Semaglutide is the compound that went mainstream. Sold as Ozempic (for type 2 diabetes), Wegovy (for obesity), and Rybelsus (oral tablet). Compounded semaglutide is the same molecule sourced from compounding pharmacies, typically as a lyophilized powder you reconstitute with bacteriostatic water. It mimics GLP-1, a gut hormone that tells your brain you're full and slows your stomach down. The result is dramatically reduced appetite without the white-knuckle willpower of traditional dieting. People describe it as food noise just stopping. The trade-off is real GI side effects, especially when you increase the dose too fast. Slow and steady wins here. Rushing the titration is the number one mistake people make.
Semaglutide Protocol
Dose: 0.25mg-2.4mg per week (titrated up) | Frequency: Once weekly | Cycle: Ongoing (not cycled) | Route: SubQ
Start at 0.25mg for 4 weeks, then 0.5mg for 4 weeks, and keep titrating up. Do not rush this. Your GI system needs time to adjust. Same day each week, any time of day.
Semaglutide Effects
Appetite suppression (89%). Profound reduction in food noise. Most users describe it as suddenly not thinking about food.
Weight loss (85%). Average 15% body weight loss at maintenance dose over 68 weeks in clinical trials
Improved blood sugar (70%). Significant A1C reduction even in non-diabetics, which is why it was approved for diabetes first
Reduced alcohol cravings (30%). Unexpected but widely reported. Many users lose interest in alcohol.
Semaglutide Side Effects
Nausea (44%). The main one. Worst when you bump the dose up. Your body adjusts. It gets better after a couple weeks at each level.
Diarrhea (30%). Some people get diarrhea instead of constipation. Bodies are unpredictable. More common at higher doses.
Constipation (24%). Your stomach is literally moving slower now. Fiber and water become non-negotiable. Stock up.
Vomiting (24%). Usually because you ate too much or too fast. Your stomach is smaller now. Respect the portion size.
Fatigue (11%). You're eating less, so you have less energy at first. Stabilizes after a few weeks once your body adjusts.
Semaglutide Dosing by Use Case
Condition
Dose
Duration
Notes
Weight loss (primary indication)
0.25mg to 2.4mg weekly, titrated
Ongoing, minimum 16 weeks for meaningful results
Start at 0.25mg. Hold 4 weeks. Increase to 0.5mg, hold 4 weeks. Continue: 1mg, 1.7mg, 2.4mg. Most people find their effective dose between 1-1.7mg. The 2.4mg dose showed 15% average weight loss in STEP trials. Don't skip the low doses even if you feel nothing. Your gut needs the ramp.
Type 2 diabetes management
0.25mg to 1mg weekly (Ozempic dosing)
Ongoing
FDA-approved as Ozempic for this indication. A1C reductions of 1.5-1.8% in SUSTAIN trials. If you're on insulin or sulfonylureas, your prescriber needs to adjust those down. Low blood sugar risk is real when combining diabetes meds.
Cardiovascular risk reduction
2.4mg weekly
Ongoing
The SELECT trial (2023) showed a 20% reduction in major cardiovascular events in obese non-diabetics. This is the first GLP-1 with proven heart benefit independent of diabetes. The cardiovascular data is what moved semaglutide from a weight loss drug to a metabolic medicine.
Metabolic syndrome and insulin resistance
0.5mg to 1mg weekly
Ongoing
Lower doses work for metabolic improvement without aggressive weight loss. Fasting glucose, triglycerides, blood pressure all improve. Some people stay at 0.5-1mg long-term for metabolic benefits without needing the higher obesity doses.
Semaglutide Results Timeline
Week 1-4, 0.25mg adjustment: You might not feel much at this dose. That's normal. It's a calibration phase. Some mild nausea. Appetite may or may not shift. Don't increase early. Your GLP-1 receptors are waking up.
Week 4-8, 0.5mg, appetite shifts: This is where most people notice it. Food noise quiets. Portions shrink naturally. You forget about snacks. GI side effects peak for a few days after each dose increase, then settle. 1-3% body weight loss is typical by week 8.
Week 8-16, 1-1.7mg, peak weight loss rate: Fastest rate of weight loss. 1-2% body weight per month. Clothes fit differently. Energy improves as metabolic load decreases. Watch protein intake aggressively. Your body will pull from muscle if you don't eat 0.7-1g protein per pound of lean mass.
Week 16+, 1.7-2.4mg, maintenance: Weight loss slows as you approach a new set point. The STEP 1 extension showed weight regain after stopping. Most protocols are indefinite. Some people taper to a lower maintenance dose (0.5-1mg) after reaching their target. The honest reality: this is likely a long-term commitment.
Frequently Asked Questions About Semaglutide
What is compounded semaglutide?
Compounded semaglutide is the same active molecule as Ozempic and Wegovy, prepared by compounding pharmacies instead of Novo Nordisk. It typically comes as a lyophilized powder (you reconstitute with bacteriostatic water) or a pre-mixed liquid vial. The molecular structure is identical. The difference is manufacturing oversight: branded versions are FDA-inspected, compounded versions are regulated by state pharmacy boards. Compounded semaglutide became widely available during the FDA-declared shortage of Ozempic/Wegovy and is significantly cheaper.
What is the semaglutide dosage schedule?
Start at 0.25mg once weekly for 4 weeks. Increase to 0.5mg for 4 weeks. Then 1mg for 4 weeks. Then 1.7mg for 4 weeks. Maximum maintenance dose is 2.4mg weekly. This is the Wegovy titration schedule. The entire ramp takes 16-20 weeks. For compounded semaglutide from a vial, you need to convert mg to syringe units based on your vial concentration. A 5mg vial reconstituted with 2mL gives 2.5mg/mL. For a 0.25mg dose, draw 10 units on a U-100 insulin syringe.
What are the side effects of semaglutide?
Nausea (44%), diarrhea (30%), constipation (24%), vomiting (24%), and fatigue (11%). GI side effects are worst during dose increases and usually settle within 1-2 weeks at each level. Smaller, slower meals help. Serious but rare risks include pancreatitis, gallbladder disease, and a boxed warning for a rare thyroid cancer (showed up in rats, hasn't been confirmed in humans, but it's serious enough to earn a boxed warning). The compounded-specific risk is dosing error. Pen users have fixed doses. Vial users calculate their own. Getting the unit conversion wrong is the most common compounded-specific issue.
How does semaglutide work?
Semaglutide mimics GLP-1, a hormone your gut releases after eating. GLP-1 tells your brain you're full, slows down how fast your stomach empties (food sits in there longer, so you feel full longer), and increases insulin secretion. The synthetic version has a much longer half-life (about 7 days vs minutes for natural GLP-1), which is why you only inject once a week. The appetite suppression is the primary driver of weight loss. You eat less because your brain genuinely isn't hungry, not because you're white-knuckling it.
How do you reconstitute compounded semaglutide?
For a 5mg lyophilized vial: add 2mL of bacteriostatic water. That gives you 2.5mg per mL. For a 0.25mg dose, draw 10 units on a U-100 insulin syringe. For 0.5mg, draw 20 units. For 1mg, draw 40 units. Aim the water at the glass wall, not directly onto the powder. Swirl gently. Never shake. If your compounded semaglutide comes pre-mixed, check the concentration on the label and use our calculator to determine the correct units.
How much weight can you lose on semaglutide?
In the STEP 1 trial, participants lost an average of 14.9% of body weight at the 2.4mg dose over 68 weeks. That's roughly 33 pounds for someone starting at 220 lbs. About a third of participants lost 20% or more. Real-world results vary with diet, exercise, starting weight, and dose reached. Weight regain after stopping is common. The STEP 1 extension showed participants regained about two-thirds of their lost weight within a year of stopping.
What's the difference between Ozempic, Wegovy, and Rybelsus?
Same molecule, three products. Ozempic is semaglutide injection approved for type 2 diabetes (max 2mg/week). Wegovy is semaglutide injection approved for obesity (max 2.4mg/week). Rybelsus is oral semaglutide for diabetes (daily pill, 14mg max). Ozempic is widely prescribed off-label for weight loss. Compounded semaglutide is the same molecule from a compounding pharmacy, usually at a fraction of the branded price.
Is semaglutide safe long-term?
The longest published trial data is 2 years (STEP 5). The SELECT cardiovascular trial ran 3+ years. No new safety signals emerged with longer use. The cardiovascular data is actually positive. 20% reduction in major cardiac events in obese non-diabetics. The main long-term concerns are muscle loss (eat enough protein), gallbladder issues (risk increases with rapid weight loss), and the theoretical thyroid risk from the rodent data. For compounded versions, the molecular safety is the same. The variable is manufacturing quality. Verify your compounding pharmacy is accredited.
Strong evidence. The most studied weight-loss compound on the planet. Multiple Phase 3 trials, FDA-approved as both Ozempic (diabetes) and Wegovy (obesity). Average weight loss of ~15% body weight in the STEP trials. The SELECT trial showed cardiovascular benefit in non-diabetics. The science is settled. This works.
Approval status: FDA-approved (branded)
References
Marso SP, Bain SC, Consoli A, et al. Semaglutide and Cardiovascular Outcomes in Patients with Type 2 Diabetes. N Engl J Med, 2016. PMID 27633186
Wilding JPH, Batterham RL, Calanna S, et al. Once-Weekly Semaglutide in Adults with Overweight or Obesity. N Engl J Med, 2021. PMID 33567185
Wadden TA, Bailey TS, Billings LK, et al. Effect of Subcutaneous Semaglutide vs Placebo as an Adjunct to Intensive Behavioral Therapy on Body Weight (STEP 3). JAMA, 2021. PMID 33625476
Garvey WT, Batterham RL, Bhatt DL, et al. Two-year effects of semaglutide in adults with overweight or obesity: the STEP 5 trial. Nat Med, 2022. PMID 36216945
Wilding JPH, Batterham RL, Davies M, et al. Weight regain and cardiometabolic effects after withdrawal of semaglutide: The STEP 1 trial extension. Diabetes Obes Metab, 2022. PMID 35441470
Lincoff AM, Brown-Frandsen K, Colhoun HM, et al. Semaglutide and Cardiovascular Outcomes in Obesity without Diabetes. N Engl J Med, 2023. PMID 37952131
Rubino DM, Greenway FL, Khalid U, et al. Effect of Weekly Subcutaneous Semaglutide vs Daily Liraglutide on Body Weight in Adults With Overweight or Obesity (STEP 8). JAMA, 2022. PMID 35015037
Storage
Lyophilized: Refrigerate at 2-8C. Compounded lyophilized vials are stable for 6+ months sealed.
Reconstituted: Refrigerate immediately. Use within 28 days. Never freeze.
Water: Bacteriostatic water, 2mL per 5mg vial for compounded versions.
Needle: 30-31 gauge, 0.5 inch for subcutaneous injection
These statements have not been evaluated by the FDA. This content is for educational purposes only. Consult a healthcare professional before starting any protocol. vialprep sells injection supplies, not compounds.
