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Semaglutide Dosage Guide — From Starting Dose to Maintenance
The titration schedule is the most misunderstood part of semaglutide treatment. Starting too fast causes unnecessary side effects. Staying too low delays results. Here's the complete dosage guide.
FuturWeightLoss Editorial Team·Updated May 2026·8 min read
The standard semaglutide dosing schedule
Semaglutide for weight loss follows a structured titration schedule — your dose increases every 4 weeks, giving your body time to adapt and minimizing side effects. This is not optional or flexible — it exists because jumping to high doses too quickly is the #1 cause of patients quitting due to nausea.
Weeks
Weekly dose
Purpose
Expected weight loss
Weeks 1–4
0.25mg
Tolerance building — not therapeutic
1–3 lbs
Weeks 5–8
0.5mg
First therapeutic dose — appetite changing
4–8 lbs total
Weeks 9–12
1.0mg
Meaningful suppression begins
8–14 lbs total
Weeks 13–16
1.7mg
Approaching full efficacy
14–22 lbs total
Week 17+
2.4mg
Maintenance — maximum efficacy
20–35+ lbs total
The most important thing to understand: 0.25mg is a tolerance-building dose, not a weight loss dose. Most patients feel minimal effects in the first 4 weeks. This is normal and expected — not a sign the medication isn't working. The results come at higher doses. Patients who quit in weeks 2–4 are stopping before the medication has had a real chance to work.
Compounded semaglutide doses vs brand-name
Compounded semaglutide through telehealth platforms follows the same dosing schedule as brand-name Ozempic/Wegovy because the active molecule is identical. Your telehealth provider will prescribe the appropriate starting dose and titration schedule based on your health intake. The concentrations in compounded vials vary by pharmacy — always follow your provider's specific instructions for how many units to draw, not just the mg dose.
When to slow titration
You don't have to increase on the 4-week schedule if you're experiencing significant side effects. Staying at a dose for an additional 4 weeks before increasing is a standard clinical approach that most telehealth providers support. Signs you should slow titration: nausea that doesn't improve after 2 weeks at a dose, vomiting more than 1–2 times per week, or significant fatigue that interferes with daily function.
When to consider staying at a lower maintenance dose
Not every patient needs or tolerates 2.4mg. Some patients achieve their weight loss goals at 1.0mg or 1.7mg and may choose to maintain there rather than push to the maximum. Discuss your goals and tolerance with your provider — the maintenance dose that works best for you individually may not be the clinical maximum.
What to do if you miss a dose
Missed dose, less than 5 days ago: take it as soon as you remember, then resume your regular weekly schedule
Missed dose, 5 or more days ago: skip it entirely and resume your next scheduled dose on the original day
Never double-dose to make up for a missed injection
If you miss multiple doses in a row, contact your provider — you may need to re-titrate from a lower dose
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What is the starting dose of semaglutide for weight loss?
The standard starting dose is 0.25mg weekly for the first 4 weeks. This is a tolerance-building dose — its purpose is to let your body adapt to the medication with minimal side effects. Most patients feel modest effects at this dose. The first meaningful therapeutic dose is 0.5mg, which begins at week 5.
What is the maximum dose of semaglutide?
The maximum approved dose for weight loss is 2.4mg weekly (brand-name Wegovy). Ozempic for diabetes is approved up to 2mg weekly. Compounded semaglutide can be prescribed at the same doses. Some providers prescribe higher doses off-label, but 2.4mg is the standard evidence-based maximum for weight management.
How long does it take to reach the full semaglutide dose?
Following the standard titration schedule, it takes approximately 16–20 weeks (4–5 months) to reach and stabilize at the 2.4mg maintenance dose. Some patients titrate faster if they tolerate each dose increase well; others take longer if they need more time at each level. There is no clinical advantage to rushing — slower titration produces equivalent long-term outcomes with better tolerability.
Can I stay at a lower dose if 2.4mg causes too many side effects?
Yes — discuss this with your provider. Many patients achieve meaningful weight loss at 1.0mg or 1.7mg and may choose a lower maintenance dose that they tolerate better. The clinical goal is the highest dose you tolerate well, not necessarily the maximum. Your provider can help you find the right balance for your situation.
The standard semaglutide titration schedule — complete table
Weeks
Dose (mg)
Units (1mg/mL vial)
Phase
Expected effect
1-4
0.25mg
25 units
Starting (tolerability)
Below therapeutic — mild side effect introduction. Minimal weight loss expected.
5-8
0.5mg
50 units
Early therapeutic
First noticeable appetite suppression. 1-3% weight loss for many patients.
9-12
1.0mg
100 units
Therapeutic
Significant appetite suppression. 3-6% cumulative weight loss typical.
13-16
1.7mg
170 units
High therapeutic
Strong appetite and portion control. 7-10% cumulative weight loss.
17+
2.4mg
240 units
Maintenance (max dose)
Full effect. STEP trials: 15% avg body weight loss at 68 weeks at this dose.
Important for vial users: This table assumes a standard 1mg/mL concentration. If your compounded semaglutide is a different concentration (2mg/mL or 5mg/mL — common with some compounders), your unit amounts will be different. Always calculate units based on the concentration written on your vial label: Units = (Dose in mg ÷ Concentration in mg/mL) × 100.
Mg to units conversion — quick reference
For compounded semaglutide users drawing from vials, you need to convert your prescribed dose in milligrams to units on the syringe. This table covers the two most common concentrations:
Dose (mg)
1mg/mL vial — units
2mg/mL vial — units
5mg/mL vial — units
0.25mg
25 units
12.5 units
5 units
0.5mg
50 units
25 units
10 units
1.0mg
100 units
50 units
20 units
1.7mg
170 units
85 units
34 units
2.4mg
240 units
120 units
48 units
When to slow titration — signs you need more time at your current dose
The standard 4-week titration steps are guidelines, not requirements. Your physician can and should slow titration if you experience:
Persistent nausea that doesn't improve after 2 weeks at the current dose
Vomiting more than twice per week at your current dose
Significant fatigue that impacts daily function
Severe constipation unresponsive to dietary changes
Heartburn or GERD symptoms that weren't present before
Slowing titration does not compromise your long-term results — it simply extends your adjustment period. Patients who slow titration due to side effects ultimately achieve comparable weight loss to those who titrate on the standard schedule, with better tolerability and lower dropout rates.
When it makes sense to stay at a lower maintenance dose
Not every patient needs to reach 2.4mg. The appropriate maintenance dose is the lowest dose that produces satisfactory weight loss with acceptable tolerability — not necessarily the maximum dose. Reasons to stay at a lower maintenance dose:
You're achieving your target rate of weight loss at 0.5mg or 1mg
Side effects at higher doses significantly affect quality of life
Cost considerations — lower doses often cost the same but using less medication
You're nearing your goal weight and want to maintain rather than continue losing
Semaglutide dosing for compounded vs brand — key differences
The titration schedule is the same for compounded semaglutide and brand Wegovy. What differs:
Delivery format: Wegovy uses a prefilled auto-injector pen with pre-set doses. Compounded semaglutide comes in a vial requiring a syringe — you draw your dose manually
Concentration variability: Wegovy has a standardized concentration. Compounded vials may come in 1mg/mL, 2mg/mL, or 5mg/mL — you must use the correct conversion for your specific vial
Sublingual option: Some compounders (including DirectMeds) offer sublingual drop formulations — dosing instructions for sublingual are different from injectable and are specified by your physician
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The standard starting dose for semaglutide for weight loss is 0.25mg per week for the first 4 weeks. This is below the therapeutic weight-loss dose — it's used purely to introduce the medication and assess tolerability before stepping up. At 0.25mg, most patients experience minimal weight loss. This is expected and by design.
What is the maximum dose of semaglutide for weight loss?
The maximum approved dose of semaglutide for weight loss is 2.4mg per week (Wegovy). This is also the primary maintenance dose in the STEP trials that demonstrated 15% average weight loss. Compounded semaglutide prescribed for weight loss typically follows the same 2.4mg maximum, though your physician may adjust based on your individual response and tolerability.
How do I convert semaglutide mg to units?
For a standard 1mg/mL concentration: multiply your dose in mg by 100. So 0.25mg = 25 units, 0.5mg = 50 units, 1mg = 100 units, 2.4mg = 240 units. If your vial is a different concentration (2mg/mL or 5mg/mL), the unit amounts differ significantly. Always check your vial label and confirm your dose in units with your physician or pharmacist before injecting.
How long does it take semaglutide to work?
Appetite suppression typically begins at 0.5mg (weeks 5-8), with the first noticeable weight changes. Significant weight loss acceleration usually occurs at 1mg and above (weeks 9+). The STEP-1 trial showed cumulative weight loss of approximately 5-7% at 12 weeks and 15% at 68 weeks. Individual results vary significantly. The medication works progressively — patience through the initial titration period is essential.
What is the semaglutide dosing schedule for compounded semaglutide?
Compounded semaglutide follows the same titration schedule as brand Wegovy: 0.25mg/week for weeks 1-4, 0.5mg for weeks 5-8, 1mg for weeks 9-12, 1.7mg for weeks 13-16, then 2.4mg maintenance from week 17. The key difference is delivery format — compounded semaglutide comes in a vial requiring dose calculation in units based on your specific vial concentration, rather than Wegovy's pre-set auto-injector.
What is the semaglutide dosage for weight loss per week?
Semaglutide is injected once per week. The therapeutic range for weight loss runs from 0.5mg/week (early maintenance) to 2.4mg/week (maximum dose). The standard titration moves through 0.25mg (weeks 1-4) → 0.5mg (weeks 5-8) → 1mg (weeks 9-12) → 1.7mg (weeks 13-16) → 2.4mg (week 17 onward). Your physician may adjust this schedule based on tolerability and response.
Semaglutide vs tirzepatide dosing — the comparison
If you're deciding between semaglutide and tirzepatide, the dosing protocols differ significantly and affect how you approach titration:
Semaglutide (Wegovy): Once-weekly injection, titrates from 0.25mg to 2.4mg over 16 weeks, max dose 2.4mg. Average 15% weight loss at max dose.
Tirzepatide (Zepbound): Once-weekly injection, titrates from 2.5mg to 15mg over 20 weeks, max dose 15mg. Average 22% weight loss at max dose.
Tirzepatide's dose numbers are larger but the comparison isn't direct — different molecules, different receptor mechanisms, different units. The titration period for tirzepatide is slightly longer (20 weeks vs 16 weeks) to account for its more potent dual-agonist mechanism and higher side effect potential at therapeutic doses.
For patients switching from semaglutide to tirzepatide, there is no established direct dose conversion. Your physician will typically restart the tirzepatide titration from 2.5mg regardless of your semaglutide dose history, to ensure tolerability at the new medication.
What to do if you miss a semaglutide dose
If you miss your weekly semaglutide dose:
If it's been 5 days or fewer since your missed dose: inject as soon as you remember, then resume your regular weekly schedule
If it's been more than 5 days: skip the missed dose entirely. Resume on your regular next scheduled day. Do not double-dose to make up for a missed injection.
Missing one dose occasionally does not affect your long-term results meaningfully. The 7-day half-life of semaglutide means blood levels decline gradually after a missed dose — you won't lose all effect from one skipped injection. If you're missing doses regularly, discuss with your physician whether a different injection day might work better with your schedule.