semax calculator

10 mg in 2 mL = 5 mg/mL; 10 units on a U-100 syringe holds 0.5 mg.

Sizes on sale: 5mg, 10mg, 30mg. Choose a vial, the water and the amount per draw; prices are the lowest current US offers.

search a compound or a supplier’s vial

amount in the vial

bacteriostatic water added

amount per draw

syringe · picked to fit the draw

price, vial size and certificate correction

vial price (optional)

USD

Lowest current US offer for this size.

vial holds (optional)

Most 2–15 mg vials hold 3 mL.

measured content on the COA

From the lot certificate; it replaces the label amount.

or HPLC purity

Certificates on file for this compound:

LA Peptides 10mg · lot 1818 · 2026-10-06 · Bioviridian Inc.: 12.02 mg measured, 99.87% purityCOA
Amino Club 10mg · lot SMX0002 · 2026-07-30: 10.61 mg measured, 99.93% purityCOA

5 mg/mL

10 units holds 0.5 mg

concentration: 5 mg/mL
per unit: 50 mcg per unit
full draws per vial: —
cost per draw: —

the working

10 mg ÷ 2 mL = 5 mg/mL

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

vendor	size	price	$/mg	checked	calculate with this vial, or view it
Amino USA	30mg	$75.00	$2.50	2026-11-06	view, Semax 30mg at Amino USA, opens in a new tab
Nova Peptide Supply	10mg	$34.99	$3.50	2026-11-06	view, Semax 10mg at Nova Peptide Supply, opens in a new tab
LA Peptidesfeatured partnerCOA 12.02 mg	10mg	$39.99	$4.00	2026-11-03	view, Semax 10mg at LA Peptides, opens in a new tab
Cenexa Labs	10mg	$43.99	$4.40	2026-11-06	view, Semax 10mg at Cenexa Labs, opens in a new tab
American Peptides	10mg	$65.00	$6.50	2026-11-06	view, Semax 10mg at American Peptides, opens in a new tab
Cenexa Labs	5mg	$39.99	$8.00	2026-11-06	view, Semax 5mg at Cenexa Labs, 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.

updated Nov 4, 2026 · exact arithmetic, checked against 21 worked cases · prices from offers checked in the last 7 days

approved outside the US · cited sources

doses of Semax used in research

Registered in Russia (Peptogen) as 0.1% and 1% nasal drops; labels give 200-2,000 mcg per dose for cognitive disorders and 2,000-4,000 mcg per dose for acute ischemic stroke. These are the amounts specific labels and studies used, linked to each source. They are references, not recommendations; a prescription label takes priority.

Doses of Semax used in labels and published studies
source	who	amount and schedule	route
Russian label (Semax 1%): moderate ischemic stroke, 2,000-3,000 mcg per dose label outside the US · 2025 · LP-No(010596)-(RG-RU)	Adults with acute moderate ischemic stroke, as part of combined therapy	2000 mcg 3-4 times daily, 3-4 h apart 10 days Range 2,000-3,000 mcg per dose (2-3 drops of 1% solution per nostril; 500 mcg per drop), 6,000-12,000 mcg/day. Severe stroke: 3,000-4,000 mcg 4-5 times daily, 2.5-3 h apart (12,000-20,000 mcg/day). Contraindicated under 18.	intranasal
Russian label (Semax 0.1%): cognitive disorders, 200-2,000 mcg per dose label outside the US · 2025 · LP-No(009449)-(RG-RU)	Adults with cognitive impairment from cerebrovascular disease, dyscirculatory encephalopathy or TIA	200 mcg 4 times daily 10-14 days; course may be repeated Range 200-2,000 mcg per dose (3-30 mcg/kg), 800-8,000 mcg/day; 2-3 drops of 0.1% solution per nostril (50 mcg per drop). Other label regimens: 1,400-3,500 mcg three times daily for 3-5 days after brain injury or neurosurgery; 400-900 mcg/day for 3-5 days (adaptation, mental fatigue); 200-400 mcg/day for 30 days in children 7 years and older with minimal brain dysfunction.	intranasal
Clinical study (Zh Nevrol Psikhiatr 2018): 2,000 mcg intranasally three times daily after ischemic stroke human pilot study · 2018 · PMID:29798983	Adults in early (about 89 days) or late (about 214 days) rehabilitation after ischemic stroke (n = 110 across semax and no-semax subgroups)	2000 mcg three times daily two 10-day courses 20 days apart 1% Semax, 2 drops in each nostril three times a day (6,000 mcg/day). The abstract gives the daily dose; the full text (DOI 10.17116/jnevro20181183261-68) gives the drops and route. Controlled clinical study; phase not stated.	intranasal

Sources checked Nov 4, 2026.

Semax 10mg in 2 mL

amount to syringe units

Semax 10 mg 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 Semax vial size on sale

reconstitution chart

Concentration and amount per 10 units for Semax vial sizes and water volumes
vial	1 mL water	2 mL water	3 mL water	5 mL water
5 mg	5 mg/mL 10 units = 0.5 mg	2.5 mg/mL 10 units = 0.25 mg	1.667 mg/mL 10 units = 0.167 mg	1 mg/mL 10 units = 0.1 mg
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
30 mg	30 mg/mL 10 units = 3 mg	15 mg/mL 10 units = 1.5 mg	10 mg/mL 10 units = 1 mg	6 mg/mL 10 units = 0.6 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 Semax 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

Semax calculator questions

How much bacteriostatic water do I add to Semax 10mg?

Any volume the vial holds; 2 mL gives 5 mg/mL, so 10 units on a U-100 syringe holds 500 mcg. More water makes each draw read more units. The table below shows 1–5 mL for every Semax vial size on sale.

What changes the calculated concentration?

Only two inputs: the amount of Semax in the vial and the water added. 10mg in 2 mL is 5 mg/mL; twice the water halves it, and the amount per draw then reads twice the units. A lot certificate's measured content replaces the label: LA Peptides's 10mg lot 1818 measured 12.02 mg, which in 2 mL is 6.01 mg/mL. HPLC purity is a share of peak area, not a measured mass, so it is shown only as an estimate.

What doses of Semax were used in research?

Registered in Russia (Peptogen) as 0.1% and 1% nasal drops; labels give 200-2,000 mcg per dose for cognitive disorders and 2,000-4,000 mcg per dose for acute ischemic stroke. The table on this page lists 3 sources with amounts, schedules and links.

What does Semax cost per mg?

The lowest current US price is $75.00 for 30mg at Amino USA (about $2.50 per mg, checked 2026-11-06). The calculator turns any vial price into cost per draw.

How much Semax is really in the vial?

Lot certificates on file report measured content: for example LA Peptides's 10mg lot 1818 measured 12.02 mg at 99.87% purity. Use the certificate correction to calculate from the measured amount.

more calculators

Volume and concentration arithmetic for laboratory reconstitution; not medical advice. API: /api/calc. Syringe scales: 0.3 mL U-100, 0.5 mL U-100, 1 mL U-100, 0.5 mL U-40, 1 mL U-40, 1 mL syringe, 3 mL syringe.