Wegovy Dosing Schedule: Step-by-Step Guide

Last reviewed: July 9, 2026

Last updated: July 9, 2026

Written by: Jay Hastings, CEO of PlexusDx

Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations. He has more than 20 years of experience across healthcare innovation, genomics, laboratory operations, healthcare investing, and strategic finance.

Medically reviewed by: Jayden Lee, PharmD, EMBA

Jayden Lee, PharmD, EMBA, is the PlexusDx Medical Science Liaison with a PharmD and MBA specializing in pharmacogenomics and clinical product development, with a proven ability to bridge the gap between genomic research and practical patient outcomes. Dr. Lee has more than 10 years of professional experience in clinical pharmacy, academia, and research.

This article is part of the PlexusDx Education Hub — science-backed guidance on GLP-1 medications, metabolic health, and precision weight management.

Semaglutide is a glucagon-like peptide-1 (GLP-1) receptor agonist that works by slowing stomach emptying and signaling fullness to your brain—but it must be introduced gradually. The standard titration protocol spans 16 weeks, with dose increases every 4 weeks, allowing your body to adapt and reducing nausea and other adjustment effects. PlexusDx delivers compounded semaglutide injections tailored to your phase of therapy, starting at $189 per month—and your dose may need to go up, but your price won't.

What Is the Standard Semaglutide Titration Schedule?

The semaglutide titration schedule is a 16-week program that moves your dose from 0.25 mg to a maintenance level of 1.0 mg or higher. During weeks 1–4, you inject 0.25 mg once weekly to allow your body to recognize and tolerate the medication. This introductory phase is critical: it lets your appetite-control pathways activate gently while your gastrointestinal system adjusts. Most patients report minimal side effects during this opening window.

Weeks 5–8 raise your dose to 0.5 mg weekly. This doubling of the initial amount intensifies the GLP-1 signal but remains below the therapeutic dose for weight loss. Weeks 9–12 bring you to 0.75 mg, further activating satiety mechanisms and beginning to show meaningful appetite suppression. Finally, weeks 13–16 establish the standard 1.0 mg maintenance dose, where most patients experience peak appetite reduction and metabolic benefits. Some individuals require or benefit from doses of 1.5 mg or 2.0 mg; your PlexusDx provider will adjust based on your response and genetic predisposition to GLP-1 receptor signaling.

How to Inject Semaglutide: Timing and Technique

Semaglutide is administered as a subcutaneous injection—a needle inserted just under the skin, not into muscle or vein. You choose the same day each week, such as Monday morning, to maintain consistent hormone levels and build a routine. Acceptable injection sites include the abdomen (avoid a 2-inch circle around your navel), upper arm, or thigh. Rotate sites weekly to prevent lipohypertrophy (thickened tissue) and ensure even absorption.

Before injecting, remove the pen or prefilled syringe from the refrigerator and let it sit at room temperature for 15–30 minutes; cold medication can cause injection-site discomfort. Pinch the skin at your chosen site, insert the needle at a 90-degree angle, and inject slowly over 3–5 seconds. After injection, hold the needle in place for 6 seconds, then withdraw and apply light pressure with a clean gauze pad. Do not rub the injection site. Store unused semaglutide at 2–8°C (35–46°F); once opened, most pens remain stable for 28 days at room temperature or refrigerated.

Managing Side Effects During Dose Escalation

Nausea is the most common side effect during the first two weeks of each dose increase, affecting 30–50% of patients in clinical trials. This occurs because GLP-1 receptors in your brain's chemoreceptor trigger zone signal fullness and mild queasiness as your body adapts. Nausea typically peaks 24–48 hours after injection and resolves within 3–7 days. Eating small, low-fat meals; staying hydrated; and taking anti-nausea medication (such as ginger supplements or over-the-counter remedies) can reduce discomfort without interfering with semaglutide's effectiveness.

Constipation and diarrhea may alternate during titration because semaglutide slows gastric emptying, changing how your digestive tract processes food and water. Increase soluble fiber intake gradually—oats, beans, and psyllium—and drink at least 2–3 liters of water daily. If vomiting, severe abdominal pain, or persistent side effects occur, contact your healthcare provider immediately; these may signal pancreatitis or gastroparesis, though both are rare. PlexusDx patients receive ongoing monitoring and can adjust their schedule based on tolerability.

Maintenance Dosing and Long-Term Semaglutide Therapy

Once you reach your target maintenance dose—typically 1.0 mg weekly, though some patients benefit from 1.5 mg or 2.0 mg—you continue that same dose indefinitely as long as you remain on therapy. Unlike the titration phase, maintenance dosing is stable: your injection amount, day of the week, and injection sites all remain consistent. Your price also remains stable at $149 per month (or your selected tier rate) regardless of whether you stay at 1.0 mg or eventually increase to a higher dose.

The PlexusDx Precision Peptide Genetic Test ($99 add-on after your first month) analyzes GLP1R (rs6923761), and FTO (rs9939609) — variants that relate to GLP-1 and related signaling pathways. It does not predict your response to tirzepatide or determine your dose; it offers pathway-level context for a conversation with your provider. Genetics is a guide, not a guarantee.

How Your Genetics Relate to GLP-1 Pathways

Not everyone responds to GLP-1 medications the same way. Genetic variants — including GIPR rs1800437, GLP1R rs6923761, FTO rs9939609, and MC4R rs17782313 — relate to the biological pathways these medications act on. These are pathway-level associations only and do not predict how much weight you will lose or how you will respond to any specific medication. PlexusDx maps 14 pathways, 49 peptides, and 150+ genetic insights so you and your provider can see how your genes relate to these pathways. It does not recommend, prescribe, or determine which medication, dose, or peptide is right for you. The PlexusDx Precision Peptide Genetic Test ($99 add-on after your first month of treatment) gives you and your provider pathway-level genetic context to support a more personalized conversation. Genetics is a guide, not a guarantee.

Access Personalized GLP-1 Care Through PlexusDx

PlexusDx offers six prescription GLP-1 protocols to all 50 states — no membership, no insurance required, async intake or live consult. The Semaglutide Injection starts at $189/mo. Medications are dispensed from licensed 503A compounding pharmacies following strict quality and safety standards. Add a Precision Peptide Genetic Test for $99 to personalize your protocol from day one.

Frequently Asked Questions

What happens if I miss a weekly semaglutide injection?

If you miss your injection by 1–2 days, inject as soon as you remember and resume your regular schedule the following week. If you miss by more than 2 days, skip that dose and inject on your scheduled day. Missing a single dose will not reverse weight loss or cause significant metabolic rebound, but consistency maximizes results. PlexusDx reminder apps and patient support can help you stay on schedule.

Can I skip steps or accelerate the titration schedule?

Accelerating the standard 16-week titration increases nausea, vomiting, and gastrointestinal side effects without improving weight-loss outcomes. Clinical trials demonstrate that gradual titration leads to better tolerability, higher completion rates, and sustained weight loss compared to rapid escalation. Your PlexusDx provider may slow the schedule if you experience intolerable side effects, allowing your body to adapt at its own pace.

How much does semaglutide cost at PlexusDx compared to brand-name Wegovy?

PlexusDx compounded semaglutide injections start at $189/mo (or $149/mo on the 6-month plan)—significantly less than brand-name Wegovy, which typically costs $900–$1,300 monthly without insurance. PlexusDx medications are made by licensed 503A compounding pharmacies, are HSA/FSA eligible, and serve all 50 states without membership fees or insurance requirements. Your dose may increase, but your price remains locked at your chosen tier.

What are the serious side effects I should watch for?

Acute pancreatitis (severe upper-abdominal pain with vomiting), severe hypoglycemia (only if you also take insulin or sulfonylureas), and acute kidney injury (rare, mainly in dehydrated or elderly patients) are serious but uncommon. If you experience sudden, severe abdominal pain, persistent vomiting, or signs of dehydration, seek immediate medical attention. PlexusDx provides 24/7 support and screens for contraindications before starting therapy.

How does the Precision Peptide Genetic Test help optimize my semaglutide dose?

No — the Precision Peptide Genetic Test does not predict your response to semaglutide or any specific medication. It analyzes pathway-level variants (GLP1R (rs6923761)) that relate to the biology involved, offering context for a conversation with your provider rather than a prediction.

Related Reading

• Tirzepatide Dosing Schedule Plexusdx
• Ro Wegovy
• Mochi Wegovy
• Noom Wegovy

Pricing and availability current as of July 2026. Compounded GLP-1 medications are not FDA-approved drug products; they are prepared by licensed compounding pharmacies under federal compounding regulations. Compounded semaglutide and tirzepatide are not the same as Wegovy, Ozempic, Zepbound, or Mounjaro. This article is for informational purposes only and does not constitute medical advice. Consult a licensed healthcare provider before starting, stopping, or changing any medication.

Return to the PlexusDx Education Hub for more evidence-based resources on GLP-1 therapy, metabolic health, and personalized weight management.

Medical and Editorial Standards

Medical review process: This article was reviewed for medical accuracy, scientific clarity, evidence alignment, and appropriate discussion of genetics, medications, supplements, biomarkers, and health-related claims.

Sources and evidence: PlexusDx educational content is developed using peer-reviewed research, clinical literature, reputable medical references, and, where applicable, public health or regulatory guidance.

Commercial transparency: PlexusDx offers genetic testing, blood biomarker testing, personalized supplement recommendations, and related precision wellness services. Product mentions are intended to help readers understand available options and should not be interpreted as medical advice.

Important disclaimer: PlexusDx educational content is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about medications, supplements, genetic testing, lab testing, or health-related care.