pT-141 calculator
10 mg in 2 mL = 5 mg/mL, so 1.75 mg is 0.35 mL = 35 units on a U-100 syringe.
Sizes on sale: 10mg. Choose a vial, the water and the amount per draw; prices are the lowest current US offers.
price, vial size and certificate correction
Lowest current US offer for this size.
Most 2–15 mg vials hold 3 mL.
From the lot certificate; it replaces the label amount.
draw 35 units
0.35 mL on a 0.5 mL U-100 syringe
- concentration
- 5 mg/mL
- per unit
- 50 mcg per unit
- full draws per vial
- 5 + 1.25 mg
- cost per draw
- $7.00 · $4.00/mg
5 full draws, then 1.25 mg left (71% of a draw).
the working
- 10 mg ÷ 2 mL = 5 mg/mL
- 1.75 mg ÷ 5 mg/mL = 0.35 mL
- 0.35 mL × 100 = 35 units on a 0.5 mL U-100 syringe
- 10 mg ÷ 1.75 mg = 5.71 → 5 full draws
- $39.99 × 1.75 mg ÷ 10 mg = $7.00 per draw
If this is a prescription, the dose and volume on your pharmacy label take priority. Ask your pharmacist about any mismatch.
cheapest way to buy it · cost per draw of 1.75 mg
| vendor | size | price | $/mg | per draw | checked | calculate with this vial, or view it |
|---|---|---|---|---|---|---|
| Nova Peptide Supply | 10mg | $39.99 | $4.00 | $7.00 | 2026-11-06 | view, PT-141 10mg at Nova Peptide Supply, opens in a new tab |
| Cenexa Labs | 10mg | $44.99 | $4.50 | $7.87 | 2026-11-06 | view, PT-141 10mg at Cenexa Labs, opens in a new tab |
| Amino USA | 10mg | $45.00 | $4.50 | $7.88 | 2026-11-06 | view, PT-141 10mg at Amino USA, opens in a new tab |
| American Peptides | 10mg | $60.00 | $6.00 | $10.50 | 2026-11-06 | view, PT-141 10mg at American Peptides, opens in a new tab |
| LA Peptidesfeatured partnerCOA 10.27 mg | 10mg | $69.99 | $7.00 | $12.25 | 2026-11-03 | view, PT-141 10mg at LA Peptides, opens in a new tab |
In-stock US offers checked in the last 7 days, before shipping. The featured partner is a paid placement and is labelled; order here is by price per mg.
FDA-approved · cited sources
doses of PT-141 used in research
FDA-approved as Vyleesi (bremelanotide, 2019) for premenopausal women with acquired, generalized HSDD; the label dose is 1.75 mg subcutaneously as needed, no more than once in 24 hours. These are the amounts specific labels and studies used, linked to each source. They are references, not recommendations; a prescription label takes priority.
| source | who | amount and schedule | route |
|---|---|---|---|
| Vyleesi label (FDA): 1.75 mg SC as needed FDA label · 2019 · f1d0c1b5-2f39-4bad-a6a4-0066e3ad5dcf | Premenopausal women with acquired, generalized hypoactive sexual desire disorder (not indicated for men or postmenopausal women) | 1.75 mg as needed, at least 45 minutes before anticipated sexual activity; no more than one dose within 24 hours Discontinue after 8 weeks if no improvement; more than 8 doses per month not recommended Each single-dose autoinjector contains 1.75 mg bremelanotide in 0.3 mL, injected in the abdomen or thigh. | subcutaneous |
| Phase 2b dose-finding (Womens Health 2016): 0.75, 1.25 or 1.75 mg SC phase 2 trial · 2016 · PMID:27181790 | Premenopausal women with HSDD, FSAD or both (397 randomized; 327 in the efficacy analysis) | 1.75 mg self-administered as desired about 45 minutes before anticipated sexual activity; no more than one dose per day or 16 doses per 4 weeks 12 weeks Arms were placebo, 0.75, 1.25 and 1.75 mg in 0.3 mL prefilled syringes (thigh or abdomen). Efficacy was shown for the pooled 1.25/1.75 mg arms; 0.75 mg did not differ from placebo. Registered as NCT01382719. | subcutaneous |
| Pilot crossover (J Sex Med 2006): single 20 mg intranasal dose human pilot study · 2006 · PMID:16839319 | 18 premenopausal women with female sexual arousal disorder | 20 mg single dose per in-clinic session (crossover with placebo) Two treatment sessions Early intranasal formulation; the approved product is a subcutaneous injection. | intranasal |
Sources checked Nov 4, 2026.
PT-141 10mg in 2 mL
amount to syringe units
| amount | mL | U-100 units | U-40 units |
|---|---|---|---|
| 100 mcg | 0.02 | 2 | 0.8 |
| 250 mcg | 0.05 | 5 | 2 |
| 500 mcg | 0.1 | 10 | 4 |
| 1 mg | 0.2 | 20 | 8 |
| 2 mg | 0.4 | 40 | 16 |
| 2.5 mg | 0.5 | 50 | 20 |
| 5 mg | 1 | 100 | 40 |
One unit on a U-100 syringe is 0.01 mL; on a U-40 it is 0.025 mL.
every PT-141 vial size on sale
reconstitution chart
| vial | 1 mL water | 2 mL water | 3 mL water | 5 mL water |
|---|---|---|---|---|
| 10 mg | 10 mg/mL 10 units = 1 mg | 5 mg/mL 10 units = 0.5 mg | 3.333 mg/mL 10 units = 0.333 mg | 2 mg/mL 10 units = 0.2 mg |
10 units on a U-100 syringe is 0.1 mL. Every cell is exact arithmetic: amount ÷ water.
what the numbers mean · where they come from
terms and sources
- Label amount or measured amount. The calculator starts from the amount printed on the vial. A lot certificate’s measured content (net peptide content, in mg) can replace it for the vial that was tested. HPLC purity is a share of peak area, not a mass, so a purity-only correction is shown as an estimate. See HPLC, certificate of analysis and how to read a peptide COA.
- Concentration. Amount in the vial ÷ water added. Terms: reconstitution, bacteriostatic water, lyophilized.
- Syringe units. A volume: 0.01 mL per unit on a U-100 syringe, 0.025 mL on U-40. Units say nothing about the compound until the concentration is known.
- Cost per draw. Vial price × amount per draw ÷ vial amount, from the price per mg of a current offer. Offers come from the PT-141 price comparison; certificates from the COA library.
Arithmetic only, on the numbers entered. Amounts from labels or trials are cited references, not recommendations; PeptideTech does not give personal use instructions and does not test products.
short answers
PT-141 calculator questions
How much bacteriostatic water do I add to PT-141 10mg?
What changes the calculated concentration?
How many units is 1.75 mg of PT-141?
What doses of PT-141 were used in research?
What does PT-141 cost per mg?
How much PT-141 is really in the vial?
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