Semaglutide (Ozempic/Wegovy)
GLP-1 agonist
Also known as Semaglutide
Typical dose
0.25–2.4 mg weekly
once weekly · SubQ · titrate over ~16 wks
Half-life
~7 days
What is Semaglutide (Ozempic/Wegovy)?
GLP-1 receptor agonist. Reduces appetite and slows gastric emptying. FDA-approved for diabetes and obesity.
How Semaglutide (Ozempic/Wegovy) works
Binds GLP-1 receptors in the hypothalamus, pancreas, and gut to suppress appetite, slow gastric emptying, enhance insulin secretion, and reduce glucagon — producing sustained caloric deficit.
Benefits & uses
- Weight loss
- Blood sugar control
- Cardiovascular protection
- Appetite suppression
- Significant weight loss (~15% in trials)
- Strong blood-sugar control
- Appetite reduction
- Cardiovascular benefit (established)
Common uses: Weight loss, appetite control, blood glucose, cardiovascular risk reduction.
Semaglutide (Ozempic/Wegovy) dosage
- Typical dose
- Typical: start 0.25 mg/week SubQ × 4 weeks, then 0.5 → 1.0 → 1.7 → 2.4 mg/week. Once weekly.
- Protocol notes
- Start 0.25mg/week, titrate up over 16-20 weeks to 1-2.4mg/week. Titrate slowly to minimize GI side effects.
Semaglutide (Ozempic/Wegovy) half-life
~7 days (once-weekly dosing)
Semaglutide (Ozempic/Wegovy) side effects
Nausea, diarrhea, vomiting, constipation. Pancreatitis risk. Thyroid cancer concern (animal data).
- Nausea (very common initially)
- Diarrhea and vomiting
- Constipation
- Pancreatitis (rare but serious — stop if severe abdominal pain)
- Thyroid C-cell tumor risk (animal data, avoid with personal/family MTC history)
- Gallbladder disease with rapid weight loss
- Injection site reactions
- Nausea (~44%)
- Vomiting (~25%)
- Diarrhea
- Fatigue
- Injection-site reactions
Warnings & monitoring
- Prescription only
- GI side effects common — nausea, vomiting, diarrhea
- Black box warning: thyroid C-cell tumors in rodents
- Contraindicated in personal/family history of MTC
- Pancreatitis risk
- Muscle loss risk — ensure adequate protein + resistance training
- Titrate slowly — GI effects mostly first ~20 weeks, cause ~4% to discontinue
- Class risks: pancreatitis, gallbladder disease, gastroparesis
- Boxed warning: medullary thyroid carcinoma / MEN2 — contraindicated with that history
- Not for pregnancy
Preparation & storage
- Preparation
- Mix a 5 mg vial with 2 mL bac water → 2,500 mcg/mL. A 0.25 mg dose = 0.1 mL = 10 units. Start 0.25 mg/week, titrate slowly.
- Reconstitution
- Reconstitute a 5 mg vial with 2 mL BAC water → 2.5 mg/mL. A 0.25 mg dose = 0.1 mL = 10 units on a U-100 syringe.
- Storage
- Refrigerate (2–8 °C). Once in use: up to 28 days at room temperature (below 30 °C). Protect from light and heat.
Semaglutide (Ozempic/Wegovy) interactions
with Retatrutide
Avoid · severeBoth are GLP-1 receptor agonists; combining them dramatically increases nausea, vomiting, and gastrointestinal distress with no meaningful additive benefit.
Timing: Do not use concurrently under any circumstances
with Tirzepatide
Avoid · severeBoth are GLP-1 receptor agonists; concurrent use compounds GI toxicity and pancreatic stress with no additive efficacy.
Timing: Never combine
with Tirzepatide
Avoid · severeThese are both GLP-1 agonists from the same drug class; combining them offers no additional efficacy but substantially increases the risk of pancreatitis and GI complications.
Timing: Do not use concurrently; choose one agent
with AOD-9604
Caution · moderateAOD-9604 is a GH fragment claimed to stimulate lipolysis; semaglutide reduces caloric intake via GLP-1 agonism. Stacking multiple fat-loss mechanisms may cause excessive caloric deficit and muscle loss.
Timing: Avoid combining multiple fat-loss agents without medical supervision
with AOD-9604
Caution · mildBoth compounds promote fat loss via different mechanisms (lipolysis vs appetite suppression) — additive effect can cause excessive caloric restriction and muscle catabolism.
Timing: Start semaglutide dose at the lowest level when combining; monitor appetite closely
with Berberine
Caution · mildBoth have hypoglycemic and GI effects; combined dosing amplifies nausea and risk of low glucose in lean users.
Timing: Lower berberine to 500mg/day when on GLP-1
with HGH Frag 176-191
Caution · mildBoth promote fat loss — HGH Frag via lipolysis inhibition, semaglutide via appetite suppression. Additive fat-loss effect is useful for cutting but risks excessive caloric restriction and lean mass loss.
Timing: Monitor appetite and caloric intake closely; start HGH Frag at lowest dose
with Insulin
Caution · severeBoth semaglutide and insulin lower blood glucose. Combining them without precise medical dosing guidance carries serious hypoglycemia risk. This combination requires a treating endocrinologist — not for unsupervised use.
Timing: Never combine without continuous glucose monitoring and medical supervision
with Peptide YY
Caution · moderateBoth compounds suppress appetite through different mechanisms. Combining them may cause excessive caloric restriction, nutritional deficiencies, and muscle wasting.
Timing: Avoid stacking without medical guidance — additive appetite suppression
with Tesofensine
Caution · moderateTesofensine raises BP/HR via NE/DA reuptake inhibition; combined with GLP-1 anorexia, can drive excessive lean mass loss and cardiovascular strain.
Timing: Do not initiate simultaneously; separate by 4+ weeks if cycling
with 5-Amino-1MQ
Compatible5-Amino-1MQ activates AMPK and shifts NAD+ flux toward lipolysis — complementary to GLP-1 driven appetite suppression.
Timing: Stack daily during fat-loss phase
with BPC-157
CompatibleBPC-157 helps with the gastric emptying delay and gut irritation common during semaglutide dose escalation.
Timing: BPC-157 250-500mcg daily during GLP-1 protocol
with Testosterone
Compatible · lowSemaglutide used for weight management alongside TRT. Testosterone helps preserve muscle mass during weight loss induced by semaglutide-driven caloric restriction.
Timing: GLP-1 agonist weekly; testosterone per TRT protocol
Commonly stacked with
More GLP-1 Agonist
- CagrilintideLong-acting amylin analog used for appetite/weight management, often combined…
- CagriSema (Cagrilintide + Semaglutide)Fixed blend of cagrilintide (amylin) and semaglutide (GLP-1).
- GLP-1 (Native)Native glucagon-like peptide-1 — the body's own incretin hormone that the…
- LiraglutideOlder daily GLP-1 agonist (shorter half-life than weekly agents).
- MazdutideGLP-1/glucagon dual agonist; emerging weight-loss and metabolic peptide.
- Reta+Cagri BlendFixed blend of retatrutide and cagrilintide.
