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Testosterone (TRT)
⚕️
Testosterone (TRT)
Androgens & SARMs
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Prescription testosterone replacement therapy, injected into muscle and monitored by a clinician.
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Class
Hormone, TRT
Route
Intramuscular
Typical range
100 to 200 mg/week
Frequency
Weekly, often split
Onset
Weeks to months
Educational summary. See Sources & research below for the underlying studies.
What it is
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Testosterone replacement therapy (TRT) restores testosterone to a normal range in people a clinician has diagnosed with low levels. It is a prescribed, monitored medical treatment, not a do-it-yourself protocol.
• For: clinically diagnosed low testosterone, confirmed by bloodwork
• Prescribed and supervised by a licensed clinician
• Goal: return levels to a healthy normal range, not above it
How it works
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It replaces the testosterone the body is not making enough of.
• Testosterone binds androgen receptors throughout the body
• Supports energy, mood, libido, muscle, and bone maintenance
• A clinician tracks blood levels and adjusts the dose
Dosing and mixing
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Reference tiers only. Track the dose you are already taking.
Low
About 80 to 100 mg per week
FOR Gentle replacement, dialed in by bloodwork
BENEFIT A clinician may select this when aiming for the smallest effective amount
Standard
About 100 to 200 mg per week
FOR The common prescribed maintenance range
BENEFIT A clinician-selected tier commonly discussed for prescribed maintenance
Split
The same weekly amount, divided into two injections
FOR Smoother levels with fewer ups and downs
BENEFIT A split schedule clinicians may use when steadier levels are the goal
Schedule: Injected into muscle on a fixed weekly schedule. The exact dose is set by a clinician from bloodwork.
Beginner ramp: Your prescriber sets the starting dose and adjusts only after follow-up labs.
Mixing (reconstitution)
BAC water is bacteriostatic water, the sterile water you mix in.
Testosterone comes pre-mixed in oil, usually 200 mg/mL. A 10 mL vial holds about 2000 mg, so a 100 to 200 mg dose draws to 50 to 100 units on a U-100 syringe.
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Ranges are reference only, not a recommendation. See Sources & research below.
How to take it
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Given as an intramuscular injection (deltoid, glute, ventrogluteal, or vastus lateralis), or as a prescribed gel or pellet.
• Rotate the muscle each time to protect the tissue
• Follow the exact technique your clinician shows you
• Never change the dose yourself, retest and ask first
What to expect
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Weeks 1 to 3
Some notice steadier energy and mood as levels stabilize.
Weeks 3 to 6
Libido and motivation often improve.
Months 2 to 6
Body composition and bone markers may shift with steady levels.
Ongoing
A clinician rechecks bloodwork to keep levels in range.
Side effects
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Commonly reported
• Injection-site soreness
• Acne or oily skin
• Water retention
See a clinician if
• Chest pain or trouble breathing
• Swelling or pain in one leg
• Mood changes that worry you
Storage
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Store exactly as the pharmacy label says.
• Keep the vial at room temperature unless told otherwise
• Keep out of reach of others
• Do not use past the expiry date
Sources & research
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Clinical use
TRT is an established, prescribed treatment for diagnosed low testosterone, monitored by clinicians with regular bloodwork.
Sources are provided for education and are not exhaustive. Where a source names a specific trial or journal it is shown above; always confirm with a licensed clinician.
Educational and research information only. Not medical advice. Always confirm dosing and safety with a licensed clinician.
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