Testosterone Cypionate protocol

Standard

TRT

0.2–0.3 mL ×2

100–150 mg/week · 2×/week (split)

Replacement dosing. Split doses smooth levels and estrogen.

Cycle (enhancement)

0.6–1.2 mL ×2

300–600 mg/week · 2×/week

Supraphysiologic, risk rises with dose. 12–16 weeks typical, then PCT.

Phase	How often	Dose	Units	Notes
TRT	2×/week (split)	100–150 mg/week	0.2–0.3 mL ×2	Replacement dosing. Split doses smooth levels and estrogen.
Cycle (enhancement)	2×/week	300–600 mg/week	0.6–1.2 mL ×2	Supraphysiologic, risk rises with dose. 12–16 weeks typical, then PCT.

Volume column is at 250 mg/mL. Estrogen: aromatizes, an aromatase inhibitor may be needed at higher doses (don’t crush estrogen to zero). Note: controlled substance; HPTA suppression means you need a plan to recover or stay on.

Cycle & timing

Cycle: TRT is continuous (lifelong, with monitoring); enhancement cycles run 12–16 weeks then either PCT (restart) or cruise.

Where: IM (glute/quad/delt) or SubQ. Rotate. Sterile technique.

What to expect

Improved libido, energy, muscle, and recovery. Suppression of natural production. Effects and side effects scale with dose.

How much to buy

For 10mL → ~16 weeks at TRT (150 mg/wk) | ~5 weeks at 500 mg/wk cycle:

~16 weeks at TRT (150 mg/wk)

× 10mL vials

~5 weeks at 500 mg/wk cycle

× 10mL vials

Men & women

Men: Standard TRT/cycle compound. Suppresses natural production & sperm; aromatizes to estrogen. Monitor hematocrit, estradiol, PSA, lipids; add hCG to preserve fertility.

Women: Testosterone is the primary male androgen; women need only trace amounts. Male-range doses cause virilization, voice deepening, facial/body hair, clitoral enlargement, male-pattern balding; much of it permanent. Not appropriate at the doses on this page.

Storage

Room temp, dark. Oil may cloud if cold, warm to clear. Single-use draws.

Don't use if: Prostate cancer or breast cancer in men · Polycythemia / high hematocrit · Untreated severe sleep apnea, severe uncontrolled heart failure · Pregnancy (teratogenic exposure risk to a partner)

Stop if you notice

Hematocrit >54% (or per clinician)
Chest pain, severe headache, vision/neurologic changes (clot/stroke signs)
New breast lumps, severe mood disturbance
Rising PSA / prostate concerns

Side effects

Acne, oily skin, hair loss (if predisposed), water retention, estrogen rise (gyno), testicular shrinkage, mood changes, elevated hematocrit, lipid worsening.

Drug interactions

Anticoagulants: testosterone can potentiate warfarin, monitor INR. Insulin/antidiabetics: improved insulin sensitivity may lower needs. Other 17-alpha-alkylated orals: additive hepatic/lipid strain.

Labs

Baseline + periodic: total/free testosterone, estradiol, CBC (hematocrit), lipid panel, PSA (age-appropriate), liver enzymes. Blood pressure each visit. Out of range? Hematocrit >54% = blood too thick (donate or hold); high estradiol = manage it; a rising PSA = get the prostate checked.

What these labs mean →

Warnings

HPTA suppression, testicular atrophy and infertility; recovery not guaranteed after long/high use. High red-blood-cell count (thick blood), clot/stroke risk; may need donation/dose reduction. Adverse lipid changes (HDL drop) and cardiovascular risk. Estrogen-related gynecomastia / water retention; mood and aggression changes. Worsens benign prostate symptoms; accelerates male-pattern hair loss if predisposed.

Patient education

This is a controlled anabolic steroid, not a peptide; manage it with bloodwork. It shuts down your own production, have a plan (PCT or stay-on). Watch hematocrit, estrogen, lipids, and blood pressure. Higher doses = proportionally higher risk; don’t crush estrogen to zero.

These apply on top of the universal safety rules.

Pairs well with

HCG

preserve testicular function/fertility on cycle

HCG

An AI

if estrogen climbs

Base of most stacks (e.g. with EQ)

Equipoise (Boldenone)

Avoid with

Prostate or breast cancer

High red-blood-cell count (high hematocrit)

Untreated sleep apnea

Pregnancy exposure (partner)

Uncontrolled heart disease

Can Testosterone Cypionate + HCG share a syringe?

Oil and water don't mix. An oil-based steroid won't dissolve into a water-based peptide. You'd inject droplets, not a solution.

What it does

Controlled substance.

Testosterone cypionate is esterified testosterone in oil for IM/SubQ injection (~8-day half-life). It restores or raises androgen levels, building muscle, strength, libido, and well-being; while suppressing the body’s own production (HPTA) and aromatizing to estrogen. TRT replaces a deficiency; supraphysiologic “cycle” doses add risk proportional to dose.

Presentation

Vial	Form	Concentration	Note
10 mL	Oil solution (no reconstitution)	250 mg/mL	0.1 mL = 25 mg. Draw with a larger-gauge needle, inject with a smaller one.

References

rxlist dailymed researchdosing

From the guide, page 95.