Top Story
New Shots Help People Lose Weight. Here Is What We Know.
These drugs work better than any diet pill before them. But they also come with real problems. We explain both sides in plain words.
How These Drugs Actually Work
Your gut sends messages that say you are full. These drugs copy them.
How Much Weight Did People Lose?
One chart, seven drugs, plus the fake shot so you can compare.
Four Things People Wish They Had Known
Upset stomachs, lost muscle, weight coming back, and risky copies.How They Work
Full drug pageYour gut sends messages. These drugs copy them.
Your gut talks to your brain
When you eat, your gut makes hormones. A hormone is a chemical message. It travels through your blood to your brain.
One message says "you are full"
That message is called GLP-1. It tells your brain you have had enough. It also slows down how fast food leaves your stomach.
The drug copies that message
So your brain gets the full signal sooner. You eat less without trying as hard. The drug does not burn fat. It changes how hungry you feel.
Newer ones copy two or three
Those seem to work even better. Scientists are still not sure why. They have good guesses. They do not have a full answer yet.
By The Numbers
See all 12 drugsEach bar shows the average in one test. The last bar is the fake shot, so you can see what happens with no drug at all.
Read this before you compare
These numbers come from different tests. The tests used different people. Some ran longer than others. So this is a rough guide, not a race. No one has tested all of these drugs against each other at the same time.
Be Careful
More on side effectsFour things people wish they had known before they started.
Side effects
Your stomach may feel awful
This is the most common problem by far. People feel sick. Some throw up. Some get diarrhea. It is worst when you first start. For most people it fades. For some it does not, and they quit.
Muscle
You lose muscle, not just fat
About one quarter of the weight people lose is muscle. That happens with most kinds of weight loss. Doctors say to eat enough protein and lift weights to keep what you can.
Stopping
The weight comes back if you stop
One study followed people for a year after they stopped. They gained back about two thirds of what they had lost. Doctors now treat these like blood pressure pills. You take them for a long time.
Copies sold online can be dangerous
Some sellers offer cheap copies. They are not checked the same way real drugs are. Health officials have found wrong ingredients and wrong amounts. People have been hurt. Get these from a real doctor and a real pharmacy.
Latest News
See all news
Rules
Cheap Copies Are Being Shut Down
For a while there was a shortage. That let other pharmacies make copies. The shortage ended in 2025. So most of those copies are no longer allowed.
Read more
Heart health
A Big Test Found Fewer Heart Attacks
More than 17,000 people took part. Those on the drug had about 20 percent fewer heart attacks and strokes. That changed how doctors think about these drugs.
Read moreQuestions People Ask
About usDo I have to take a shot?
Most of these drugs are shots. The needle is very small. It goes under the skin, not into a vein. Most people take one a week.
A few pills exist too. One pill is for diabetes right now. Another new pill is still being tested for weight.
Will I lose as much as the people in the tests?
Maybe not. People in tests get a lot of help. Nurses check on them. They get support with food and exercise.
In real life, people lose less on average. A big reason is that many stop early. They stop because of cost, side effects, or trouble getting the drug.
Are these drugs safe?
For most people in the tests, yes. But no drug is safe for everyone.
Stomach problems are common. Rare but serious problems include pancreas trouble and gallbladder trouble. There is also a warning about a rare thyroid cancer. It showed up in rats, not people. Even so, people with certain thyroid cancers in the family should not take these.
Talk to a doctor who knows your health history. That is the only real answer.
Why are they so expensive?
They are new, and they are still under patent. That means one company gets to make each one for now.
Some insurance plans pay for them. Many do not. That is one of the biggest fights in health care right now.
Who writes this website?
A small team that reads the studies and writes them in plain words. We do not sell anything. No drug company pays us. You can read more on our About Us page.
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