A semaglutide B12 dosage chart shows how to titrate weekly. Learn how concentration changes units, and why you should never adjust without a prescriber.
A semaglutide B12 dosage chart is a weekly titration schedule, not a single fixed dose. Most charts start at 0.25 mg per week for four weeks, then increase stepwise to 0.5 mg, 1 mg, 1.7 mg, and up to 2.4 mg, depending on tolerance and your prescriber's instructions. The exact number of units you draw depends on the concentration of your vial, which is why two people with the same chart can inject different volumes.
What a Semaglutide B12 Dosage Chart Shows
A complete chart usually lists the week number, the semaglutide dose in milligrams, the volume in milliliters, and the corresponding units on a U-100 insulin syringe. Some charts also note the amount of vitamin B12 (cyanocobalamin) included in the formulation.
B12 does not change the semaglutide titration. It is added to compounded versions for convenience or to address a deficiency, but the active weight-management ingredient is still semaglutide.
- Week: the step in the titration schedule.
- Semaglutide dose (mg): the amount of active drug.
- Volume (mL): how much liquid to draw.
- Units: the marking on your syringe (100 units = 1 mL).
- B12 amount (mcg): if listed, the vitamin dose in the same injection.
A dosage chart for semaglutide from a compounding pharmacy should always state the concentration on the vial label. Without that number, the unit column is meaningless.
Typical Titration Schedule for Semaglutide With B12
Most prescribers follow the same step-up pattern used by FDA-approved Wegovy. Compounded semaglutide with B12 often mirrors this schedule, though your clinician may adjust it based on side effects or other health factors.
| Weeks | Semaglutide dose | Goal |
|---|---|---|
| 1–4 | 0.25 mg | Starting dose to build tolerance |
| 5–8 | 0.5 mg | First increase |
| 9–12 | 1 mg | Intermediate dose |
| 13–16 | 1.7 mg | Higher maintenance |
| 17+ | 2.4 mg | Target maintenance dose |
This table shows milligrams only. To convert to units, you need the concentration of your specific vial. A 5 mg/mL vial and a 2.5 mg/mL vial will produce very different unit numbers for the same milligram dose.
Why Concentration Changes Everything: mg vs. Units
Compounded semaglutide comes in several concentrations. The most common are 2.5 mg/mL, 5 mg/mL, and 10 mg/mL. The same milligram dose requires a different volume—and therefore a different number of units—at each concentration.
| Dose (mg) | 2.5 mg/mL (units) | 5 mg/mL (units) | 10 mg/mL (units) |
|---|---|---|---|
| 0.25 mg | 10 units | 5 units | 2.5 units |
| 0.5 mg | 20 units | 10 units | 5 units |
| 1 mg | 40 units | 20 units | 10 units |
| 1.7 mg | 68 units | 34 units | 17 units |
| 2.4 mg | 96 units | 48 units | 24 units |
If you have a semaglutide 5mg/ml dosage chart, your 0.25 mg dose equals 5 units. If your vial is 2.5 mg/mL, the same dose is 10 units. Always match the chart to the concentration printed on your vial, not to a chart you found online.
Many people look for a semaglutide weight loss dosage chart in units because syringes are marked in units, not milligrams. That is fine as long as the chart also states the concentration. A hims semaglutide dosage chart may use a different concentration than a local pharmacy's chart, so never copy someone else's numbers.
For example, a semaglutide 5mg 2ml dosage chart describes a vial with 5 mg of drug in 2 mL of liquid, which equals 2.5 mg/mL. That is half the concentration of a 5 mg/mL vial, so every unit dose would be doubled. Always read the label carefully.
How to Read Your Chart Safely
- Check the concentration. Confirm the mg/mL on your vial matches the chart.
- Check your syringe. Use a U-100 syringe unless your prescriber says otherwise.
- Confirm the dose. Ask your prescriber or pharmacist if the unit number seems wrong.
- Never adjust on your own. Do not skip ahead or increase faster than the chart allows.
Compounded semaglutide with B12 is not FDA-approved, and its dosing is not standardized across pharmacies. That means your chart is only valid for the exact vial you have in hand. If you switch pharmacies or concentrations, you need a new chart.
Common Mistakes With Semaglutide B12 Dosing
- Using a chart for a different concentration than your vial.
- Confusing milligrams with units (they are not the same).
- Assuming B12 changes the semaglutide dose (it does not).
- Increasing the dose faster than the recommended 4-week steps.
- Sharing charts with friends or online forums.
Side effects like nausea, vomiting, and diarrhea are most common during dose increases. Staying on each step for at least four weeks gives your body time to adjust.
When to Call Your Prescriber
Contact a healthcare professional if you have severe or persistent nausea, vomiting, abdominal pain, or signs of dehydration. Also call if you miss a dose or are unsure how many units to draw.
This article is for general information only and is not a substitute for medical advice. Your prescriber's instructions always take priority over any online chart.
RELATED PEPTIDE TOPICSemaglutide researchFrequently Asked Questions
How many units is 0.25 mg of semaglutide with B12?
The number of units depends on the concentration of your vial. At 5 mg/mL, 0.25 mg equals 5 units; at 2.5 mg/mL, it equals 10 units. Always check the concentration printed on your vial label before drawing a dose.
Does B12 change the semaglutide dosage?
No, B12 does not change the semaglutide titration. The semaglutide concentration in the vial determines how many units you draw for each milligram dose. B12 is added for convenience or to address a deficiency, not to alter the dosing schedule.
Is compounded semaglutide with B12 FDA-approved?
No, compounded semaglutide with B12 is not FDA-approved. The FDA-approved semaglutide products are Ozempic, Wegovy, and Rybelsus, and none of them contain B12. Compounded versions are not reviewed by the FDA for safety, effectiveness, or quality.
This page provides educational research information and does not replace medical advice, diagnosis, or treatment.