👨 Testosterone Delivery Method Comparison Simulator

Topical Gel — Daily Application, Steady Hormone Levels

Gel delivers testosterone through skin absorption in small daily doses.

• Daily: Application frequency (same time each morning)
• Low: Peak-to-trough swing (flat daily curve)
• ~days: Time to steady state (short equilibration)
• Present: Transfer risk (skin-to-skin contact)

How gel absorption works

Gel is absorbed through skin continuously, producing a smooth curve.

Injectable Testosterone — Peaks, Troughs, and Dosing Intervals

Injections create a sawtooth pattern of high peaks and low troughs.

• 1-2 wks: Typical interval (cypionate/enanthate esters)
• High: Peak level (shortly after injection)
• Low: Trough level (just before next dose)
• Possible: Mood/energy swings (tied to fluctuation)

Why injections fluctuate

Ester depot releases hormone fast then decays exponentially until redosed.

Subcutaneous Pellets — Slow, Long-Term Hormone Release

Pellets implanted under skin release hormone gradually over months.

• ~3-6 mo: Redosing interval (minor procedure required)
• Gradual: Decline pattern (exponential-like taper)
• Minor surgery: Insertion method (local anesthesia)
• Notable: End-of-cycle dip (near depletion)

Pellet release mechanics

Compressed hormone crystals dissolve slowly, tapering off over months.

Skin Transfer and Injection Site Considerations

Application site, technique, and hygiene affect outcomes and safety.

• Cover site: Gel transfer risk (avoid skin contact)
• Recommended: Injection site rotation (reduces scarring/pain)
• Keep dry: Pellet site care (first few days)
• Method-specific: Site reactions (redness, soreness, bruising)

Practical site management tips

Proper technique reduces irritation, transfer risk, and site complications.

Choosing a Delivery Method by Patient Preference

Selection weighs stability, convenience, cost, and personal routine.

• Gel: Prefers steady levels (daily commitment needed)
• Pellet: Prefers infrequent dosing (minor procedure tradeoff)
• Injection: Prefers clinic visits (flexible interval options)
• Essential: Shared decision-making (patient-provider discussion)

Matching method to lifestyle

Best method reflects patient adherence style and stability preference.

No single method is universally best; fit matters most.