Erythropoietin (EPO)
FDA APPROVED
Fda Approved
Metabolic
Erythropoietin (EPO)
0
Amino acids
Molecular weight
Peptide
Type
Erythropoietin (EPO) is a 165-amino acid glycoprotein hormone (not a simple peptide) produced primarily by the kidneys in response to hypoxia; it regulates red blood cell production by stimulating erythroid progenitor differentiation in bone marrow. The glycosylated form has a molecular weight of approximately 30 kDa, while the protein backbone alone is ~18.4 kDa. Recombinant human EPO (rhEPO) is FDA-approved for anemia associated with chronic kidney disease, chemotherapy, and HIV therapy, and is prohibited by WADA due to misuse as an endurance performance-enhancing agent.
Top researched benefits
Overview of Erythropoietin (EPO)
EPO binds to the homodimeric erythropoietin receptor (EPOR) on erythroid progenitor cells, activating JAK2 kinase and downstream STAT5, PI3K, and MAPK signaling pathways. This promotes proliferation and terminal differentiation of red blood cell precursors and protects them from apoptosis, increasing circulating erythrocyte mass and oxygen-carrying capacity.
medical indications fdaapproved
- Primary FDA-approved indication for anemia secondary to chronic kidney disease.
- FDA-approved for treating anemia in cancer patients receiving chemotherapy.
- Used to reduce need for blood transfusions in certain surgical settings.
performance banned in sports
- Increases oxygen delivery to muscles, improving endurance capacity. Banned by WADA.
- May accelerate adaptation to high altitude by increasing red blood cell mass.
Typical Dose
50–100 IU/kg per injection (IV half-life ~6 hours; SC half-life ~24 hours)
Frequency
3 times per week
Cycle Duration
Ongoing with dose titration based on hemoglobin response; typical clinical assessment at 12 weeks
Storage
Clinical liquid formulations: refrigerate at 2–8°C; do not freeze; remove from refrigerator 30 minutes before injection. Lyophilized research-grade EPO: store below -18°C desiccated long-term; reconstitute in sterile water and store at 2–8°C for up to 7 days or re-freeze at -20°C in single-use aliquots; minimize freeze-thaw cycles.
No visual available
Due to this peptide having no amino acids, there is no molecular chain to display.
Chemical Makeup
Key benefits
Corrects anemia in chronic kidney disease patients by directly stimulating bone marrow erythroid progenitor proliferation, reducing dependence on blood transfusions
Alleviates chemotherapy-induced anemia in cancer patients, raising hemoglobin levels and improving quality of life during treatment
Increases maximal aerobic capacity (VO2 max) by up to 9% in healthy individuals through elevated red blood cell mass and enhanced oxygen delivery to working muscle
Improves sustained endurance performance in controlled studies by increasing total hemoglobin mass and oxygen transport capacity over multi-week administration
Community interest
This peptide is still gaining traction in the community.
Erythropoiesis Stimulator | Anemia & Performance
This overview is informational and based on aggregated descriptions from studies and user reports.
Was it helpful?YesNoErythropoietin (EPO) Molecular Information
View the scientifc details of Erythropoietin (EPO).
Molecular Weight
18396.1DaChain Length
0Amino AcidsType
PeptideErythropoietin (EPO) Protocols
Subcutaneous injection is the preferred route for Erythropoietin (EPO) in non-dialysis CKD, chemotherapy-related anemia, HIV-associated anemia, and perioperative settings, offering a sustained half-life of approximately 24 hours that allows lower total weekly doses compared to IV. Rotate injection sites among the outer upper arm, abdomen, front of thigh, and upper outer buttocks — no single site provides meaningfully superior bioavailability.
| Goal | Dosage | Frequency | Route |
|---|---|---|---|
| Raise hemoglobin to 10–11 g/dL in non-dialysis CKD or dialysis patients; dose expressed as IU per kg body weight | 50 | 3 week range | SubQ — dose is 50 IU/kg per injection |
| Raise hemoglobin to 10–11 g/dL in non-dialysis CKD; dose expressed as IU per kg body weight | 100 | 3 week range | SubQ — dose is 100 IU/kg per injection |
| Maintain hemoglobin above 10 g/dL during active chemotherapy to reduce RBC transfusion need; dose is a fixed flat amount not weight-based | 40000 | 1 week range | SubQ — dose is 40,000 IU flat (not per kg) |
| Maintain hemoglobin above 10 g/dL during active chemotherapy with more frequent dosing; dose expressed as IU per kg body weight | 150 | 3 week range | SubQ — dose is 150 IU/kg per injection |
| Correct anemia in zidovudine-treated HIV patients with endogenous EPO levels below 500 IU/L; dose expressed as IU per kg body weight | 100 | 3 week range | SubQ — dose is 100 IU/kg per injection |
| Reduce allogeneic blood transfusion requirement in elective noncardiac surgery; 10 days pre-op, day of surgery, and 4 days post-op; dose expressed as IU per kg body weight | 300 | 1 day range | SubQ — dose is 300 IU/kg per injection; DVT prophylaxis required concurrently |
Reconstitution Instructions
Materials needed:
Steps to reconstitute
- Confirm current hemoglobin level is below 10 g/dL before initiating or continuing a dose — do not administer if hemoglobin is approaching or exceeding 11 g/dL in CKD patients or 12 g/dL in surgery patients.
- Remove the EPOGEN vial from the refrigerator and allow it to reach room temperature for a few minutes — do not heat or shake the vial.
- Inspect the vial: confirm the solution is clear and colorless, the expiration date has not passed, and the dose strength matches the prescription.
- Wash hands thoroughly with soap and water for at least 20 seconds.
- Remove the colored cap from the vial and wipe the gray rubber stopper with an alcohol wipe; allow to air-dry completely.
- Draw air into the syringe equal to the volume of the prescribed dose.
- Insert the needle into the rubber stopper and inject the air into the vial.
- Invert the vial and slowly withdraw the prescribed dose by pulling back the plunger to the correct marking.
- Tap the syringe gently and push the plunger slightly to expel any air bubbles, then re-verify the dose volume.
- Select an injection site — rotate among outer upper arm, abdomen (avoiding 2 inches around the navel), front of thigh, or upper outer buttocks — avoid areas that are tender, bruised, red, or scarred.
- Clean the selected site with an alcohol wipe and allow to air-dry.
- Pinch a fold of skin and insert the needle at a 45–90 degree angle using a quick dart-like motion, then inject the solution slowly.
- Withdraw the needle and apply gentle pressure with a cotton ball; do not rub the site.
- Dispose of the used syringe and needle immediately in a puncture-proof sharps container — never recap.
- Store unused vials refrigerated at 2–8°C (36–46°F); do not freeze.
Erythropoietin (EPO) Cycle
The Erythropoietin (EPO) Cycle section explains how long a typical cycle lasts and what to expect during each phase. Over time, your body can become less responsive with continuous use.
Taking breaks between cycles may help maintain effectiveness and support better overall results.
- Day 1-3
- Bone marrow stimulation begins
- Week 1-2
- Reticulocyte count increases
- Week 2-4
- Hemoglobin begins rising
- Week 4-12
- Target hemoglobin achieved with proper dosing
Dosing tools
Erythropoietin (EPO) Peptide Dosage Calculator
Calculate peptide doses with our visual syringe guide.
mg
Enter the total amount of peptide in the vial in milligrams (as stated on the label).
The dose you want to inject per administration, in mcg or mg.
1,000 mcg = 1 mg
1 mL
2 mL
3 mL
5 mL
Custom
Volume of bacteriostatic water you add to reconstitute the powder. Use BAC water for preservation.
Injection Results
Based on your vial and dilution inputs.
Erythropoietin (EPO)
SINGLE COMPOUNDVolume per injection
0.05
mL
Concentration
10.00
mg/mL
Doses per vial
20
doses
Total injections per vial
20 injections
How it works
Based on a 10 mg Erythropoietin (EPO) vial diluted with 1 mL of bacteriostatic water, each 500 mcg injection equals 0.05 mL.
1mL / 100 units
5 units
0.050 mL
Reference Guide
Dosing Cycle
- Peptide
- Erythropoietin (EPO)
- Dosing
- 50–100 IU/kg per injection (IV half-life ~6 hours; SC half-life ~24 hours)
- Dosing Frequency
- 3 times per week
- Cycle Duration
- Ongoing with dose titration based on hemoglobin response; typical clinical assessment at 12 weeks
- Storage
- Clinical liquid formulations: refrigerate at 2–8°C; do not freeze; remove from refrigerator 30 minutes before injection. Lyophilized research-grade EPO: store below -18°C desiccated long-term; reconstitute in sterile water and store at 2–8°C for up to 7 days or re-freeze at -20°C in single-use aliquots; minimize freeze-thaw cycles.
Note: Triple agonist; microdose for fewer side effects
Reconstitution Tips
- Use bacteriostatic water (BAC) — contains 0.9% benzyl alcohol for preservation
- Inject water slowly — aim down the vial wall, not directly onto powder
- Never shake — gently swirl or roll the vial until dissolved
- Store properly — refrigerate at 2-8°C after reconstitution
- Use within 28 days — most reconstituted peptides remain stable for about 4 weeks
- Keep sterile — always clean vial tops with alcohol before drawing
Peptide Interactions
Research suggestions of Erythropoietin (EPO) interactions with other common peptides and substances.
Side effects
Contraindications
Uncontrolled hypertension
Pure red cell aplasia history
Hemoglobin >12 g/dL (increased cardiovascular risk)
Active malignancy (relative contraindication)
Stop signs
Severe headache or vision changes
Chest pain or shortness of breath
Signs of blood clots (leg swelling, pain)
Sudden loss of response to EPO
Bad signs
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Frequently asked questions
What is a peptide dosage calculator?
A peptide dosage calculator is a free tool that converts your vial size, bacteriostatic water volume, and target dose into an exact syringe draw volume. Instead of doing the reconstitution math by hand, you enter three inputs and instantly get the concentration of your solution and how many milliliters or syringeunits to draw. This calculator works for single peptide compounds and multi-peptide blends.
How do I calculate peptide dosage from a vial?
To calculate your peptide dose, divide the total peptide content of your vial in micrograms by the volume of bacteriostatic water you added in milliliters. This gives you your solution concentration in mcg/mL. Then divide your target dose by that concentration to get your draw volume. For example, a 5mg (5,000 mcg) vial reconstituted with 2mL of BAC water gives a concentration of 2,500 mcg/mL. A 250 mcg dose would require drawing 0.1mL. This calculator automates all of those steps instantly.
How much Bacteriostatic water should I add to a peptide vial?
Most people add 2mL to 3mL of bacteriostatic water per vial, but the right amount depends on the dose you want to draw and the syringe size you are using. Adding 1mL to a 5mg vial gives you a concentration of 5,000 mcg/mL, making each dose very small in volume. Adding 2mL gives you 2,500 mcg/mL, which is easier to measure on a standard insulin syringe. A general guideline is to choose a volume that puts your typical dose somewhere between 10 and 30 units on a U-100 syringe. Use the calculator above to test different water volumes and find what works for your dose.
How are peptides different from proteins?
Both are made of amino acids, but peptides are much smaller than proteins. Because of their tiny size, peptides can act like tiny messengers in the body, sending specific signals to your cells to tell them exactly what to do.
Erythropoietin (EPO)Research References
Erythropoietin (EPO) is a fda approved compound
Erythropoietin (EPO)
Erythropoietin (EPO) is a fda approved compound
Erythropoietin regulation of red blood cell production
Comprehensive review of EPO's oxygen-sensing mechanism and regulation of RBC production.
n.d.
Erythropoietin Stimulating Agents
FDA-approved indications include CKD anemia and chemotherapy-induced anemia. Risks increase when hemoglobin exceeds 11-12 g/dL.
n.d.
Erythropoiesis-stimulating agents and other methods to enhance oxygen transport
rHuEPO increases O2 supply to muscles and boosts performance in endurance sports.
n.d.
The mechanism of erythropoietin action
EPO promotes survival of erythroid progenitors by protecting from apoptosis.
n.d.
Calculate peptide dosages
Learning how to calculate a peptide dose? Use our beginner-friendly peptide dosage, blend, and accumulation calculators. Enter vial size, reconstitution volume, and target dose to get exact draw volumes instantly. No guesswork, just clear guidance that helps prevent common mistakes.
