How long does reconstituted BPC-157 last?

Reconstituted BPC-157 is stable for approximately 30 days when refrigerated at 2-8 degrees Celsius in bacteriostatic water. Lyophilized BPC-157 powder is stable for 24 months frozen at -20 degrees Celsius or 12 months refrigerated. Reconstituted peptide can be frozen in single-use aliquots to extend stability 3-6 months.

BPC-157 Guide Last updated: May 23, 2026 Reading time: 9 min Reviewed for accuracy by the Bio Apex protocols team

BPC-157 dosage calculator & reconstitution guide

Q: What is the standard BPC-157 dose?

The standard BPC-157 research dose is 200 to 500 mcg per dose, administered 1 to 2 times daily. The most common protocol is 250 mcg twice daily (500 mcg/day total) for a 4-8 week cycle. Injury-focused protocols can go up to 500 mcg twice daily (1,000 mcg/day).

Q: How do I reconstitute BPC-157?

Wipe both vial stoppers with alcohol, draw 2 mL of bacteriostatic water with a 3 mL mixing syringe, slowly inject the water down the inside wall of the BPC-157 vial (not directly onto the powder), swirl gently for 20-30 seconds until fully dissolved, inspect that the solution is clear and colorless, then label with the date and refrigerate at 2-8 degrees Celsius. A 10 mg vial with 2 mL water yields 5 mg/mL concentration.

Q: How much bacteriostatic water do I add to a BPC-157 vial?

Most commonly 2 mL per 10 mg vial, giving a 5 mg/mL concentration. With this mix a 250 mcg dose equals exactly 5 units on a 0.5 mL insulin syringe. Other common ratios: 10 mg / 1 mL = 10 mg/mL (2.5 units per 250 mcg), 10 mg / 3 mL = 3.33 mg/mL (7.5 units per 250 mcg), or 5 mg / 2 mL = 2.5 mg/mL (10 units per 250 mcg).

Q: Where do I inject BPC-157?

BPC-157 is most commonly injected subcutaneously (sub-Q) with a 29-31 gauge insulin needle into the fatty layer just under the skin of the abdomen, thigh, or directly near an injury site. Intramuscular injection near the injury site is used for localized tendon and ligament injuries. Oral administration is studied for gut-focused protocols since BPC-157 is stable in stomach acid.

Q: How long should I cycle BPC-157?

Most BPC-157 research protocols run 4-8 weeks on, followed by a 2-4 week off period. The off period is precautionary to reset receptor sensitivity. Shorter 4-week cycles are common for general recovery; longer 8-week cycles are used for active soft-tissue injury rehab.

Q: Can I stack BPC-157 with TB-500?

Yes. BPC-157 plus TB-500 (Thymosin Beta-4) is the most common healing stack in research protocols. The two work through complementary mechanisms - BPC-157 supports angiogenesis and tendon/ligament repair while TB-500 promotes cell migration and reduces inflammation. A typical stack is 250 mcg BPC-157 twice daily plus 2.5 mg TB-500 twice weekly for 4-6 weeks.

TL;DR

A typical BPC-157 research protocol is 250–500 mcg per dose, 1–2 times daily, for a 4–8 week cycle. To reconstitute a 10 mg vial with 2 mL of bacteriostatic water you get a 5 mg/mL concentration — a 250 mcg dose equals 0.05 mL or 5 units on a 0.5 mL insulin syringe.

Quick math: mg ÷ mL = concentration. Dose mcg ÷ 1,000 ÷ concentration = mL. mL × 100 = insulin units.

BPC-157

BPC-157 Dosage Calculator

Pre-configured for Body Protection Compound 157. Tap a common protocol or enter your own.

Quick protocols

Reconstitution

BPC-157 in vial

Bacteriostatic water added

Dosage

Desired dose

Frequency Syringe size

Results

Concentration 5 mg/mL 5,000 mcg/mL

Draw per dose 5 units 0.05 mL · 250 mcg

Daily total 500 mcg / day 2 doses × 250 mcg

Vial lasts 20 days 40 doses · 10 mg total

Note: BPC-157 is most stable at 2–8°C for ~30 days after reconstitution. Light-sensitive — keep in the original vial.

BPC-157 quick reference

Typical dose range 200–500 mcgper dose, research protocols

Common frequency 1–2× dailysplit for steady levels

Half-life ~4 hourssubcutaneous

Typical cycle 4–8 weeksthen 2–4 week off period

Injection site Sub-Q near injuryor rotating abdomen sites

Stability after mixing ~30 daysrefrigerated, 2–8°C

What is BPC-157?

BPC-157 (Body Protection Compound 157) is a 15-amino-acid synthetic peptide derived from a protective protein found in human gastric juice. It's studied extensively in animal research for its effects on soft-tissue healing — tendons, ligaments, muscle, gut lining, and blood vessels. The peptide is stable in stomach acid (uncommon for peptides), which makes both oral and subcutaneous routes viable in research settings.

What is the standard BPC-157 dose?

The most commonly cited research dose ranges from 200 to 500 mcg per dose, administered 1 to 2 times daily. Many protocols use 250 mcg twice daily (500 mcg/day total) as the standard, with 500 mcg twice daily (1,000 mcg/day) used for more severe injury protocols.

Maintenance / mild

250 mcg

Once daily · 4 week cycle · general recovery support

Standard

250 mcg × 2

Twice daily · 4–6 week cycle · most common protocol

Injury / aggressive

500 mcg × 2

Twice daily · 6–8 week cycle · acute soft-tissue injury

Gut-focused (oral)

500 mcg

Once daily oral · 4–8 weeks · GI lining support

How do I reconstitute BPC-157?

BPC-157 ships as a lyophilized (freeze-dried) white powder. You mix it with bacteriostatic water (0.9% benzyl alcohol) before use. The amount of water you add determines your concentration — and how easy your doses are to measure.

Wipe both vial stoppers with alcohol
Use a fresh 70% isopropyl prep pad on the rubber septum of both the BPC-157 vial and the bacteriostatic water vial. Air-dry 10 seconds.
Draw your bacteriostatic water
Use a 3 mL syringe with a drawing needle to pull the calculated volume (2 mL is the most common starting point — use the calculator above).
Inject down the inside wall of the vial
Angle the needle so water trickles down the glass — not directly onto the powder. Direct stream causes foaming and can damage BPC-157.
Swirl gently for 20–30 seconds
Roll the vial between your palms until fully dissolved. Never shake — agitation denatures BPC-157.
Inspect the solution
It should be completely clear and colorless. Any cloudiness, particles, or yellow tint means the peptide is degraded or contaminated — discard.
Label and refrigerate immediately
Write the reconstitution date and concentration on the vial. Store at 2–8°C (36–46°F). Use within 30 days.

How much bacteriostatic water do I add to a BPC-157 vial?

The answer depends on the vial size, your typical dose, and which insulin syringe you use. Here are the most common combinations:

Vial	BAC water	Concentration	250 mcg =	500 mcg =
5 mg	1 mL	5 mg/mL	5 units	10 units
5 mg	2 mL	2.5 mg/mL	10 units	20 units
5 mg	2.5 mL	2 mg/mL	12.5 units	25 units
10 mg	1 mL	10 mg/mL	2.5 units	5 units
10 mg	2 mL	5 mg/mL	5 units	10 units
10 mg	3 mL	3.33 mg/mL	7.5 units	15 units
10 mg	5 mL	2 mg/mL	12.5 units	25 units

Sweet spot: The 10 mg / 2 mL mix (5 mg/mL) is the most popular BPC-157 reconstitution because a 250 mcg dose lands exactly on 5 units — easy to draw, easy to remember.

Where do I inject BPC-157?

BPC-157 has two main administration routes in research:

Route	How	Best for
Subcutaneous (Sub-Q)	29–31 G insulin needle into the fatty layer just under the skin — abdomen, thigh, or directly near the injury site	Systemic effects, soft-tissue healing
Intramuscular (IM) near injury	Same needle, deeper injection into the muscle close to the injured area	Localized tendon, ligament, or muscle injuries
Oral	Drawn into a syringe and swallowed (no needle); BPC-157 is stable in stomach acid	Gut healing, GI inflammation, leaky gut research

For localized injuries (tendinopathies, ligament strains), researchers commonly inject sub-Q as close to the injury site as practical to maximize local concentration. Rotation between sides or sites prevents tissue irritation over a long cycle.

How long should I cycle BPC-157?

Most published research protocols run 4–8 weeks on, followed by a 2–4 week off period. The off period is precautionary — to reset receptor sensitivity and assess whether continued use is needed. Many users run shorter 4-week cycles for general recovery and longer 8-week cycles for active soft-tissue injury rehab.

Cycle length is debated. Some research protocols run BPC-157 continuously for 12+ weeks in animal models without observed adverse effects. There is currently no human FDA-approved dosing guidance — the 4–8 week / 2–4 week cycle framework is a conservative convention adopted by the research community.

Can I stack BPC-157 with other peptides?

The most common BPC-157 stack in healing protocols is with TB-500 (Thymosin Beta-4). The two work through complementary mechanisms — BPC-157 supports angiogenesis and tendon/ligament repair, while TB-500 promotes cell migration and reduces inflammation.

Stack	Typical doses	Use case
BPC-157 + TB-500	250 mcg BPC-157 2×/day + 2.5 mg TB-500 2×/week	Acute injury rehab
BPC-157 + GHK-Cu	250 mcg BPC-157 2×/day + 1–2 mg GHK-Cu daily	Skin, hair, anti-aging research
BPC-157 + Ipamorelin/CJC-1295	250 mcg BPC-157 2×/day + 200–300 mcg combo at night	Growth-hormone-supported recovery

Each peptide is drawn into its own syringe and injected separately (or combined in one syringe immediately before injection — never mixed in the vial for storage).

How should I store reconstituted BPC-157?

Lyophilized (powder): Stable for 24 months at −20°C, 12 months refrigerated at 2–8°C
Reconstituted (in BAC water): ~30 days refrigerated at 2–8°C
Frozen aliquots: 3–6 months at −20°C in single-use vials (avoid freeze-thaw cycles)

BPC-157 is light-sensitive — keep in the original amber vial or wrap in foil. Avoid temperature swings; don't leave on the counter while drawing your dose. Pull from the fridge, draw, and return immediately.

What are common BPC-157 mistakes to avoid?

Shaking the vial — denatures the peptide. Always swirl.
Using sterile water instead of bacteriostatic — no preservative means contamination within 1–2 days.
Mismatching syringe size to dose — a 1 mL syringe makes a 2.5-unit dose nearly impossible to measure accurately. Use 0.3 or 0.5 mL syringes for BPC-157.
Storing at room temperature — accelerates degradation 5–10× vs refrigerated.
Not labeling the vial — within a week you won't remember the concentration or reconstitution date.
Running cycles back-to-back without breaks — the conventional 4–8 weeks on / 2–4 weeks off framework exists for a reason.

Frequently asked questions about BPC-157

What is the best BPC-157 dose for tendon injuries?

Most research protocols for tendon and ligament healing use 250–500 mcg twice daily for 4–8 weeks. For localized injuries, injection sub-Q as close to the affected tendon as practical is the standard approach. The 10 mg vial reconstituted with 2 mL of bacteriostatic water (5 mg/mL) lands a 250 mcg dose on exactly 5 insulin units, making it the most popular setup.

How long does BPC-157 take to work?

Anecdotal reports in research settings commonly describe noticeable changes within 1–2 weeks, with more substantial soft-tissue effects accumulating over 4–6 weeks. Acute inflammation responses can shift within days. Individual response varies widely and depends on the injury type, dose, frequency, and route.

Should I take BPC-157 sub-Q or orally?

Both routes are studied. Sub-Q is the standard choice for soft-tissue (tendon, muscle, ligament) and systemic effects because it delivers the peptide directly into circulation. Oral is preferred for gut-focused research — BPC-157 is unusual in being stable in stomach acid, so the peptide can act locally on the GI lining when swallowed. Some protocols combine both routes.

Can I keep BPC-157 at room temperature?

Lyophilized BPC-157 is stable for short periods at room temperature, but once reconstituted it must be refrigerated. At room temperature reconstituted BPC-157 degrades 5–10× faster than refrigerated. Brief exposure (e.g., drawing your dose) is fine, but don't leave the vial out for extended periods.

What are the side effects of BPC-157?

Animal studies have shown a remarkably clean safety profile with no observed organ toxicity at research doses, even at long-term administration. Anecdotal user reports occasionally mention mild injection-site discomfort, transient nausea, or short-lived dizziness. BPC-157 has not been approved by the FDA for human use, and there are no large-scale human clinical trials of safety or efficacy.

Is BPC-157 better with TB-500?

The BPC-157 + TB-500 stack is the most popular healing combination in research protocols. They work through complementary mechanisms — BPC-157 supports angiogenesis and tendon repair, while TB-500 (Thymosin Beta-4) supports cell migration and reduces inflammation. Typical stacking protocol: 250 mcg BPC-157 twice daily + 2.5 mg TB-500 twice weekly for 4–6 weeks.

What's the difference between BPC-157 acetate and arginate salt?

BPC-157 is most commonly sold as the acetate salt — well-studied, water-soluble, and the form used in most published research. BPC-157 arginate is a newer salt form claimed to be more stable in the bloodstream, particularly for oral administration, though comparative research is limited. Both reconstitute and dose identically.