 71 weeks. Wegovy HD came in higher, at 21% weight loss after 72 weeks. Foundayo came in at about 12% over a similar period.  

That gap may keep closing. “We’re now seeing clinical trial results where some oral options are getting much closer to injectable levels of weight loss,” Kanani says. “Injectables like Wegovy set a very high bar, and they remain the most consistent option we have today.” 

But for most patients, the best option isn’t necessarily the most powerful one.  

“Maximum weight loss is often not the goal,” says Dr. Carolynn Francavilla, an obesity medicine physician and vice president of the Obesity Medicine Association. She notes that individual treatment goals and possible side effects all factor into which option is most effective for each patient.  

Side effects and tolerability  

The good news if you’re debating GLP-1 shots versus pills is that the side effects of each are similar.  

Yale Medicine notes that gastrointestinal symptoms such as nausea, vomiting and diarrhea are the most common side effects for GLP-1s in pill and injectable forms. They tend to be mild to moderate, and are more common when starting treatment or after a dose increase. Side effects often improve as your body adjusts. 

If you’re considering the Wegovy pill, keep in mind that vomiting can prevent oral birth control from being fully absorbed. Foundayo has its own interaction concerns. 

“Foundayo does have a few medication interactions including simvastatin and birth control pills,” Francavilla says. “It’s important to let your doctor know which other medications you take before starting Foundayo to make sure they don’t interact.” Although there are no dosing limitations or interactions between Wegovy and statins (prescription medications designed to lower cholesterol and reduce the risk of heart attacks and strokes), the same advice goes for any new medication or version of GLP-1. Always let your doctor know which medications you currently take before starting a new one.

Cost and insurance coverage differences   

Out-of-pocket, pills generally run cheaper than injectables. Both the Wegovy pill and Foundayo start at $149 per month for self-pay patients at the lowest dose, compared to injectables that can exceed $1,300 per month without insurance.  

Insurance coverage rules generally follow the drug’s approved use, not its form. Plans that cover GLP-1s for diabetes or cardiovascular conditions will cover pills and injectables alike. However, check your plan’s drug list before assuming your cost will be the same.  

For a full breakdown of what insurance covers and what to do if you’re denied, see our guide to GLP-1 insurance coverage. 

Who might prefer GLP‑1 shots? 

Injectables may be a better fit if maximum weight loss is your priority. “Zepbound has the most dramatic weight loss on average,” Francavilla says, adding that it carries FDA approval for obstructive sleep apnea.  

Patients already managing five or more daily medications may also do better on a weekly shot. “The 30-minute fasting window for oral Wegovy will be skipped more times than not when you’re hungry in real life,” says Dr. James Chao, a board-certified physician specializing in medical weight loss and co-founder of VedaNu Wellness in San Diego, California.  

Who might prefer GLP‑1 pills?  

Pills are a natural fit if you’re needle-averse or travel frequently. Chao notes that needle anxiety often comes down to a simple question. 

“The conversation that almost everyone can benefit from having is whether your aversion to needles is physical (the needle itself) or mental (the process),” he says. “The needles used on today’s GLP-1 pens range from 4 to 6 millimeters long. This astonishes roughly 60% of our patients and a successful practice demonstration takes care of most patients with that concern.” 

Foundayo’s flexibility makes it an option for patients who can’t commit to a fasting window. “Between these two medication options, almost everyone who qualifies should be able to find an oral option that works for their health needs,” Francavilla says.  

How to talk to your provider about GLP‑1 options  

“These are very personalized conversations that need to be had with your physician,” Chao says. Come prepared to discuss the following with your doctor: 

• How much weight do I want or need to lose?  
• Do I have any conditions, such as sleep apnea or cardiovascular disease, that might influence which drug is right for me? 
• What other medications am I taking, and could they interact with GLP-1 medication? 
• Do I have a preference for a daily pill or weekly injection? 
• What does my insurance cover? 

Frequently asked questions  

Are GLP‑1 pills as effective as shots?  

Close, but not quite. According to Yale Medicine, injectable GLP-1s have a slight edge in clinical trials. The oral Wegovy pill resulted in an average weight loss of 13.6% compared to roughly 15% for the injectable version over a similar period.  

Are GLP-1 pills covered by insurance?  

Coverage depends on your plan and what condition you’re treating. Insurance is more likely to cover GLP-1s for type 2 diabetes or cardiovascular disease than for weight loss, regardless of whether you take a pill or injection.  

(This story was updated to add new information)

GLP-1 medications provide important safety information on their websites, including possible side effects from taking the drug. Always seek the advice of your physician or other qualified healthcare provider concerning questions you have before starting, stopping or modifying any treatment or medication.