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Best GLP-1 for Weight Loss

GLP-1 receptor agonists have revolutionized weight loss treatment. But which one delivers the best results? This comprehensive guide compares tirzepatide, semaglutide, and liraglutide based on clinical effectiveness, side effects, cost, and real-world outcomes to help you make an informed decision.

Comparing GLP-1 weight loss medications

The Quick Answer: Tirzepatide is currently the most effective GLP-1 for weight loss, with clinical trials showing 20-25% average body weight reduction— significantly more than semaglutide (10-15%) or liraglutide (5-10%). Access tirzepatide through CoreAge Rx, our #1 rated provider. Read on for detailed comparisons of all GLP-1 options.

GLP-1 Medication Comparison

Side-by-side comparison of the leading GLP-1 medications for weight loss

#1 MOST EFFECTIVE GLP-1 FOR WEIGHT LOSS
#1
Tirzepatide
Mounjaro, Zepbound
9.8/10
Average Weight Loss
20-25%
Mechanism
Dual GLP-1/GIP
  • Dual receptor activation (GLP-1 + GIP)
  • Superior weight loss vs. semaglutide
  • FDA-approved for weight management
  • Weekly injection

Get Tirzepatide through CoreAge Rx: Start your journey →

#2
Semaglutide
Ozempic, Wegovy
9.3/10
Average Weight Loss
10-15%
Mechanism
GLP-1 Agonist
  • Extensive clinical research
  • FDA-approved since 2021
  • Proven cardiovascular benefits
  • Weekly injection
#3
Liraglutide
Saxenda
8.5/10
Average Weight Loss
5-10%
Mechanism
GLP-1 Agonist
  • First GLP-1 for weight loss
  • Lower cost option
  • Well-established safety profile
  • Daily injection required

Get the Best GLP-1 with CoreAge Rx

Access tirzepatide, the most effective GLP-1, through our #1 rated provider

Why Choose CoreAge Rx for Tirzepatide

CoreAge Rx specializes in delivering the most advanced GLP-1 treatment available. Their tirzepatide program combines cutting-edge medication with personalized medical oversight to help you achieve maximum weight loss results safely and effectively.

  • Maximum Effectiveness: Tirzepatide's dual GLP-1/GIP mechanism delivers up to 25% body weight reduction
  • Medical Excellence: Board-certified physicians specializing in metabolic health guide your treatment
  • Complete Care Package: FDA-approved medication, supplies, shipping, and unlimited support—all included
Get the #1 GLP-1 With
CoreAge Rx
9.9/10 Rating

20-25% Average Weight Loss

Join thousands achieving record weight loss

Tirzepatide vs. Semaglutide: The Weight Loss Showdown

While both medications are GLP-1 receptor agonists, tirzepatide has a critical advantage: it's a dual agonist that also activates GIP (glucose-dependent insulinotropic polypeptide) receptors. This dual mechanism translates to significantly better weight loss outcomes.

Head-to-Head Clinical Results:

Tirzepatide (15mg)
22.5%
average weight loss at 72 weeks
Semaglutide (2.4mg)
14.9%
average weight loss at 68 weeks

The SURMOUNT-1 trial demonstrated tirzepatide's superiority: at the highest dose, participants lost an average of 22.5% body weight compared to 14.9% with semaglutide in comparable studies. That's 50% more weight loss—a game-changing difference.

Better appetite control: Tirzepatide's dual action provides more powerful appetite suppression
Improved metabolic markers: Greater improvements in blood sugar, insulin sensitivity, and lipid profiles
Similar side effect profile: Comparable tolerability with mainly GI-related side effects that typically improve over time

Our Verdict: For maximum weight loss, tirzepatide is the clear winner. Access it through CoreAge Rx, which offers both brand-name and affordable compounded tirzepatide options with comprehensive medical support.

GLP-1 Side Effects: What to Expect

All GLP-1 medications share similar side effect profiles since they work through related mechanisms. Understanding what to expect helps you prepare and manage any symptoms effectively.

Most Common (20-40% of patients):

  • • Nausea (usually temporary, peaks in first 4-8 weeks)
  • • Diarrhea or constipation
  • • Decreased appetite (this is therapeutic, not a side effect)
  • • Abdominal discomfort or bloating

Less Common (5-15% of patients):

  • • Headache or fatigue
  • • Dizziness
  • • Acid reflux or heartburn
  • • Injection site reactions

Rare but Serious (<2% of patients):

  • • Pancreatitis (severe abdominal pain)
  • • Gallbladder problems
  • • Severe allergic reactions
  • • Kidney problems (in patients with pre-existing conditions)

Managing Side Effects:

  • Start with lower doses and titrate gradually—this significantly reduces nausea
  • Eat smaller, more frequent meals instead of large portions
  • Avoid high-fat, greasy, or spicy foods that worsen GI symptoms
  • Stay well-hydrated, especially if experiencing diarrhea
  • Work with your physician on dose timing and adjustments

Providers like CoreAge Rx offer comprehensive side effect management support, helping you navigate any challenges and adjust your treatment plan as needed for optimal results.

GLP-1 Cost Comparison: Finding Affordable Options

Cost is a major factor when choosing a GLP-1 medication. Here's what you can expect to pay for each option, along with strategies to reduce costs.

Tirzepatide
Most Effective
Brand (Mounjaro/Zepbound):$900-1,300/month
Compounded:$199-400/month
Semaglutide
Very Effective
Brand (Ozempic/Wegovy):$900-1,500/month
Compounded:$99-350/month
Liraglutide
Moderate Effect
Brand (Saxenda):$1,200-1,500/month
Compounded:Rarely available

Cost-Saving Strategies:

  • Choose compounded versions: Save 60-80% while getting the same active ingredient
  • Check insurance coverage: Some plans cover brand-name GLP-1s for weight loss or diabetes
  • Use telehealth providers: Lower consultation fees and competitive medication pricing
  • Consider manufacturer coupons: Brand-name medications sometimes offer savings cards (eligibility restrictions apply)

CoreAge Rx offers competitive pricing on compounded tirzepatide with transparent costs and no hidden fees—giving you access to the most effective GLP-1 at an affordable price point.

Which GLP-1 is Right for You?

The best GLP-1 depends on your specific goals, medical history, and circumstances. Here's our recommendation framework:

Choose Tirzepatide If:

  • • You want maximum weight loss results (20-25% potential)
  • • You're comfortable with weekly injections
  • • Cost is manageable through compounded options
  • • You have significant weight to lose (BMI ≥30 or ≥27 with conditions)
  • • You want the newest, most advanced option
Best Provider: CoreAge Rx — Premium tirzepatide program with expert support

Choose Semaglutide If:

  • • You want proven, well-studied results (10-15% weight loss)
  • • Your insurance covers Ozempic or Wegovy
  • • You prefer more extensive long-term safety data
  • • You have cardiovascular risk factors (proven CV benefits)
  • • Tirzepatide isn't available or suitable for you
Best Provider: CoreAge Rx also offers semaglutide as an alternative

Choose Liraglutide If:

  • • You have a lower weight loss goal (5-10%)
  • • Insurance fully covers Saxenda
  • • You prefer the oldest, most established GLP-1
  • • Other GLP-1s aren't suitable due to medical reasons
  • • You're okay with daily (vs weekly) injections
Note: Given better options, liraglutide is rarely the first choice anymore

Our Overall Recommendation: For the vast majority of patients seeking significant weight loss, tirzepatide through CoreAge Rx offers the best combination of effectiveness, safety, and value. Their board-certified physicians can help you determine if tirzepatide or semaglutide is the right fit for your specific situation.

Medical Disclaimer: This information is for educational purposes only and is not intended as medical advice. GLP-1 medications are prescription drugs that require physician oversight. Always consult with a qualified healthcare provider before starting any weight loss treatment. Individual results vary, and not everyone is a suitable candidate for GLP-1 therapy.