HCG 2500IU — Human Chorionic Gonadotropin by Dragon Pharma
The HCG 2500IU vial contains the same pharmaceutical compound as the HCG 5000IU — Human Chorionic Gonadotropin purified from pregnant women's urine, reconstituted as an LH-mimetic injectable. At half the IU content, the 2500IU vial is sized specifically for shorter cycles, lower-dose maintenance protocols, and users whose total HCG requirement across a cycle or PCT phase is better matched to the smaller vial. For complete background on HCG's mechanism, origin, Leydig cell dynamics, and protocol debates, see the HCG 5000IU page.
Also searched as: HCG 2500IU, HCG 2500 Pregnyl, Human Chorionic Gonadotropin, HCG small vial, Dragon Pharma HCG.
2500IU vs 5000IU — Choosing the Right Vial
The choice is straightforward — it comes down to total IU needed across the intended protocol period:
| Protocol | Dose | Frequency | 2500IU Vial Duration | 5000IU Vial Duration |
|---|---|---|---|---|
| During-cycle maintenance | 250 IU | Every 3–4 days (~twice weekly) | ~5 weeks | ~10 weeks |
| During-cycle maintenance | 500 IU | Twice weekly | ~2.5 weeks | ~5 weeks |
| Pre-PCT blast | 1,000 IU | Daily × 5 days | ½ vial per 5-day blast | 1 vial per 5-day blast |
| Pre-PCT blast | 2,000 IU | Daily × 5 days | 1 vial per 5-day blast | ½ vial used per blast |
The 2500IU vial is the natural fit for: a single 5-day pre-PCT blast at 500IU/day (using the full vial exactly); a short 8-10 week cycle where during-cycle maintenance at 250IU every 3-4 days consumes approximately one 2500IU vial over 5 weeks; or a user who prefers to open a fresh vial every 4 weeks rather than use a reconstituted 5000IU vial over 8+ weeks. Reconstituted HCG is stable refrigerated for 28-30 days — for users who won't use 5000IU within that window, the 2500IU vial reduces waste.
Reconstitution — Matching Volume to Dose
Reconstitution volume determines dose measurement precision:
- Add 2.5ml bacteriostatic water → 1,000 IU/ml → 0.25ml per 250IU dose (on U-100 insulin syringe: 25 units)
- Add 1ml bacteriostatic water → 2,500 IU/ml → 0.1ml per 250IU dose (10 units on U-100 syringe)
- Add 5ml bacteriostatic water → 500 IU/ml → 0.5ml per 250IU dose — easier to measure very small doses
For the standard 250IU during-cycle dose, 2.5ml reconstitution gives the most practical measurement — 0.25ml is easily marked on a standard insulin syringe. Reconstitute with bacteriostatic water and store refrigerated at 2-8°C for up to 28-30 days. Never freeze.
Related Products
- HCG 5000IU — larger vial for longer cycles or higher-dose protocols; full mechanism and protocol guide
- Clomid — SERM for PCT, used after HCG pre-PCT blast or alongside gradual HPG recovery
- Nolvadex — SERM alternative or combination for PCT
- HMG 150IU — adds FSH component for spermatogenesis when fertility restoration is required alongside testosterone recovery
"The HCG 2500IU vial is matched to a single pre-PCT blast cycle or 5 weeks of 250IU twice-weekly during-cycle maintenance — the natural choice when the 5000IU vial exceeds what a single reconstituted vial will use within its 28-day stability window."
Storage and Handling
Store lyophilised HCG at room temperature or refrigerated. After reconstitution with bacteriostatic water, store at 2-8°C and use within 28-30 days. Never freeze reconstituted HCG.
