Calculate your peptide cost per dose, per day, per week, and per month. Find out how many vials you need and plan your research budget.
Enter vial price, vial size, and desired dose to see your cost breakdown.
The cost of a peptide vial alone doesn't tell the whole story. Two vials at the same price but different sizes yield very different per-dose costs. This calculator helps you compare vendors on an apples-to-apples basis by breaking the price down to the dose level.
When comparing shops, also consider shipping costs, minimum order quantities, and any bulk discounts that may bring down your effective per-vial price.
Peptide costs vary dramatically by compound class. The ranges below reflect research-grade peptide pricing across vendors listed on Peptigrity, using mid-range dose protocols. Use the calculator above with your specific vendor's price for exact numbers.
| Peptide | Typical Vial Price | Common Dose | Daily Cost Estimate |
|---|---|---|---|
| BPC-157 | $25-$50 (5-10 mg) | 250-500 mcg/day | $0.63-$2.50 |
| TB-500 | $30-$60 (5-10 mg) | 2-5 mg 2×/week | $1.70-$4.30 (amortized) |
| GHK-Cu | $20-$45 (50 mg) | 1-2 mg/day | $0.40-$1.80 |
| Peptide | Typical Vial Price | Common Dose | Weekly Cost Estimate |
|---|---|---|---|
| Semaglutide | $80-$250 (2-5 mg) | 250-2,500 mcg/week | $10-$50 |
| Tirzepatide | $100-$300 (5-15 mg) | 2.5-15 mg/week | $17-$50 |
| Retatrutide | $120-$280 (4-12 mg) | 1-12 mg/week | $10-$35 |
| Peptide | Typical Vial Price | Common Dose | Daily Cost Estimate |
|---|---|---|---|
| Ipamorelin | $20-$40 (5 mg) | 100-300 mcg/day | $0.40-$2.40 |
| CJC-1295 without DAC | $20-$45 (5 mg) | 100 mcg/day | $0.40-$0.90 |
| Sermorelin | $25-$55 (5 mg) | 100-300 mcg/day | $0.50-$3.30 |
| Peptide | Typical Vial Price | Common Dose | Daily Cost Estimate |
|---|---|---|---|
| Selank | $15-$35 (5 mg) | 250-500 mcg/day | $0.75-$3.50 |
| Semax | $15-$35 (5 mg) | 200-500 mcg/day | $0.60-$3.50 |
Note: These are approximate ranges for research-grade peptides. Compounding pharmacy prices for FDA-regulated compounds such as semaglutide and tirzepatide differ substantially from research-grade pricing.
The vial price captures 70-85% of total peptide cost. The remainder comes from supplies and shipping that most calculators ignore.
| Supply | Typical Cost | Lasts |
|---|---|---|
| Bacteriostatic water (30 mL) | $5-$15 | 10-15 reconstitutions |
| Insulin syringes (100-count box) | $10-$18 | 100 injections |
| Alcohol swabs (200-count box) | $4-$8 | 200 injections |
| Cold shipping (if required) | $5-$15 per order | 1 shipment |
For a single-peptide protocol such as BPC-157 at 250 mcg/day using a 10 mg vial, ancillary costs add approximately $0.15-$0.30 per dose on top of the peptide cost. This matters less for expensive compounds like semaglutide but can represent 15-25% of the true cost for inexpensive peptides.
Sticker price comparisons between vendors are misleading without normalizing for 3 variables - vial size, purity, and included supplies.
The most reliable comparison metric is cost per milligram of active peptide. Divide the vial price by the vial size in mg. A $45 vial of 10 mg BPC-157 costs $4.50/mg. A $28 vial of 5 mg costs $5.60/mg. The cheaper vial is more expensive per milligram.
A vial labeled "10 mg" at 95% purity contains 9.5 mg of actual peptide. The same vial at 99% purity contains 9.9 mg. At equal prices, the 99% vial delivers 4.2% more active compound. Independent HPLC purity testing is the only way to verify purity claims. Check lab test results on Peptigrity before comparing costs, or use the purity comparison tool to see tested purity across brands side by side.
Some vendors include bacteriostatic water and syringes with vial purchases. Others charge separately. A $55 "kit" that includes BAC water and syringes may cost less overall than a $40 vial plus $12 for water and $15 for syringes from separate sources.
Many protocols combine 2-3 peptides in a stack, which multiplies monthly cost. The calculator handles one peptide at a time - run it separately for each compound, then add the results.
| Stack | Compounds | Combined Daily/Weekly Cost | Combined Monthly Cost |
|---|---|---|---|
| BPC-157 + TB-500 (Wolverine) | BPC-157 250 mcg/day + TB-500 2.5 mg 2×/week | ~$2.50-$5.00/day | ~$70-$140 |
| CJC-1295 + Ipamorelin | CJC-1295 100 mcg + Ipamorelin 200 mcg, 5×/week | ~$1.50-$3.50/day | ~$42-$98 |
| GLP-1 monotherapy | Semaglutide 1 mg/week | ~$20-$50/week | ~$80-$200 |
The lowest-priced vial is not always the cheapest per dose of active peptide. A vial with 95% purity delivers less active compound than one at 99% purity, even at identical label weights.
Purity-adjusted cost per mg = Vial price ÷ (Vial size × Purity %)
| Metric | Vendor A (tested 99.1%) | Vendor B (no test data) |
|---|---|---|
| Vial price | $48 | $22 |
| Labeled vial size | 10 mg | 10 mg |
| Estimated active content | 9.91 mg | Unknown |
| Cost per mg (labeled) | $4.80 | $2.20 |
| Cost per mg (purity-adjusted) | $4.84 | Unknown |
Vendor B appears 54% cheaper - but without third-party purity data, the actual active content is unknown. If that vial tests at 85% purity, the true cost per mg of active peptide rises to $2.59/mg. This is why Peptigrity publishes independent HPLC and mass spectrometry test results. Cost per dose only means something when the dose contains what it claims.
Larger vials offer better per-milligram pricing, but only if you use the full vial before it degrades. Reconstituted peptides stored in bacteriostatic water at 2-8°C remain stable for approximately 28-30 days. Any peptide remaining after that window is wasted.
| Metric | 10 mg vial | 5 mg vial |
|---|---|---|
| Doses per vial (250 mcg) | 40 | 20 |
| Days to use full vial | 40 days | 20 days |
| Within 28-day window? | No - 12 doses wasted | Yes |
| Effective doses | 28 | 20 |
| Vial price | $45 | $28 |
| Effective cost per dose | $1.61 | $1.40 |
The 10 mg vial is cheaper per milligram, but at this dosing frequency, 30% of the peptide expires before use. The smaller vial delivers every dose within the stability window and costs less per effective dose. For complete storage guidance, see how to store peptides.
Divide the vial price by the number of doses in the vial. Doses per vial = vial size (in mcg) ÷ your dose per administration (in mcg). A $40 vial containing 10 mg (10,000 mcg) of BPC-157 at 250 mcg per dose delivers 40 doses at a cost of $1.00 per dose.
Price reflects manufacturing costs, testing overhead, vendor margin, and brand positioning - not purity directly. A $50 vial from a vendor publishing independent HPLC lab tests showing 99%+ purity provides more certainty than a $20 vial with no test data. The best value indicator is cost per milligram of verified active peptide, not sticker price.
Monthly costs range from approximately $20-$60 for single-peptide tissue repair protocols (BPC-157 or TB-500), $40-$100 for growth hormone secretagogue stacks (CJC-1295 + ipamorelin), and $80-$250 for GLP-1 compounds (semaglutide, tirzepatide). Multi-peptide stacks multiply these costs.
Larger vials nearly always cost less per milligram, but the savings only materialize if you consume the full vial within the 28-30 day stability window after reconstitution. Calculate your total dose requirement over 28 days (dose × frequency × 28) and compare it to the vial size. Buy the vial size that most closely matches your 28-day consumption.
Ancillary supplies add approximately $0.15-$0.30 per dose - meaningful for inexpensive peptides but marginal for compounds like semaglutide where the peptide itself dominates total cost. Factor these in for accurate budgeting, especially for multi-month protocols.
Compounding pharmacy semaglutide and tirzepatide typically cost $150-$500+ per month with a prescription, compared to $80-$250 for research-grade vials. Compounding pharmacies operate under FDA 503A/503B regulations and provide pharmaceutical-grade products with regulatory oversight. Research-grade peptides are sold for laboratory use only and carry different quality assurance and legal considerations.
This calculator is for educational and informational purposes only and does not constitute medical advice. Peptides discussed may be investigational compounds not approved by the FDA for human use. Always consult a qualified healthcare provider. Peptigrity is an independent review platform and does not sell, endorse, or recommend specific products or vendors.