Peptide Dosage Calculator
Calculate peptide reconstitution, syringe measurements, and cycle requirements for therapeutic peptides
Calculate Peptide Dosage & Reconstitution
Amount of lyophilized (freeze-dried) peptide in the vial
Volume of bacteriostatic water to reconstitute the peptide
Amount of peptide to inject per day
Length of peptide therapy cycle to calculate total peptide needed
Example: BPC-157 Calculation
Patient Scenario
Patient weight: 78 kg (172 lbs)
Peptide: BPC-157, 5 mg vial
Dosage: 5 mcg/kg body weight
Reconstitution: 1 ml bacteriostatic water
Calculation Steps
1. Daily dose: 5 mcg/kg × 78 kg = 390 mcg
2. Solution concentration: 5000 mcg ÷ 1 ml = 5000 mcg/ml
3. Volume needed: 390 mcg ÷ 5000 mcg/ml = 0.078 ml
4. Syringe units: 0.078 ml × 100 = 7.8 units
Common Peptide Dosages
BPC-157
Body protection compound for healing
AOD 9604
Anti-obesity drug for fat loss
CJC-1295
Growth hormone releasing hormone
Sermorelin
Growth hormone releasing peptide
Hexarelin
Growth hormone secretagogue
ARA-290
Tissue protective peptide
Anamorelin
Ghrelin receptor agonist
Note: Dosages vary by individual needs and medical condition. Always consult healthcare professionals for proper dosing.
Safety Guidelines
Use only sterile bacteriostatic water for reconstitution
Store reconstituted peptides in refrigerator (2-8°C)
Use insulin syringes for accurate small-volume measurements
Follow aseptic technique during preparation and injection
Monitor for allergic reactions and side effects
Never share needles or vials with others
Understanding Peptide Dosage & Reconstitution
What are Peptides?
Peptides are short chains of amino acids that serve as building blocks of proteins. They play crucial roles in various biological processes and are increasingly used in therapeutic applications for conditions ranging from tissue repair to metabolic disorders.
Common Uses
- •Tissue healing and repair (BPC-157, TB-500)
- •Growth hormone enhancement (CJC-1295, Sermorelin)
- •Weight loss and metabolism (AOD 9604, Semaglutide)
- •Anti-aging and longevity protocols
Reconstitution Process
Peptides are typically supplied as lyophilized (freeze-dried) powder that must be reconstituted with bacteriostatic water before injection. The process requires precise calculations to ensure accurate dosing.
Calculation Formula:
Syringe Units = (Water Volume / (Vial Capacity / Dose)) × 100
Volume (ml) = Syringe Units / 100
Important: Always consult with qualified healthcare professionals before starting any peptide therapy. Proper medical supervision is essential for safe and effective treatment.
Frequently Asked Questions
How do I reconstitute peptide powder?
To reconstitute peptides, slowly inject bacteriostatic water down the inside wall of the vial (not directly onto the powder). Allow the water to gently dissolve the peptide powder by rolling or swirling the vial - never shake vigorously. Once fully dissolved, the solution is ready for use. Store in the refrigerator between 2-8°C.
What is the difference between bacteriostatic water and sterile water?
Bacteriostatic water contains 0.9% benzyl alcohol as a preservative, which prevents bacterial growth and allows the reconstituted peptide to remain stable for up to 28 days when refrigerated. Sterile water has no preservative and should be used only for immediate single-dose administration. For multi-dose vials, always use bacteriostatic water.
How long do reconstituted peptides last?
When properly reconstituted with bacteriostatic water and stored in the refrigerator (2-8°C), most peptides remain stable for 2-4 weeks. However, stability varies by peptide type - some like IGF-1 may degrade faster (7-10 days), while others like BPC-157 can last up to 30 days. Always check the manufacturer's recommendations for specific peptides and discard any solution that appears cloudy or discolored.
What size syringe should I use for peptide injections?
Insulin syringes (0.3ml, 0.5ml, or 1ml) with 29-31 gauge needles are ideal for peptide injections. The 1ml insulin syringe is most common as it's marked in 100 units (1 unit = 0.01ml), making it easy to measure small doses accurately. For subcutaneous injections, use needles 5-8mm in length. Always use a new, sterile syringe for each injection.
Where should I inject peptides?
Most therapeutic peptides are administered via subcutaneous injection in areas with adequate subcutaneous fat: abdomen (2 inches away from belly button), upper thighs, back of upper arms, or buttocks. Rotate injection sites to prevent lipohypertrophy (fat buildup) or lipoatrophy (fat loss). Clean the injection site with alcohol and allow it to dry before injecting.
Can I change the amount of bacteriostatic water used?
Yes, you can adjust the volume of bacteriostatic water to make dosing easier, but this changes the concentration and thus the volume you need to inject. Using more water creates a more dilute solution, requiring larger injection volumes. Using less water creates a more concentrated solution with smaller injection volumes. Common volumes are 1ml, 2ml, or 3ml per vial. Just remember to recalculate your dosage accordingly.
What are common side effects of peptide therapy?
Common side effects vary by peptide but may include injection site reactions (redness, swelling), water retention, increased hunger, fatigue, or headaches. Growth hormone-stimulating peptides may cause joint pain or carpal tunnel-like symptoms. Serious side effects are rare but can include allergic reactions. Always start with lower doses and monitor your response. Contact a healthcare provider immediately if you experience severe reactions.
Do I need a prescription for peptides?
In most countries including the USA, therapeutic peptides require a prescription from a licensed healthcare provider. Peptides are regulated substances and should only be obtained through legitimate medical channels. Working with a qualified physician ensures proper dosing, monitoring, and safety. Avoid purchasing peptides from unregulated sources, as quality, purity, and sterility cannot be guaranteed.
How should I store lyophilized (freeze-dried) peptides?
Unopened lyophilized peptide vials should be stored in the freezer at -20°C (-4°F) for long-term storage, or in the refrigerator at 2-8°C (36-46°F) for short-term storage (up to several months). Keep vials away from light and moisture. Once reconstituted, peptides must be refrigerated and used within the stability period (typically 2-4 weeks). Never freeze reconstituted peptides as this can damage the peptide structure.
Can I mix different peptides in the same syringe?
Generally, it's not recommended to mix different peptides in the same syringe unless specifically approved by your healthcare provider. Different peptides may have different pH levels, stability characteristics, or chemical interactions that could reduce effectiveness or cause adverse reactions. If using multiple peptides, inject them separately at different sites or at different times of day unless you have specific medical guidance indicating it's safe to combine them.