Semaglutide: the complete guide
What semaglutide is, how a single gut hormone signal quiets appetite, what to expect month by month, how dosing steps up, side effects, who qualifies and what it costs. Written for people who want the facts before they talk to a provider.
- LegitScript certified
- U.S. licensed providers
- Prescribed online
- From $152/mo
Quick answer
Semaglutide is a once weekly injection that mimics GLP-1, a gut hormone that lowers appetite, slows digestion and steadies blood sugar. In clinical trials people lost around 15 percent of their body weight over 68 weeks. It is prescribed by a licensed provider, starts low and steps up every 4 weeks. At PepHaus, compounded semaglutide is from $152 per month with the provider visit, supplies and shipping included.
Ready to start instead of read? How to get semaglutide online walks through the visit, who qualifies and the cost in three steps.
What semaglutide is
Semaglutide is a synthetic peptide that mimics GLP-1 (glucagon like peptide 1), a hormone your gut releases after eating. It was first approved for type 2 diabetes and later for chronic weight management, and it is the most prescribed GLP-1 medication in the world.
Compounded semaglutide is the same active molecule prepared for an individual patient by a licensed 503A compounding pharmacy under a provider's prescription. That is what PepHaus ships: a vial, ready to use, with a Certificate of Analysis on every batch.
How it works
- Appetite drops. GLP-1 acts on the brain's appetite centers. The constant pull toward food fades and portions shrink without a fight.
- Digestion slows. Food leaves the stomach more slowly, so a normal meal keeps you full for hours.
- Blood sugar steadies. Insulin release improves after meals and glucagon is held back, so the spikes and crashes that drive cravings flatten out.
- The dose steps up gradually. The body adjusts one stage at a time, which keeps side effects manageable.
Semaglutide vs tirzepatide
| Semaglutide | Tirzepatide | |
|---|---|---|
| Hormones mimicked | GLP-1 | GIP and GLP-1 |
| Average weight loss in trials | Around 15 percent of body weight over 68 weeks | Around 20 percent at the highest dose over 72 weeks |
| Track record | Longest of any GLP-1 for weight | Newer |
| Injection | Once weekly | Once weekly |
| PepHaus price | From $152/mo | From $215/mo |
Semaglutide is the lower cost starting point with the longest history. Tirzepatide adds a second hormone signal and produced more weight loss in trials. Many people start on semaglutide and move up only if they plateau. Full comparison on the tirzepatide guide.
Who semaglutide is for
Diet and exercise alone stalled
You have done the work and the scale will not move. Semaglutide changes the appetite signal, not your willpower.
Food noise runs the day
Constant thoughts about the next meal. Most people say this is the first thing that goes quiet.
20 to 50 pounds to lose
The range where semaglutide's trial results land for most people.
Watching the budget
The lowest monthly price of the two GLP-1 options, with the longest track record.
Blood sugar or prediabetes in the picture
The original use of semaglutide was glucose control. Weight loss came with it.
Want a provider, not a forum
A licensed provider sets the dose, adjusts it and answers questions in your portal.
Providers generally prescribe for a BMI of 30 or higher, or 27 or higher with a weight related condition. Eligibility is confirmed during your online visit.
What to expect, month by month
Individual results vary. This is the pattern most people describe.
| When | What people commonly report |
|---|---|
| Week 1 to 4 | Starting dose. Appetite noticeably lower, some nausea in the first days after each shot. Early water weight comes off. |
| Month 2 to 3 | Dose steps up. Steady loss, usually around 1 pound a week for people who keep protein up and eat when hungry. |
| Month 4 to 6 | Reaching a maintenance dose. Clothes fit differently, energy steadier, cravings mostly gone. |
| Month 6 and beyond | Continued loss at a slower pace, then maintenance. Providers plan for a 6 month course minimum before judging results. |
Dosing and titration
- Once a week, same day each week. Any time of day, with or without food.
- Starts low. The first 4 weeks are a starting dose that lets the gut adjust. It is not meant to be the dose you lose weight on.
- Steps up every 4 weeks as tolerated, set by your provider, until you reach a dose that works for you.
- Subcutaneous. Belly, thigh or upper arm, rotating sites. Insulin size needle.
- Missed a dose? Take it within 5 days, otherwise skip and stay on schedule. Never double up.
- Storage. Keep refrigerated. PepHaus vials ship cold and ready to use, no mixing.
Exact milligram amounts are set during your provider visit and adjusted to your response. A dose you read about online is someone else's prescription.
Side effects and safety
Most side effects are digestive and show up in the first weeks or right after a dose increase, then fade as the body adjusts. What gets reported:
- Common: nausea, constipation or diarrhea, reduced appetite, mild stomach discomfort, injection site redness, fatigue in the first weeks.
- Less common: heartburn, dizziness, headache, hair shedding during fast weight loss.
- Tell your provider right away about: severe stomach pain that does not pass, vomiting that will not stop, signs of dehydration, or a lump in the neck.
Semaglutide is not appropriate for everyone. People with a personal or family history of medullary thyroid cancer or MEN2, a history of pancreatitis, or who are pregnant, planning pregnancy or breastfeeding are generally not candidates. A licensed provider reviews your full history before anything is prescribed, and $0 is charged until you are approved.
What semaglutide costs
6-Month Plan
Billed $912.60 every 6 months. Save $101. Matches the window where results build.
Quarterly Plan
Billed $481.65 every 3 months. Save $25 compared with monthly.
Monthly
Billed monthly. Most flexible.
Every plan includes the provider visit, a 30-day supply of compounded semaglutide, supplies, a Certificate of Analysis on every vial and free expedited shipping. No insurance needed. Full breakdown on the semaglutide cost page.
Frequently asked questions
What is semaglutide?
Semaglutide is a once weekly injectable peptide that mimics the gut hormone GLP-1 to lower appetite, slow digestion and steady blood sugar. It is prescribed for weight management and type 2 diabetes.
How much weight can you lose on semaglutide?
In clinical trials, people lost around 15 percent of their body weight over 68 weeks alongside diet and exercise. Individual results vary and depend on dose, consistency and habits.
Is compounded semaglutide the same as the brand name?
It is the same active molecule, prepared for an individual patient by a licensed 503A compounding pharmacy under a provider's prescription. Compounded medications are not FDA approved products. Every PepHaus vial ships with a Certificate of Analysis.
Semaglutide or tirzepatide, which is better?
Tirzepatide produced more weight loss in head to head trials. Semaglutide costs less and has the longer track record. Many people start on semaglutide and step up only if they plateau. Your provider helps you choose.
How do you take semaglutide?
One subcutaneous injection a week, any time of day. Providers start at a low dose and step it up every 4 weeks as tolerated.
What are the side effects of semaglutide?
Mostly digestive: nausea, constipation or diarrhea, reduced appetite and stomach discomfort, usually in the first weeks or after a dose increase. Severe stomach pain, persistent vomiting or a neck lump need a provider right away.
Who should not take semaglutide?
People with a personal or family history of medullary thyroid cancer or MEN2, a history of pancreatitis, or who are pregnant or breastfeeding, among others. A licensed provider reviews your history first.
How much does semaglutide cost?
At PepHaus, compounded semaglutide is from $152 per month on the 6-month plan, $160 quarterly, or $169 monthly, with the provider visit, supplies and free shipping included.
Do I need insurance?
No. PepHaus is cash pay. One flat monthly price covers the visit, the medication, supplies and shipping.
Latest semaglutide articles
New articles on semaglutide are published on the PepHaus journal every day.
- Semaglutide Price Without Insurance: What You Pay
- Semaglutide Near Me Within 5 Miles: Start From Home
- Semaglutide Online: How to Get Your Prescription and Start
- Compounded Semaglutide Cost With Insurance: What You Actually Pay
- Semaglutide Near Me Now: Start From Home Instead
- Semaglutide Prescription Without Insurance: What You Pay
- Get Compounded Semaglutide Near Me: Start Online Instead
- Semaglutide Online Cheap: What You Actually Pay in 2026
- How to Get Semaglutide to Work Again: Plateau Tips
- Semaglutide Prescription Near Me: Start From Home
See if semaglutide is right for you
A short online visit, a licensed provider review, and nothing charged until you are approved.
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