Peptide Comparison
CagrilintidevsTB-500
Long-acting amylin analog that supercharges satiety signals, delivering powerful appetite suppression and up to 10-15% weight loss with convenient once-weekly dosing.
A powerful fragment of thymosin beta-4 that acts like your body's repair signal—speeding up healing of muscles, tendons, and tissues by promoting cell migration and new blood vessel growth right where you need it most.
At a Glance
Quick
comparison
Dose Range
Cagrilintide
0.3–4.5 mg
TB-500
2–5 mg
Frequency
Cagrilintide
Once weekly
TB-500
Twice weekly
Administration
Cagrilintide
Subcutaneous injection
TB-500
Subcutaneous injection
Cycle Length
Cagrilintide
Ongoing/indefinite
TB-500
4-6 weeks
Onset Speed
Cagrilintide
Gradual (3-4 weeks)
TB-500
Moderate (1-2 weeks)
Evidence Level
Cagrilintide
Strong human trials (Phase 3 or FDA approved)
TB-500
Moderate human trials (Phase 1-2)
Efficacy
Benefit
ratings
Appetite Control
Weight Loss
GLP-1 Synergy
Healing Speed
Tissue Repair
Anti-Scarring
Technical Data
Compound
specifications
Cagrilintide
Molecular Formula
C194H312N54O59S2
Molecular Weight
4409 g/mol
Half-Life
159-195 hours (~7-8 days)
Bioavailability
~100% (subcutaneous)
CAS Number
1415456-99-3
TB-500
Molecular Formula
C38H68N10O14
Molecular Weight
889.01 g/mol
Half-Life
2-3 days (systemic)
Bioavailability
High via subcutaneous injection (~100%)
CAS Number
885340-08-9
Protocols
Dosing
tiers
Cagrilintide
TB-500
Applications
Best
suited for
Cagrilintide
Weight loss and appetite control
Cagrilintide excels at reducing hunger by mimicking amylin, a hormone your pancreas naturally releases after meals. Phase 2 trials showed people losing up to 10.8% of body weight with cagrilintide alone - and that's without combining it with other medications.
Boosting GLP-1 medication results
When you hit a plateau with semaglutide or want even better results, cagrilintide adds a second satiety pathway. The CagriSema combination achieved over 20% weight loss in clinical trials - significantly more than either drug alone.
People who want once-weekly convenience
Unlike older amylin medications that required three daily injections, cagrilintide's extended half-life of about a week means you only inject once weekly. Set a reminder on your phone and you're done.
Those seeking natural-feeling appetite reduction
Cagrilintide works by enhancing your body's own fullness signals rather than forcing you to eat less. Many users report feeling genuinely satisfied with smaller meals rather than fighting willpower battles.
Metabolic health improvement
Beyond weight loss, cagrilintide helps with blood sugar control and metabolic markers. It slows stomach emptying and reduces post-meal glucose spikes, making it valuable for people with or at risk for type 2 diabetes.
TB-500
Athletes Recovering from Muscle Injuries
If you've pulled a hamstring, strained your back, or torn a muscle, TB-500 helps accelerate the healing process by promoting cell migration to the injury site and supporting new blood vessel growth. It's especially useful for injuries that just won't seem to fully heal.
Tendon and Ligament Problems
Tendons and ligaments are notoriously slow healers because they have poor blood supply. TB-500 promotes angiogenesis (new blood vessel formation) and helps repair these stubborn connective tissue injuries—think Achilles tendonitis, tennis elbow, or rotator cuff issues.
Post-Surgical Recovery
After surgery, your body needs to repair a lot of tissue quickly. TB-500 supports wound healing, reduces inflammation, and may help minimize scar tissue formation. Some protocols use it alongside traditional recovery to potentially speed up the healing timeline.
Chronic Inflammation and Slow Healers
Some people just heal slowly—whether due to age, diabetes, or other factors. TB-500 helps regulate the inflammatory response and promotes the cellular processes needed for tissue repair. It essentially tells your body to focus healing resources where they're needed most.
Safety Profile
Side
effects
Cagrilintide
Common
- Nausea
- Constipation
- Diarrhea
- Injection site reactions
Uncommon
- Vomiting
- Headache
Serious
- Severe allergic reactions
TB-500
Common
- Injection site redness
- Mild fatigue or lethargy
- Mild headache
- Slight flushing
Uncommon
- Head rush or lightheadedness
- Temporary nausea
Serious
- Allergic reaction
Research Status
Safety
& evidence
Cagrilintide
Evidence Level
Strong human trials (Phase 3 or FDA approved)
FDA Status
Not FDA approved
Safety Overview
Cagrilintide has been studied in multiple Phase 2 and Phase 3 trials involving thousands of participants. The safety profile is generally favorable, with most side effects being GI-related (nausea, constipation, diarrhea) that improve with time and gradual dose escalation. Serious adverse events are rare, and the drug was well-tolerated even at the highest studied doses.
Contraindications
- xPregnancy or breastfeeding
- xActive eating disorders
- xPersonal history of medullary thyroid carcinoma
- xSevere gastroparesis
TB-500
Evidence Level
Moderate human trials (Phase 1-2)
FDA Status
Research compound
Safety Overview
TB-500 has shown a good safety profile across preclinical studies and limited human research. It's a fragment of thymosin beta-4, a naturally occurring protein in your body involved in healing. Most side effects are mild and transient, primarily injection site reactions. However, large-scale clinical trials are still needed to fully establish its safety profile in humans.
Contraindications
- xPregnancy or planning to become pregnant
- xCurrently breastfeeding
- xActive cancer or history of cancer
- xKnown allergy to peptide components
- xChildren and adolescents
Decision Guide
Which is
right for you?
Choose Cagrilintide if...
- Weight loss
- Appetite control
- Metabolic health
- GLP-1 augmentation
Choose TB-500 if...
- Accelerating injury recovery
- Tendon and ligament healing
- Reducing chronic inflammation
- Post-surgical recovery support