Dec 16, 2025
Not all weight loss peptides work the same way!!!
Some suppress appetite, others increase fat burning.
Some do both…
The main categories:
GLP-1 receptor agonists (semaglutide, tirzepatide) - Reduce hunger, slow digestion, improve insulin sensitivity. These are the most powerful for pure weight loss.
Growth hormone peptides (Ipamorelin, CJC-1295) - Enhance metabolism, preserve muscle during weight loss, improve body composition. Less dramatic weight loss, but better overall results.
Lipolytic peptides (HGH Fragment 176-191) - Target fat cells directly, mobilize stored fat for energy. Work best combined with diet and exercise.
Metabolic peptides (MOTS-C, AOD9604) - Improve mitochondrial function and metabolic efficiency. Subtle but sustainable fat loss.
Let's break down each category and help you choose.
GLP-1 peptides: the heavyweights
Semaglutide (Ozempic/Wegovy)
Semaglutide is the peptide everyone's talking about. For good reason - it works.
Clinical trials show 15-20% total body weight loss over 68 weeks at maximum dose. That's 30-40 pounds for a 200-pound person. This is pharmaceutical-grade weight loss.
How it works:
Activates GLP-1 receptors in your brain and gut
Dramatically reduces appetite and food cravings
Slows gastric emptying (you feel full longer)
Improves insulin sensitivity and blood sugar control
The protocol:
Start: 0.25mg once weekly
Week 5-8: Increase to 0.5mg
Week 9-12: Increase to 1mg
Week 13-16: Increase to 1.7mg (if needed)
Maximum: 2.4mg weekly
This gradual titration minimizes side effects. Most people find their sweet spot at 1-1.7mg weekly.
Results timeline:
Weeks 1-4: Reduced appetite, 2-4 pounds lost
Weeks 5-12: Consistent 1-2 pounds weekly loss
Weeks 13-24: Continued steady loss, 15-25 pounds total
Weeks 25-52: Plateau and maintenance phase
Use our semaglutide dosage calculator to plan your complete titration schedule with dose escalation timing and expected results.
Side effects:
Nausea (20-30% of users, improves over time)
Constipation or diarrhea
Reduced appetite (this is the point, but can be intense)
Fatigue in first few weeks
Potential gallbladder issues with rapid weight loss
Most side effects are manageable with proper dosing escalation and dietary adjustments.
Tirzepatide (Mounjaro/Zepbound)
Tirzepatide is newer and arguably more effective than semaglutide. It's a dual GIP/GLP-1 agonist.
Clinical data shows 20-25% body weight loss - slightly better than semaglutide. Some users lose 50+ pounds.
How it works:
Activates both GIP and GLP-1 receptors
Even stronger appetite suppression than semaglutide
Better insulin sensitivity improvements
May preserve more muscle mass during weight loss
The protocol:
Start: 2.5mg once weekly
Week 5: Increase to 5mg
Week 9: Increase to 7.5mg (if needed)
Week 13: Increase to 10mg (if needed)
Maximum: 15mg weekly
Tirzepatide doses are higher in milligrams but follow the same gradual escalation principle.
Results timeline:
Similar to semaglutide but often faster
Average 2-3 pounds weekly at therapeutic doses
25-35 pounds in first 6 months is common
Better muscle preservation than semaglutide
Side effects:
Similar to semaglutide but potentially more intense
Higher doses = more GI issues
Start low, go slow with titration
Which GLP-1 should you choose?
Choose semaglutide if:
You want proven, reliable results
You're sensitive to side effects (easier to find your sweet spot)
Cost is a factor (semaglutide is cheaper)
You want the most research backing
Choose tirzepatide if:
You want maximum weight loss potential
Semaglutide wasn't quite enough
You're willing to pay more for better results
Preserving muscle is a priority
Both work. Tirzepatide is slightly more effective but costs more and has more intense side effects for some users.
Growth hormone peptides: body recomposition specialists
GH peptides don't create dramatic weight loss like GLP-1s. But they improve body composition - less fat, more muscle, better metabolism.
Ipamorelin
Ipamorelin stimulates your body's natural growth hormone production. More GH = better fat metabolism and muscle preservation.
How it works:
Triggers growth hormone pulses from pituitary
Enhances lipolysis (fat breakdown)
Improves insulin sensitivity
Preserves or builds lean muscle during calorie deficit
The protocol:
Dose: 200-300mcg per injection
Frequency: 2-3 times daily (before meals and bedtime)
Duration: 8-12 weeks
Best results: Combined with strength training
Expected results:
5-10 pounds fat loss over 12 weeks
Visible improvement in body composition
Better muscle definition
Enhanced metabolism
This isn't dramatic weight loss, but you'll look better at the same weight because you're losing fat while maintaining or gaining muscle.
Use peptide dosage calculator to determine your exact Ipamorelin dose based on body weight and goals.
CJC-1295
CJC-1295 extends the duration of growth hormone elevation. It pairs perfectly with Ipamorelin.
How it works:
Extends natural GH pulses
Maintains elevated GH levels between Ipamorelin doses
Improves overall metabolism
Enhances fat oxidation
The protocol:
Dose: 200-300mcg per injection
Frequency: 2-3 times weekly
Duration: 8-16 weeks
Stack with: Ipamorelin for synergistic effects
Expected results:
Similar to Ipamorelin but more sustained
Better when stacked than used alone
8-12 pounds fat loss over 12-16 weeks
Noticeable improvement in muscle-to-fat ratio
The Ipamorelin + CJC-1295 stack
This is the gold standard growth hormone stack for body recomposition.
The protocol:
Morning: Ipamorelin 200mcg
Pre-workout: Ipamorelin 200mcg
Evening: Ipamorelin 200mcg + CJC-1295 200mcg (Monday/Thursday)
Duration: 12-16 weeks
Use our peptide stack calculator to plan your complete stacking protocol with injection timing and cost breakdown.
Expected results over 12 weeks:
10-15 pounds fat loss
3-5 pounds muscle gain (if training properly)
Net result: Better body composition, possibly same scale weight
Improved metabolic markers
Better sleep and recovery
Lipolytic peptides: direct fat mobilization
HGH Fragment 176-191
HGH Fragment is the specific portion of growth hormone responsible for fat loss, without the muscle-building effects.
It's popular because it targets fat cells directly and has minimal side effects.
How it works:
Stimulates lipolysis in fat cells
Inhibits lipogenesis (new fat storage)
Particularly effective on stubborn fat areas
Works best in fasted state
The protocol:
Dose: 250-500mcg per injection
Frequency: Once daily, before fasted cardio
Duration: 8-12 weeks
Timing: Morning on empty stomach, wait 30-45 minutes before eating
Expected results:
8-12 pounds fat loss over 12 weeks
Better results with consistent fasted cardio
Targets stubborn fat areas (belly, love handles)
No muscle loss during calorie deficit
Use our HGH fragment calculator to determine your dose based on body weight and fat loss goals.
HGH Fragment mobilizes fat from storage. You still need to burn it through exercise and calorie deficit. It makes fat available for energy - you have to actually use that energy.
AOD9604
AOD9604 is similar to HGH Fragment but with slight structural modifications for better stability.
How it works:
Similar fat mobilization to HGH Fragment
May have better oral bioavailability
Reduces fat accumulation
Improves metabolic markers
The protocol:
Dose: 300-500mcg per injection
Frequency: Once daily
Duration: 8-16 weeks
Best results: Morning fasted
Expected results:
Comparable to HGH Fragment
6-10 pounds over 12 weeks with proper diet
Better when combined with cardio
AOD9604 is less popular than HGH Fragment but works through similar mechanisms.
Metabolic optimization peptides
MOTS-C
MOTS-C is a mitochondrial peptide that improves cellular energy metabolism. Weight loss is a side effect of better metabolic function.
How it works:
Enhances mitochondrial efficiency
Improves insulin sensitivity
Increases metabolic flexibility (better fat burning)
Reduces metabolic stress
The protocol:
Dose: 5-10mg per injection
Frequency: 2-3 times weekly
Duration: 8-12 weeks
Best timing: Morning before breakfast
Expected results:
5-8 pounds over 12 weeks
Better energy levels
Improved body composition
Enhanced metabolic health markers
MOTS-C is subtle. You won't see dramatic scale movement, but your body becomes better at burning fat for fuel.
Comparing all options: which peptide for you?
Let's get practical about choosing.
For maximum weight loss (20-50+ pounds): → Semaglutide or Tirzepatide → Most effective, fastest results → Use: Semaglutide dosage calculator
For body recomposition (look better, not just lighter): → Ipamorelin + CJC-1295 stack → Lose fat, gain muscle simultaneously → Use: Peptide stack calculator
For stubborn fat with minimal side effects: → HGH Fragment 176-191 → Targets problem areas, very well-tolerated → Use: HGH fragment calculator
For metabolic health + gradual fat loss: → MOTS-C → Improves insulin sensitivity, sustainable results → Lower cost, fewer injections
For complete transformation (advanced): → Stack GLP-1 + Growth Hormone peptides → Semaglutide for appetite + Ipamorelin for muscle preservation → Maximum fat loss with muscle protection
Stacking strategies for maximum results
Single peptides work. Strategic stacks work better.
Stack #1: Aggressive fat loss with muscle preservation
Semaglutide: 1mg weekly
Ipamorelin: 200mcg morning and evening
Duration: 12-16 weeks
Result: 25-35 pounds fat loss, minimal muscle loss
Stack #2: Body recomposition
Ipamorelin: 200mcg 3x daily
CJC-1295: 200mcg 2x weekly
HGH Fragment: 250mcg morning fasted
Duration: 12-16 weeks
Result: 12-18 pounds fat loss, 3-5 pounds muscle gain
Stack #3: Stubborn fat targeting
HGH Fragment: 300mcg morning fasted
MOTS-C: 5mg twice weekly
Duration: 8-12 weeks
Result: 10-15 pounds, improved metabolic markers
Use our peptide cost calculator to budget for any stack before starting.
Side effects and safety considerations
All weight loss peptides have potential side effects, though severity varies.
GLP-1 peptides (semaglutide, tirzepatide):
Nausea and GI issues (very common at first)
Gallbladder problems (rare, but monitor)
Reduced appetite (sometimes too much)
Fatigue during initial adaptation
Not suitable for: History of pancreatitis, thyroid cancer
Growth hormone peptides:
Water retention (temporary)
Joint discomfort (usually mild)
Carpal tunnel symptoms (rare, at high doses)
Insulin resistance (monitor blood sugar)
Not suitable for: Active cancer, uncontrolled diabetes
Lipolytic peptides:
Minimal side effects overall
Occasional injection site irritation
Mild headaches (rare)
Generally very well-tolerated
General safety notes:
Start with lowest effective dose
Titrate slowly to minimize side effects
Use sterile injection technique always
Store peptides properly (refrigerated after reconstitution)
Monitor your response and adjust accordingly
These are research chemicals, not FDA-approved drugs
What to expect: realistic timelines
Be honest about expectations. Peptides aren't magic.
Weeks 1-4:
GLP-1s: Noticeable appetite reduction, 4-8 pounds lost
GH peptides: Minimal weight loss, improved energy
Lipolytic: 2-4 pounds if diet is dialed in
Weeks 5-12:
GLP-1s: Steady 1-2 pounds weekly, 12-20 pounds total
GH peptides: 6-10 pounds fat loss, visible body recomposition
Lipolytic: 6-10 pounds with consistent fasted cardio
Weeks 13-24:
GLP-1s: 20-35 pounds total, reaching plateau phase
GH peptides: 12-18 pounds fat loss, significant muscle definition
Lipolytic: 12-15 pounds, stubborn fat areas improving
Beyond 24 weeks:
GLP-1s: Maintenance phase, weight stable
GH peptides: Can cycle off or continue maintenance dose
Lipolytic: Cycle off, results maintained with proper lifestyle
The faster you lose weight, the more likely you'll regain it. Sustainable fat loss is 1-2 pounds weekly maximum.
Diet and training while on peptides
Peptides aren't a free pass to eat garbage and skip exercise.
Diet principles:
GLP-1s: Your appetite will drop dramatically. Focus on protein-rich, nutrient-dense foods in smaller portions.
GH peptides: Maintain slight calorie deficit (300-500 below maintenance) with high protein (1g per pound body weight).
Lipolytic peptides: Fasted cardio in morning, then normal healthy eating. Moderate calorie deficit.
Training recommendations:
GLP-1s: Maintain strength training to preserve muscle. Reduced calories = reduced recovery capacity.
GH peptides: Progressive overload strength training 3-4x weekly. GH peptides enhance recovery.
Lipolytic peptides: Low-intensity fasted cardio (walking, cycling). Don't overdo it.
Common mistakes:
Cutting calories too low on GLP-1s (muscle loss, metabolic damage)
Expecting fat loss from GH peptides without training
Not doing any cardio with HGH Fragment (it mobilizes fat, you must burn it)
Neglecting protein intake (muscle loss guaranteed)
Cost analysis: budgeting your protocol
Weight loss peptides vary dramatically in cost.
Semaglutide:
Research peptide: $150-250 per month
Pharmaceutical (Wegovy): $1,000-1,500 per month without insurance
Total 6-month cycle: $900-1,500 (research peptide)
Tirzepatide:
Research peptide: $200-300 per month
Pharmaceutical (Zepbound): $1,000-1,500 per month
Total 6-month cycle: $1,200-1,800
Ipamorelin + CJC-1295:
Combined cost: $200-300 per month
Total 12-week cycle: $600-900
HGH Fragment 176-191:
Cost: $150-200 per month
Total 12-week cycle: $450-600
Stacked protocols:
Semaglutide + Ipamorelin: $350-500 per month
Full recomposition stack: $400-600 per month
Research peptides are dramatically cheaper than pharmaceutical versions. Quality varies, so source carefully.
Calculate your exact costs using our peptide cost calculator before committing to any protocol.
Choosing your weight loss peptide
Here's the decision tree:
Need to lose 30+ pounds? → Semaglutide or Tirzepatide → Nothing else comes close for pure weight loss
Want to lose fat and build muscle simultaneously? → Ipamorelin + CJC-1295 stack → Body recomposition over scale weight
Targeting stubborn fat areas? → HGH Fragment 176-191 → Works best with fasted cardio
Want gradual, sustainable fat loss? → MOTS-C or growth hormone peptides → Slower but better metabolic adaptation
Already lean but want the final 10 pounds off? → HGH Fragment + growth hormone stack → Precision fat loss without muscle sacrifice
Most people benefit from starting with a single peptide, assessing response, then adding others if needed.
GLP-1s give you the biggest bang for your buck if pure weight loss is the goal.
Growth hormone peptides give you better body composition results.
Calculate your protocols:
Semaglutide dosage calculator - complete titration schedule
HGH fragment calculator - fat loss protocol
Peptide stack calculator - combine multiple safely
Peptide cost calculator - budget accurately
Get your protocol dialed in. Stay consistent. Let the peptides work.
The weight comes off. And this time, it stays off.
In case I don’t see you, good afternoon, good evening, and good night. Take care of yourself.



