Side-by-side comparison

Semaglutide

GLP-1 PeptideSafety 8/10

Metabolic / weight research

vs

Tirzepatide

GIP/GLP-1 PeptideSafety 8/10

Metabolic / weight research

Semaglutide
Tirzepatide
Cheapest price
$26.25 /5mg
$6.75 /5mg
Vendors stocking
11
13
Safety rating
8/10
8/10
Mol. weight
4,113.58 g/mol
4,813.45 g/mol
Administration
Subcutaneous injection
Subcutaneous injection

Price Comparison — 2026

Semaglutide

VendorPrice
Optimum Formula$26.25 /5mgBuy →
Peptira$29.75 /5mgBuy →
Chameleon Peptides$34.65 /5mgBuy →
Evolve Peptides$42.48 /5mgBuy →
Pinnacle Peptide Labs$42.49 /5mgBuy →

Tirzepatide

VendorPrice
Puratek Peptides$6.75 /5mgBuy →
Red River Peptides$7.79 /5mgBuy →
Peptyx Labs$14.67 /5mgBuy →
Chameleon Peptides$16.19 /5mgBuy →
Peptira$16.58 /5mgBuy →
Optimum Formula$22.50 /5mgBuy →

Vendors Carrying Both

8 vendors stock both Semaglutide and Tirzepatide — convenient if you want to bundle an order.

Chameleon PeptidesSemaglutide: $34.65Tirzepatide: $16.19Visit →
PeptiraSemaglutide: $29.75Tirzepatide: $16.58Visit →
Optimum FormulaSemaglutide: $26.25Tirzepatide: $22.50Visit →
Evolve PeptidesSemaglutide: $42.48Tirzepatide: $27.62Visit →
LA PeptidesSemaglutide: $64.99Tirzepatide: $28.33Visit →
TRS ResearchSemaglutide: $55.00Tirzepatide: $31.25Visit →
Pinnacle Peptide LabsSemaglutide: $42.49Tirzepatide: $42.50Visit →
Spartan PeptidesSemaglutide: $225.00Tirzepatide: $118.75Visit →

Safety Notes

Semaglutide

FDA: FDA-approved (Ozempic/Wegovy)

Extensive safety data; GI side effects common but manageable; cardiovascular benefit; thyroid warning animal-only

Tirzepatide

FDA: FDA-approved (Mounjaro/Zepbound)

Extensive Phase III data; GI side effects manageable; thyroid warning animal-only; strong efficacy

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