Semaglutide vs Tirzepatide: Compare GLP-1 Weight Loss
Clinician-guided care with clear pricing, no hidden fees, and treatment delivered if prescribed. Not sure which medication is right for you? Browse our GLP-1 FAQ or learn about Open Water Rx.
All treatments reviewed by independent licensed providers. Prescription required. Not all patients qualify.
Our Programs
Three Programs. One Platform.
Every program is reviewed by an independent licensed provider. Nothing is prescribed unless it's clinically appropriate for you.
GLP-1 Programs
Clinician-reviewed injectable GLP-1 programs for meaningful, structured weight loss. Tirzepatide $219/mo.
$169/mo
Semaglutide & tirzepatide · injectable options
NAD+ & Peptide Therapy
Clinician-reviewed NAD+ nasal spray and sermorelin programs for energy, recovery, and healthy aging.
$112
1–6 month NAD+ & sermorelin plans
Men's Performance
Discreet, clinician-reviewed options for men's sexual health. Multiple formulation options. Patients must be 21+.
$39
Quattro Sublingual · Sildenafil · Tadalafil
Licensed provider review
Every case, every time
Clear, upfront pricing
No surprises before you pay
No insurance required
Direct-pay, no prior auth
Discreet shipping
If prescribed, ships to your door
Transparent Pricing
See every cost before you commit. No surprises, ever.
Program pricing is shown clearly before checkout. Semaglutide $169/mo, tirzepatide $219/mo, oral semaglutide $259/mo — flat pricing with no membership or provider fees. Longevity and men's health programs have their own transparent pricing. No insurance required, no hidden fees.
Full cost disclosed before you begin
Every program displays its complete price upfront. Weight-loss programs: semaglutide $169/mo, tirzepatide $219/mo. No hidden fees, no surprise charges after checkout. What you see is what you pay.
No insurance required, and that's a feature
By not accepting insurance, we eliminate prior authorization delays, coverage disputes, and surprise out-of-network bills. One clear price covers your full care cycle. Because Open Water Rx does not bill insurance, your care is not submitted to an insurer by Open Water Rx.
All-inclusive, every month
Your program price covers provider review, prescription if clinically appropriate, pharmacy preparation, discreet shipping, and ongoing follow-up care. Optional add-on services are always clearly priced and never required.
Side by Side
Full Program Comparison
Both paths involve a licensed medical provider and a real prescription. The difference is convenience, cost, and time. See transparent pricing for each program or explore all clinician-guided programs. Available nationwide in all 50 states. Read common GLP-1 questions or learn about our mission.
| Feature | Weight Loss $169/mo | Energy & Longevity $112 | Men's Health $39 |
|---|---|---|---|
Program Goal | Meaningful weight loss | Energy, recovery, performance | Sexual performance + confidence |
Price | $169/mo | $112 | $39 |
Treatment Types | Semaglutide, Tirzepatide | NAD+ nasal spray, sermorelin injections & orals | Quattro Sublingual, sildenafil, tadalafil |
Provider Review | Yes – licensed providers | Yes – licensed providers | Yes – licensed providers |
Prescription Required | Yes, if appropriate | Yes, if appropriate | Yes, if appropriate |
Delivery | Shipped discreetly if prescribed | Shipped discreetly if prescribed | Shipped discreetly if prescribed |
Insurance | No insurance required | No insurance required | No insurance required |
Best For | Higher BMI / structured weight loss | Energy + longevity care | Discreet performance support |
| Get Started | Start Weight Loss | Explore Longevity | Start Consultation |
Weight Loss
$169/mo
Program Goal
Meaningful weight lossPrice
$169/moTreatment Types
Semaglutide, TirzepatideProvider Review
Yes – licensed providersPrescription Required
Yes, if appropriateDelivery
Shipped discreetly if prescribedInsurance
No insurance requiredBest For
Higher BMI / structured weight lossEnergy & Longevity
$112
Program Goal
Energy, recovery, performancePrice
$112Treatment Types
NAD+ nasal spray, sermorelin injections & oralsProvider Review
Yes – licensed providersPrescription Required
Yes, if appropriateDelivery
Shipped discreetly if prescribedInsurance
No insurance requiredBest For
Energy + longevity careMen's Health
$39
Program Goal
Sexual performance + confidencePrice
$39Treatment Types
Quattro Sublingual, sildenafil, tadalafilProvider Review
Yes – licensed providersPrescription Required
Yes, if appropriateDelivery
Shipped discreetly if prescribedInsurance
No insurance requiredBest For
Discreet performance supportAll treatments are prescribed only when clinically appropriate by independent licensed providers. Available nationwide in all 50 states.
The Open Water Rx Difference
Know the cost before you start.
We provide clear, upfront pricing across all programs so you can make informed decisions before beginning treatment. No hidden fees. No surprises.
Find My ProgramPricing
Know the cost before you start
We provide clear, upfront pricing across all programs so you can make informed decisions before beginning treatment.
Weight Loss
$169/mo
Semaglutide & tirzepatide · injectable options
- Provider review included
- Prescription if appropriate
- Shipping included if prescribed
- No insurance required
Energy & Longevity
$112
1–6 month NAD+ & sermorelin plans
- Provider review included
- Prescription if appropriate
- Shipping included if prescribed
- No insurance required
Men's Health
$39
Quattro Sublingual · Sildenafil · Tadalafil
- Provider review included
- Prescription if appropriate
- Shipping included if prescribed
- No insurance required
Pricing transparency is a core value. Everything is disclosed before you pay. No hidden fees, no surprise charges, no insurance battles. Pricing and availability are subject to clinical appropriateness.
Clinical Science
Semaglutide vs. Tirzepatide: Understanding the Clinical Evidence Behind GLP-1 Weight Loss Medications
When comparing GLP-1 weight loss medications, it is essential to understand the clinical trial evidence that underpins each option. Semaglutide and tirzepatide are two extensively studied pharmaceutical treatments for chronic weight management currently available through telehealth platforms like Open Water Rx. Both medications work by mimicking natural gut hormones that regulate appetite, slow gastric emptying, and signal satiety to the brain, but they differ in their mechanisms, efficacy profiles, and clinical trial outcomes.
Semaglutide is a GLP-1 receptor agonist that was originally developed for type 2 diabetes management under the brand name Ozempic and later approved for chronic weight management as Wegovy. Clinical trials with the FDA-approved semaglutide formulation demonstrated significant weight loss results. The STEP 4 trial demonstrated that continuing semaglutide maintained weight loss, while discontinuing led to gradual regain — highlighting the importance of ongoing treatment.
Tirzepatide represents the next generation of incretin-based therapy. Unlike semaglutide, which targets only the GLP-1 receptor, tirzepatide is a dual GIP (glucose-dependent insulinotropic polypeptide) and GLP-1 receptor agonist. Clinical trials with the FDA-approved tirzepatide formulation demonstrated significant weight loss. The SURMOUNT-3 trial, which included an intensive lifestyle intervention lead-in period, reported even greater results with tirzepatide following diet and exercise.
How to choose between them? Your independent licensed medical provider will make this recommendation based on your complete health profile, not on efficacy alone. Factors considered include your baseline weight, BMI, presence of type 2 diabetes or prediabetes, cardiovascular history, gastrointestinal tolerance, prior medication experience, personal preferences regarding injection frequency, and cost considerations. Tirzepatide's greater average weight loss in published trials comes with a higher price point. Some patients may start with semaglutide and transition to tirzepatide later if additional weight loss is needed. Others may begin with tirzepatide if their provider determines they are good candidates and the greater average weight loss in published trials justifies the higher cost. There is no universally "better" option — only the option that is clinically appropriate for you. See FAQ for more on choosing.
Comparing Mechanisms of Action
Semaglutide (GLP-1 only): Activates GLP-1 receptors in the pancreas, brain, and gastrointestinal tract. This stimulates insulin secretion in a glucose-dependent manner, suppresses glucagon release, delays gastric emptying, and acts on appetite centers in the hypothalamus to reduce hunger and increase satiety. The result is reduced caloric intake, improved glycemic control, and steady weight loss over time.
Tirzepatide (GIP + GLP-1 dual): Simultaneously activates both GIP and GLP-1 receptors. The GIP component enhances insulin secretion beyond what GLP-1 alone achieves and may have independent effects on metabolic processes and energy expenditure. The dual mechanism produces greater appetite suppression, more potent effects on post-meal blood sugar control, and superior weight loss outcomes compared to single-receptor agonists.
Side Effect Profiles and Tolerability
Both medications share a similar side effect profile because they both activate GLP-1 receptors. The most common side effects are gastrointestinal: nausea, vomiting, diarrhea, constipation, and abdominal discomfort. These effects are typically mild to moderate, dose-dependent, and transient — they usually diminish within the first 4 to 8 weeks as the body adapts to the medication.
Some patients find tirzepatide slightly more difficult to tolerate at higher doses due to its dual-mechanism potency, while others tolerate it as well as or better than semaglutide. Starting at lower doses and following a gradual titration schedule — which is standard practice in all Open Water Rx programs — significantly reduces side effect severity. Your provider will adjust your dosing protocol based on how you respond during the initial weeks of treatment.
Beyond Weight Loss: Cardiometabolic Benefits
Both semaglutide and tirzepatide offer benefits that extend far beyond weight reduction. The SELECT cardiovascular outcomes trial demonstrated that semaglutide 2.4 mg reduced the risk of major adverse cardiovascular events (MACE) by 20 percent in adults with overweight or obesity and established cardiovascular disease — a groundbreaking result that established semaglutide as the first weight loss medication proven to reduce heart attack and stroke risk in this population.
Tirzepatide has shown similarly impressive cardiometabolic improvements in the SURPASS and SURMOUNT trial programs, with significant reductions in HbA1c, LDL cholesterol, triglycerides, blood pressure, and inflammatory markers. The ongoing SURMOUNT-MMO trial is specifically evaluating tirzepatide's cardiovascular outcomes, with results expected in the coming years.
For patients with type 2 diabetes or prediabetes, both medications offer the dual benefit of weight loss and improved glycemic control, often reducing or eliminating the need for other diabetes medications. Your licensed provider will review your full metabolic profile and cardiovascular risk factors when recommending the most appropriate medication for your individual situation.
Decision Support
Which Option Should I Ask About?
Your independent licensed provider makes the final recommendation based on your full health profile. Here is what to consider when discussing options.
Ask about semaglutide if:
- You are new to GLP-1 therapy and want the most-studied single-pathway option
- You have type 2 diabetes or cardiovascular risk — semaglutide has a proven cardiovascular outcomes benefit (SELECT trial)
- You prefer the longer clinical track record with FDA-approved formulations
- You want the most cost-effective starting option at $169/mo
Ask about tirzepatide if:
- You have a higher starting BMI and your provider agrees a dual-pathway approach may be beneficial
- You are interested in the dual GIP/GLP-1 mechanism that produced greater average weight loss in SURMOUNT trials
- You have type 2 diabetes — tirzepatide has shown significant HbA1c improvements in SURPASS trials
- You are willing to invest in the newer dual-agonist option at $219/mo
These are general considerations, not medical advice. Your licensed provider will recommend the most appropriate option based on your complete health profile. Not all patients qualify. Check my eligibility or browse FAQ.
Decision Guide
Not sure which program is right for you?
Use this quick guide to find your starting point. Your licensed provider will make the final recommendation. Still unsure? Browse the FAQ or learn about our approach.
If you want…
Want meaningful weight loss
→ Start with a GLP-1 program
If you want…
Have questions about prescribed dosing
→ Prescribed dosing guide
If you want…
Want energy + longevity support
→ NAD+ or peptide therapy
If you want…
Want discreet performance support
→ Men's health program
Still not sure? Let a clinician guide you.
Complete a short intake and your licensed provider will recommend the right program based on your individual health profile.
Compare My OptionsChoose your program and get started today
Every program starts with a licensed provider review. Nothing is prescribed unless it's clinically appropriate for you. Want more detail? Read our FAQ or learn about Open Water Rx.
Find My ProgramTreatment determined by independent licensed providers. Not all patients qualify. Available nationwide in all 50 states.
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Important FDA Notice: Compounded medications discussed on this page are not FDA-approved finished drug products. All prescribing decisions are made by independent licensed medical providers. A valid patient-provider relationship (VPPPR) must be established before any prescription is issued. Open Water Rx does not manufacture, compound, or dispense medications. Individual results vary and are not guaranteed. Read full consent →