✓Accessible & Affordable
✓Personalized Treatment Plans
✓Certified Medical Professionals
✓Safe & Effective Medications
✓100k+ Happy Customers
✓Accessible & Affordable
✓Personalized Treatment Plans
✓Certified Medical Professionals
✓Safe & Effective Medications
✓100k+ Happy Customers
★★★★★ (4.8) Excellent! Over 100,000+ happy customers

Lose 2–3 kg per week!

The proven way to lose 25% of your body weight fast!

Starting at 155€ – Retatrutide is simply the most potent way to lose weight fast.

100% online medical visit. Injections and oral options available.
Prescription & telemed visits included. No insurance required.
Same price, every dose. No hidden fees.
Free shipping. Arrives in 1–2 days.
Get started See pricing
No Hidden Fees No Monthly Membership Cancel Anytime
Mono Peptides

WE'VE BEEN FEATURED ALL OVER

OK! magazine
The Balancing Act
Woman's World
LA WEEKLY
Lifetime
HealthUncensored
BEFORE AFTER Before After

Monika, 44 yrs

How much weight can you shed by next spring?

Your current weight:

70 kg
You could easily lose: 18 kg
with Retatrutide protocol
US-Certified Pharmacy
Personalized Treatments
Trusted by 100k+ Americans
1:1 Medical Support
Get started See pricing
No Hidden Fees No Monthly Membership Cancel Anytime
Trustpilot
★★★★★ Excellent 4.8 · 100,000+ happy customers

Real Customers. No shame.

All Confidence.

There's no shame in using medical weight loss to support your health when traditional methods aren't cutting it. Paired with a balanced diet and regular exercise, a weight loss treatment plan can help you overcome biological barriers, maintain healthy habits, and reach your goals.

Watch what our customers have to say about losing weight with Mono Peptides:

↓
▶
00:27
▶
⧉
▶
00:15
▶
⧉
▶
00:36
▶
⧉
▶
00:52
▶
⧉
▶
00:41
▶
⧉
▶
00:33
▶
⧉
▶
00:29
▶
⧉
▶
00:45
▶
⧉

Ready to lose 25% of your body weight?

Let's Go! See pricing
No Hidden Fees No Monthly Membership Cancel Anytime
Trustpilot
★★★★★ Excellent 4.8 · 100,000+ happy customers

Why we're better at weight loss

Direct healthcare, without the long wait times or doctor denials.

Today

▸ Get $150 Off Today!

In 1 day

▸ Provider writes an Rx

Within 1 day

▸ Your order ships from our licensed US pharmacies

Free & Discreet 2-Day Delivery

▸ Get your medication

On-going care & support

▸ Begin treatment
MonoPeptides app on mobile

100k+ Happy Customers :)

Real results, real people. Discover how we've transformed lives.

I am so happy with it

I used to work out 3-5 days per week but was not losing weight. I am down 15 lbs and have lost all cravings. I listen to my body and eat when I am hungry. I have zero side effects.

AJ
— Amy J Verified Buyer

Don't be afraid to try it!

I've lost 6 lbs in the first 2 weeks. I've had no side effects whatsoever so far. I'm on the 2.5 initial dose. I am 64 yo and I think it's an amazing drug.

AJ
— Amy J Verified Buyer

Life-Changing!

I've never felt more confident and supported. The team truly cares about your progress and it shows.

JR
— Jessica R Verified Buyer

Highly Recommend

The process was seamless and the results were faster than I expected. 5 stars!

DT
— Daniel T Verified Buyer

I haven't been a size 4 since High School

I'm 42 and every year I was just getting heavier and heavier. Losing the amount of weight that I did is completely life changing.

SA
— Sarah Verified Buyer

Absolutely incredible!

I take it once a week and I cannot believe how fast I am losing weight. I just don't eat like I used to. I naturally just crave healthier stuff. I'm down to 220 from 245 in only 3 months.

BH
— B.H Verified Buyer

A miracle

A miracle, has changed my life mentally and physically. Also, no desire to drink, a side benefit? I didn't do anything, this is all science.

JJ
— Johnny J Verified Buyer

One week since my first injection, I lost 6 lbs

Today, in one week since my first injection, I lost 6 lbs. The last diet it took me 3 months to lose 10 lbs by starving myself.

MA
— Mary Verified Buyer

The Missing Key

I started at 240 and have consistently let go of a couple pounds a week. Starting the second round and couldn't be happier with it overall.

JA
— James Verified Buyer

Nothing less than a miracle

NO HEAD HUNGER! For the first time in my life, I don't think about food. I don't crave junk food, I get full very quickly and can only eat small amounts.

DT
— Daniel T Verified Buyer

Down 15 lbs!

I used to work out 3-5 days per week but was not losing weight. I am down 15 lbs and have lost all cravings. I listen to my body and eat when I am hungry.

JJ
— Jenny J Verified Buyer

Medications In Stock Ready to Ship

Retatrutide Pen

10mg Retatrutide Pen

One Month Supply
  • Ready-to-use injector
  • Precision dosing
  • Portable design
  • 30 Days Money Back Guarantee

Launch Price

€155

Standard Price

€245

You save €90

Add to Cart

Almost Sold Out

Most Popular
Retatrutide Pen

20mg Retatrutide Pen

Two Month Supply
  • Ready-to-use injector
  • Precision dosing
  • Portable design
  • 30 Days Money Back Guarantee

Launch Price

€285

Standard Price

€425

You save €140

Add to Cart

Limited Batch

Best Value
Retatrutide Pen

60mg Retatrutide Pen

Four Month Supply
  • Ready-to-use injector
  • Precision dosing
  • Portable design
  • 30 Days Money Back Guarantee

Launch Price

€525

Standard Price

€735

You save €210

Add to Cart

In Stock

US-Certified Pharmacy
Personalized Treatments
Trusted by 100k+ Americans
1:1 Medical Support
Get started See pricing
No Hidden Fees No Monthly Membership Cancel Anytime
Trustpilot
★★★★★ Excellent 4.8 · 100,000+ happy customers

We've got you.

You have questions, we have answers.

How does Mono Peptides work?
Mono Peptides connects you with licensed healthcare providers who can prescribe GLP-1 medications. Complete a quick online consultation, get your prescription, and have your medication shipped directly to your door.
How do I know this is safe?
All medications are compounded by licensed US pharmacies and prescribed by board-certified medical providers. Your treatment is supervised by medical professionals throughout the process.
So how does the signup process work?
Simply fill out a health questionnaire, consult with a licensed provider, and if approved, your medication ships directly to you within 1-2 business days.
What States/Jurisdictions are eligible?
Mono Peptides is available in most US states. Check our website during signup to confirm availability in your area.
How does the pricing work?
Pricing starts at $147 per month with no hidden fees. The price includes your medication, prescription, and telemed visits. Same price at every dose level.
What if I need to cancel?
You can cancel anytime with no penalties or cancellation fees. There's no monthly membership or long-term commitment required.
Is the medication real semaglutide & tirzepatide?
Yes. Our medications are compounded semaglutide and tirzepatide, prepared by licensed US compounding pharmacies following FDA guidelines.
Do you offer non-injectable options?
Yes! We offer compounded GLP-1 oral drops (sublingual) as an alternative to injections for those who prefer a needle-free option.
What is the dosage I'll be taking?
Your dosage is personalized based on your medical consultation. Providers typically start with a lower dose and gradually increase based on your response and tolerance.
Where do my prescriptions come from?
Your prescriptions come from board-certified healthcare providers and are filled by licensed US compounding pharmacies.
How do I take my medication?
Injections are self-administered once weekly using a simple pen device. Oral drops are taken sublingually. Full instructions are provided with your medication.
How is it shipped?
Medication is shipped free via discreet 2-day delivery in temperature-controlled packaging to maintain efficacy.
How much weight will I lose?
Clinical trials show patients can lose up to 15% of their body weight. Results vary based on starting weight, diet, exercise, and adherence to treatment.
How do I contact support?
You can reach our support team via email, phone, or live chat. We're available to help you throughout your weight loss journey.
Science & Education

The Science Behind
Retatrutide

Understand exactly how the world's most advanced weight-loss peptide works — the clinical trial data, the metabolic pathways, and what leading scientists say about it.

Start Your Assessment View Clinical Data
28.7%
Avg. weight loss
at 68 weeks
90%+
Patients achieving
10%+ weight loss
80%+
Liver fat
reduction
3×
Metabolic pathways
targeted
Proven Results

The Clinical Trial Data
(Phase 2 & 3)

Published results from peer-reviewed trials and the landmark TRIUMPH-4 Phase 3 study — the largest clinical dataset ever recorded for an obesity drug.

Metric Result
Weight loss at 48 weeks (12mg dose) Up to 24% average body weight reduction
Weight loss at 68 weeks (Phase 3 TRIUMPH-4) 28.7% average — highest ever recorded for an obesity drug
Liver fat reduction Over 80% liver fat reduction at 8–12mg doses
Lean mass preservation Fat mass cut by 26% at 8mg; lean mass largely preserved
Patients achieving 10%+ weight loss Over 90% of participants
Source: New England Journal of Medicine, Phase 2 Trial (2023) + Eli Lilly TRIUMPH-4 Phase 3 results (December 2025)
How It Works

A New Generation of Metabolic Science

Retatrutide is part of a new class of peptides designed to interact with three metabolic signalling pathways simultaneously. This triple-agonist approach is why scientists consider it one of the most exciting metabolic research developments in years.

GLP-1 Pathway

Helps control hunger and keeps you feeling full longer after eating. Slows gastric emptying and increases satiety signalling in the brain.

GIP Pathway

Helps your body use food more efficiently for energy instead of storing it as fat. Enhances insulin secretion from the pancreas and improves glucose uptake.

Glucagon Pathway

Helps your body burn more fat and use more energy throughout the day. Activates glucagon receptors in the liver to increase metabolic rate and energy expenditure.

Mechanism of Action

Metabolic Pathways:
The Incretin Axis & Glucagon

How Retatrutide simultaneously activates three receptor systems to produce its remarkable clinical results.

GLP-1

Glucagon-like peptide-1

▼
GLP-1
RECEPTORS
Satiety
Increases ↑ · Slows
Gastric Emptying
Insulin ↑ · Glucagon ↓

GIP

Glucose-dependent insulinotropic polypeptide

▼
GIP
RECEPTORS
Pancreas
Insulin Secretion ↑
Intestines
Glucose Absorption ↑

Glucagon

 

▼
GLUCAGON
RECEPTORS
Liver
Glycogenolysis ↑ · Gluconeogenesis ↑
Blood Glucose Output
Increases ↑
Pancreas ↑ Insulin ↑ →
GLU
COSE
→ Glucagon ↓ Liver ↑

Glucose Homeostasis

Expert Opinions

What the World's Leading Scientists
Say About Retatrutide

Dr. Peter Attia
"

"Retatrutide is one of the most promising new compounds in the pipeline — the data is remarkable."

Dr. Peter Attia
MD, Stanford/Johns Hopkins · 100M+ podcast
Ben Greenfield
"

"Retatrutide gives me the metabolic effects of an impressive peptide without wrecking my appetite or my gains."

Ben Greenfield
Biohacker · Author · Ironman Triathlete
Dr. Lee M. Kaplan
"

"Stunning — the first triple-hormone combination highly effective for not only weight loss but liver disease and diabetes."

Dr. Lee M. Kaplan
MD — Director, Obesity & Nutrition Institute
Ready to Start?

Take the next step towards
your weight-loss journey

Complete a short medical questionnaire and our team will match you with the right Retatrutide protocol.

Start Your Free Assessment

Takes 3 minutes · No commitment · Free consultation