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Specimen Atlas of Research Peptides81 plates · MIT
Side-by-side · Research reference

DSIPvsHCG

Side-by-side comparison across mechanism, dosage, evidence, side effects, administration, and stack synergies. Citations on every claim where available.

AHuman-MechanisticAUTO-DRAFTED8/36 cited
BFDA-ApprovedHUMAN-REVIEWED12/52 cited
DSIP
Sleep modulator · Anti-stress
100–200 mcgPer doseSchneider 1986
HumanMechanisticSchneider 1986
HoursHalf-life (est)
SQ · Pre-sleep · Daily during cycle
HCG
Glycoprotein Hormone · LH Mimetic
2,000 IUTypical dose (2×/wk)Konsam 2026Zachariou 2026
70–90%Sperm induction rateHuijben 2026Zachariou 2026
12–24 moTime to sperm appearanceHuijben 2026Nariyoshi 2025
IM or SQ · 2–3×/week

01Mechanism of Action

Parameter
DSIP
HCG
Primary target
Multiple — modulates HPA axis + thalamic delta-wave generation (proposed)Schneider 1986
LH receptors on testicular Leydig cellsSchröder-Lange 2025
Pathway
Reduced cortisol/ACTH + enhanced delta-wave EEG activity → improved sleep onset + depthSchneider 1986
hCG → Leydig cell LH receptor → Intracellular cAMP → Steroidogenesis pathway activation → Testosterone synthesis
Downstream effect
Faster sleep onset, increased delta sleep, reduced stress response, possible anxiolytic effectSchneider 1986
Elevated intratesticular testosterone, restored spermatogenesis, virilization, secondary sex characteristic developmentKonsam 2026Zachariou 2026
Feedback intact?
No — exogenous hCG bypasses hypothalamic-pituitary axis; endogenous LH remains suppressed
Origin
Endogenous peptide first isolated from rabbit blood during delta sleep; synthesised exogenouslySchneider 1986
Heterodimeric glycoprotein (alpha subunit shared with LH/FSH/TSH; beta subunit confers specificity). Available as urinary-derived or recombinant formulations.
Antibody development
Rare with recombinant; possible with urinary-derived formulations

02Dosage Protocols

Parameter
DSIP
HCG
Standard dose
100–200 mcg SQ pre-sleepSchneider 1986
Frequency
Once daily, pre-sleep
Lower / starter dose
50 mcg pre-sleep
Evidence basis
Human-mechanistic + early clinicalSchneider 1986
RCT / Meta-analysis / FDA-approvedKonsam 2026Huijben 2026
Duration
8–12 weeks per cycle
Reconstitution
Bacteriostatic water
Timing
30–60 min pre-sleep
Half-life
Short plasma; CNS effects last hours
Hypogonadotropic hypogonadism (monotherapy)
2,000 IU IM/SQ 2–3×/weekKonsam 2026Zachariou 2026
Titrate to normalize testosterone (300–1,000 ng/dL) or achieve target AMH ~7.4 ng/mL.
Combined therapy (hCG + FSH)
hCG 2,000 IU 2×/wk + rFSH 75 IU 3×/wkKonsam 2026Nariyoshi 2025
Preferred for azoospermia; FSH added after initial hCG phase or from outset.
Triple therapy (experimental)
hCG 2,000 IU 2×/wk + rFSH 75 IU 3×/wk + testosterone 100 mg IM q2wkKonsam 2026
May accelerate virilization; reduces hCG requirements (~30% lower cumulative dose vs monotherapy).
Cryptorchidism (pediatric)
500–4,000 IU IM 2–3×/week for 3–6 weeks
Duration to sperm appearance
12–24 months (median ~18 mo)Huijben 2026Zachariou 2026
Congenital HH may require longer treatment; acquired HH responds faster.
Route
Intramuscular or subcutaneousKonsam 2026
Monitoring
Serum testosterone, semen analysis q3–6mo, testicular ultrasound
Thickened seminiferous tubules (>300 μm) on ultrasound predict imminent sperm appearance.Nariyoshi 2025

04Side Effects & Safety

Parameter
DSIP
HCG
Injection site reaction
Mild irritation
Pain, erythema (mild, transient)
Drowsiness
Expected effect (intentional)
Vivid dreams
Anecdotally reported
Long-term safety
Limited modern RCT data
Pregnancy / OB
Avoid
Gynecomastia
Aromatization of elevated testosterone to estradiol; dose-dependent
Testicular discomfort / Edema
Rapid testicular growth in hypogonadal males; usually self-limiting
Polycythemia
Elevated hematocrit from supraphysiological testosterone; monitor CBC
Mood / Libido changes
Variable; usually positive with normalization of testosterone
Acne / Oily skin
Androgen-mediated; dose-dependent
Prostate concerns
Monitor PSA in older males; hCG restores physiological testosterone (not supraphysiological)
Antibody formation
Rare with recombinant; possible with urinary-derived
Absolute Contraindications
DSIP
  • ·Pregnancy / breastfeeding
  • ·Concurrent CNS-depressant therapy without supervision
HCG
  • ·Androgen-dependent malignancy (prostate, breast cancer)
  • ·Hypersensitivity to hCG or excipients
  • ·Precocious puberty
Relative Contraindications
DSIP
  • ·Severe sleep apnoea (untreated)
  • ·Concurrent benzodiazepine / opioid use
HCG
  • ·Untreated obstructive sleep apnea
  • ·Severe cardiovascular disease (polycythemia risk)
  • ·History of thromboembolism

05Administration Protocol

Parameter
DSIP
HCG
1. Reconstitution
Add 1–2 mL bacteriostatic water to vial.
Add sterile water or bacteriostatic water per manufacturer instructions. Typically 1–2 mL per 5,000–10,000 IU vial. Roll gently — do not shake. Solution should be clear.
2. Injection site
SQ — abdomen. Rotate sites.
Intramuscular: ventrogluteal, vastus lateralis, or deltoid. Subcutaneous: abdomen, avoiding navel (2-inch radius). Rotate sites to prevent lipohypertrophy.
3. Timing
30–60 min pre-sleep.
Administer 2–3 times per week. Consistent weekly schedule recommended (e.g., Monday/Thursday or Monday/Wednesday/Friday).
4. Storage
Lyophilised: room temp. Reconstituted: refrigerate ≤30 days.
Lyophilized: room temperature, light-protected. Reconstituted: refrigerate 2–8 °C. Bacteriostatic water extends shelf life to ~30 days; sterile water use within 72 hours.
5. Needle
29–31G insulin syringe.
IM: 21–23G, 1–1.5 inch. SQ: 25–27G, 5/8 inch. Inject slowly (30–60 seconds for IM).