Semaglutide Dosage Chart: The Full Weekly Step-Up

People search for a semaglutide dosage chart because the dose is not one number. It climbs in small steps over months. This guide lays out the standard clinical step-up, shows how a mg dose turns into syringe units, explains what happens at each stage, and answers the common questions. It reports known information for education. It is not a dose plan, and Genix does not sell semaglutide.

The quick answer

Semaglutide is given once a week, and the dose steps up slowly. For weight, the standard clinical schedule starts at 0.25 mg, then rises to 0.5, 1.0, 1.7, and up to a 2.4 mg maintenance dose. Each step is usually held about four weeks. The slow climb keeps stomach side effects milder. This is the known schedule, not a plan for any one person.

A quick word on names. Semaglutide is the drug. Wegovy is the brand used for weight, and Ozempic is the brand used for type 2 diabetes. The two brands use slightly different top doses, which we cover below. Compounded semaglutide is a mixed-to-order version, often sold in a vial you draw from, and it needs its own unit math.

What is semaglutide and how does it work?

Semaglutide is a GLP-1 receptor agonist. That is a long name for a simple idea. Your gut makes a hormone called GLP-1 after you eat. It tells the brain you are full and helps manage blood sugar. Semaglutide is a lab-made copy that acts like that hormone, but lasts far longer.

Because it copies a natural fullness signal, it does three main things. It slows how fast the stomach empties, so meals feel filling for longer. It quiets appetite and food noise, so smaller meals satisfy. And it helps the body handle sugar, which is why it is also used in diabetes. The dose chart exists because that signal is strong, and the body needs time to meet it gently.

This is also why the side effects are mostly in the stomach. A drug that works on gut signals and slows digestion will, at first, make the gut complain. The slow step-up is the answer to that. It lets the strong signal settle in a little at a time.

The semaglutide dosage chart

Here is the standard weight-loss step-up, laid out simply. The starting dose is low on purpose. It is not meant to be the working dose. It is a gentle start so the body can adjust before the dose does any real work.

Read the chart as a ladder, not a target. The plan is to move up only when the current step feels settled. If a step brings strong nausea, the usual clinical answer is to wait longer before climbing, or to hold. Nobody is required to reach 2.4 mg. Many people find their spot lower down.

Weight doses vs diabetes doses

Semaglutide is used for two different goals, and the top doses differ. For weight, the schedule climbs to 2.4 mg a week. For type 2 diabetes, the labeled schedule tops out lower, at 2.0 mg a week, and often works well at 1.0 mg. The early steps look similar. The ceiling is the main difference.

Why the gap? The weight schedule was studied at a higher dose because more appetite change was the goal. The diabetes schedule was built mostly around blood sugar, where a lower dose often does the job. Both still start at the same gentle 0.25 mg, and both step up the same careful way.

Why does the dose step up slowly?

The main reason is comfort. Like all GLP-1 style compounds, semaglutide can upset the stomach, most at the start and at each step up. A slow climb gives the gut time to adjust. That keeps nausea milder and helps people stay on the schedule instead of quitting in week two.

There is a second reason, and it is about how the drug behaves in the body. Semaglutide has a long half-life, close to one week. That means it clears very slowly and builds up over the first several doses. Stepping up slowly stops the level from rising too fast, which would make side effects spike.

What each step actually does

Each rung on the ladder has a job. Knowing the job makes the chart less confusing and the wait between steps easier to understand.

The 0.25 mg start

This first dose is about tolerance, not results. Most people notice little appetite change here. That is normal and expected. The point is to let the body meet the drug gently, so the next steps land softer.

The 0.5 mg step

This is the first level that starts to do real work. Appetite often begins to quiet here. Some people feel satisfied on smaller meals for the first time. Side effects can tick up for a week or two after the increase, then usually settle.

The 1.0 mg step

Many people find a comfortable working level around here. In diabetes use, this is a common long-term dose. For weight, it is often a strong step but not always the last one. Whether to climb higher depends on how things are going, and that is a clinician call.

The 1.7 mg and 2.4 mg steps

These upper steps exist for the weight schedule. They push appetite change further for people who tolerate the climb. Not everyone needs them. Higher is not automatically better, and the gap in results between 1.0 mg and 2.4 mg is smaller than many expect.

How to turn mg into units

This is the part that confuses people most, especially with compounded vials. A prefilled pen is dialed in mg, so you never do math. But a vial is drawn with an insulin syringe, and that syringe is marked in units, not mg. Units and mg are not the same thing.

Here is the simple idea. Milligrams measure the drug. Units measure the volume you pull into the syringe. To go from one to the other, you need to know the vial concentration, written as mg per mL. That number tells you how much drug sits in each mL of liquid.

Because the answer depends on how a specific vial was mixed, there is no single universal units number. A vial mixed at a stronger concentration needs fewer units for the same mg. A weaker one needs more. This is exactly why compounded semaglutide comes with its own dosing card, and why guessing is risky.

For the full walk-through with the arithmetic, see our guide to how to calculate peptide dosage, which uses the same mg, mL, and units logic that applies to any drawn-from-a-vial compound.

Worked examples: mg, mL, and units

Seeing the math once makes it click. The table below shows how the same mg dose becomes a different unit number at different vial concentrations. These are worked examples for education, using round numbers. Your own vial's card is the only one that counts.

Remember the rule: units equal the mg you want, divided by the vial's mg per mL, times 100. So a 0.25 mg dose from a vial mixed at 2.5 mg per mL is 0.25 divided by 2.5, times 100, which is 10 units.

A note on the 1 mg/mL column. A 240-unit draw is more than a standard 100-unit insulin syringe holds, so a stronger vial is often used for the higher doses. This is the kind of detail a compounding pharmacy sets on the dosing card, and another reason the concentration on the label matters so much.

The common units mistakes

Most dosing errors with a drawn vial come from a handful of mix-ups. Knowing them is how you avoid them. Each one traces back to treating units as if they were the drug.

• Reusing a units number from a vial with a different concentration.
• Confusing units with milligrams, so drawing far too much or too little.
• Ignoring the mg per mL on the label and guessing from a video.
• Assuming every pharmacy mixes to the same strength. They do not.
• Not double-checking the draw against the pharmacy's own dosing card.

Compounded semaglutide and the mg/mL question

Compounded semaglutide is mixed by a pharmacy rather than sold as a branded pen. It usually arrives as a vial with a concentration printed on it, such as a set number of mg per mL. Two vials with the same total mg can hold different volumes, so the units you draw will differ.

• The label lists a concentration, in mg per mL. Read it first.
• The same mg dose is a different unit count at a different concentration.
• A dosing card from the pharmacy should match your exact vial.
• Never reuse a units number from a different vial or brand.
• If the numbers do not match the card, ask the pharmacy, not a forum.

The takeaway is simple. With any vial you draw from, the concentration is the key. This is the same care we apply to research peptides, where the reconstitution volume you add sets the concentration, and the concentration sets the units. Precision here is not fussy. It is how you avoid drawing the wrong amount.

Side effects at each dose, and what to expect

Side effects are the reason the chart climbs slowly. Most are stomach-related, and most are worst in the days right after a step up, then fade. Knowing the pattern helps people tell a normal adjustment from a real problem.

The common side effects

• Nausea, the most common, usually mild and short.
• Constipation or diarrhea, often shifting over time.
• Reflux, burping, or a full feeling after small meals.
• Tiredness, especially early or after a step up.
• Occasional headache as the body adjusts.

Simple ways nausea is usually managed

The standard, common-sense steps are the same ones clinicians suggest. They are about eating habits, not extra medicine, though a doctor may add support if needed.

• Eating smaller meals and stopping at the first sign of full.
• Easing off very greasy or heavy foods for a while.
• Drinking water through the day.
• Not rushing the next step up if the last one still stings.
• Telling the prescriber if vomiting or pain is strong or lasting.

The rare but serious ones

Most side effects are mild and pass. A few are rare but worth knowing, because they are the reason this is a monitored medicine. These are not common, and this is not a scare list. It is the short set of signals that clinicians tell people to take seriously.

• Gallbladder trouble, which can show as pain in the upper right belly.
• Pancreatitis, a rare severe belly pain that bores into the back.
• Signs of dehydration from strong or ongoing vomiting.
• A known thyroid tumor warning that comes with this drug class.
• Any allergic reaction, like swelling or trouble breathing.

What is the maximum dose of semaglutide?

For weight, the standard maximum is 2.4 mg once a week. For type 2 diabetes, the labeled maximum is 2.0 mg once a week. Those are the ceilings in the studied schedules. They are the top of the chart, not a badge to earn.

You may see talk of higher doses online. Going above the labeled maximum is not part of the standard schedule. It is an off-label decision that belongs only with a clinician who can weigh it against the person in front of them. We report the standard ceilings here for education, and nothing above them.

Why the same dose can feel stronger the second week

This surprises a lot of people. You take a dose, feel fine, then feel more of it a week later without changing anything. The reason is the long half-life. Semaglutide clears slowly, so the level in the body keeps rising over the first doses of a new step before it levels off.

Think of it like filling a tub while a slow drain runs. Each weekly dose adds more than the drain removes at first, so the level climbs for several weeks until the two balance. That rising level is why the second or third week at a new dose can feel stronger than the first. It is expected, and it settles.

Plateaus, and why a plateau is not automatically a dose problem

Weight change rarely moves in a straight line. Plateaus are common and normal. It is tempting to read a stall as a sign the dose is too low, but that is often not the case. The body adjusts, and progress can pause even when everything is being done right.

• Sleep, stress, and food all move the number week to week.
• A pause of a few weeks does not mean the dose stopped working.
• Sometimes holding the current dose is the right move.
• A higher dose is a clinician decision, not a reflex.
• Muscle-supporting protein and activity matter alongside any dose.

The healthy way to read a plateau is as a checkpoint, not an alarm. A clinician looks at the whole picture before changing anything. Chasing the next dose on your own is exactly the pattern the slow schedule is built to avoid.

What if a dose is missed?

The general clinical guidance is that a missed weekly dose can often be taken within a few days, then the normal weekly schedule resumes. If it is close to the next scheduled dose, one is usually skipped rather than doubled. The exact rule depends on the brand and the person, so this is a question for the prescribing clinician, not a blog.

Can you change your injection day?

In clinical use, the weekly day can usually be moved, as long as there are at least a couple of days between doses. People shift it to fit travel or a routine. Any change should be checked with the prescriber, since the spacing between doses is what keeps the level steady.

How do you know if a dose is too high?

Signs that a step may be too strong are usually stomach-related. Strong nausea, vomiting, or being unable to eat normally are the common flags. Feeling wiped out, lightheaded, or unable to keep water down can also signal it. The usual clinical answer is to slow the step-up or hold, not to push through.

• Strong or lasting nausea and vomiting.
• Not being able to eat or drink normally.
• Feeling very tired, dizzy, or lightheaded.
• Belly pain that does not ease off.
• The usual fix is a slower climb, guided by a clinician.

What is worth monitoring on the schedule

A dose chart is only half the picture. In clinical care, people are not just following numbers on a syringe. A clinician tends to keep an eye on a few things over the months, especially as the dose climbs.

None of that is something a chart can do. It is why the standard advice, even from the pages that publish these schedules, is that semaglutide works best as a high-touch, monitored process rather than a set-and-forget number.

How the process usually starts

People often ask what getting started looks like, since the chart alone does not show it. In clinical care, it is a guided process, not a self-serve one. The chart is the map, but a clinician drives the car. Here is the shape of it, described for education.

• A clinician reviews health history and whether it is a fit.
• The schedule starts at the gentle 0.25 mg step, once weekly.
• The dose holds about four weeks, then steps up if it is tolerated.
• Side effects and progress are checked before each increase.
• The climb stops at whatever level works, not always the top.

The reason this is not a blog you dose from is right there in the steps. Every increase is a judgment call about a real person, made by someone who can see the whole picture. That is what the standard schedule assumes, and it is why a chart is a map and not a prescription.

How to support results alongside the schedule

A dose does not work alone. The people who do best treat the schedule as one part of a bigger routine. None of this is medical advice, but these are the common-sense habits that clinicians raise again and again, especially because appetite drops so much.

The theme is simple. When appetite quiets, it gets easy to under-eat protein and lose muscle along with fat. The schedule handles appetite. The routine around it protects the parts of the body you want to keep. Both matter, and neither is a number on a syringe.

How semaglutide compares to tirzepatide and retatrutide

Semaglutide hits one target, the GLP-1 receptor. Tirzepatide hits two, adding a GIP signal. Retatrutide, the newer research peptide, hits three, adding a glucagon signal that raises energy burn. All three use a slow weekly step-up. The extra targets are why the newer compounds moved more weight in studies.

The mg numbers are not comparable across compounds. A 2.4 mg semaglutide dose and a 12 mg retatrutide dose are not the same strength in any simple way, because the molecules differ. For the full breakdown, see our semaglutide vs tirzepatide guide, the tirzepatide dosage chart, and our guide to retatrutide dosing.

Why purity matters for any dosing

Any dose chart only means something if the vial holds what the label says. If the real amount is off, every units calculation built on it is off too. For research peptides, that is why a certificate of analysis matters so much. It ties the label to a tested number.

A Genix batch COA shows HPLC purity of at least 99%, LC-MS identity to confirm the molecule, and a lot number that matches your vial. That is the difference between a real concentration and a guess. When you are dividing mg by mg per mL to find units, you want the mg to be real.

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Frequently asked questions

Takeaway

The semaglutide dosage chart is a slow, deliberate climb. For weight, it runs from 0.25 mg up to 2.4 mg once a week, about four weeks per step, over roughly 16 to 20 weeks. The diabetes schedule tops out lower, at 2.0 mg. The low start is on purpose, to keep side effects mild while the long-acting drug builds up. A mg dose becomes units only once you know the vial's concentration. Higher is not always better, and plateaus are normal. This guide reports the known schedule for education, not as a dose plan. Genix does not sell semaglutide, and this is not medical advice.