Thymalin Dosage & Reconstitution Guide (Immune Support Peptide Protocol)
Thymalin
Thymalin is a thymic peptide bioregulator studied for immune restoration, recovery support, and healthy aging. It is commonly used in short cycles rather than long continuous dosing.
How It Works
Immune Balance ↑ + Cellular Repair ↑ + Recovery Support ↑ → Resilience + Longevity Support
Thymalin is studied for its effects on immune regulation, T-cell support, hematopoiesis, and cellular repair. It is generally discussed as a short-cycle peptide used for recovery, resilience, and broader systemic support.
Thymalin is commonly discussed as a short-cycle immune-support peptide.
It is often used in restorative or seasonal support phases.
It is not typically structured as a long continuous daily protocol.
Higher-volume dosing may be more practical with IM use.
Thymalin Protocol
10 mg vial + 3.0 mL BAC Water → 1 unit = 33.3 mcg → Short Restorative Cycle
Standard Setup
Vial
10 mg
Water
3.0 mL bacteriostatic water
Concentration
3.33 mg/mL
Conversion
1 unit = 33.3 mcg
Days 1–5
Starting Phase
Dose2 mg
Units60 units
Volume0.60 mL
Days 6–10
Build Phase
Dose5 mg
Units150 units
Volume1.50 mL
Protocol Details
FrequencyOnce daily
TimingMorning or early evening
RouteSubcutaneous preferred for lower doses; IM may be more practical for higher-volume dosing
Cycle Length5–10 days
Repeat Cycles1–4 times per year depending on goals
Simple structure
Thymalin is usually structured as a short restorative cycle. The goal is immune regulation, recovery support, and resilience rather than long-term daily use.
Thymalin is usually structured as a short restorative cycle. The goal is immune regulation, recovery support, and resilience rather than long-term daily use.
When & Where to Inject
Can be used subcutaneously or intramuscularly
Use a consistent time each day
Rotate injection sites regularly
Higher injection volumes may be more comfortable with IM use
Injection Notes
Lower-volume doses may be easier to manage subcutaneously.
Higher-volume doses may feel more practical with IM administration.
Common sites include abdomen, thigh, upper arm, glute, or quad depending on route.
Consistency and site rotation matter most during the short cycle window.
Reconstitution & Dosing (10 mg Vial)
Vial10 mg
Water3.0 mL
Concentration3.33 mg/mL
Conversion1 unit = 33.3 mcg
Dose Reference
30 units = 1 mg
60 units = 2 mg
150 units = 5 mg
Reconstitution Steps
Draw 3.0 mL bacteriostatic water
Inject slowly down the vial wall
Gently swirl or roll the vial
Do not shake vigorously
Allow peptide to fully dissolve
Label with the reconstitution date
Refrigerate after mixing
Storage & Shelf Life
Storage & Shelf Life
Lyophilized (Unmixed)
Store frozen or refrigerated
Refrigerated (2–8°C): ~12–24 months
Frozen (−20°C): up to ~2–3 years
Store sealed, dry, and protected from light
Reconstituted (Mixed)
After mixing: refrigerate at 2–8°C
Avoid repeated freeze-thaw cycles
Use within ~30 days after reconstitution
Do not freeze after mixing
Best Practice
Keep the vial cold, protected from light, and avoid repeated temperature changes. If the solution becomes cloudy, discolored, or develops visible particles, it is safer not to continue using it.
Keep the vial cold, protected from light, and avoid repeated temperature changes. If the solution becomes cloudy, discolored, or develops visible particles, it is safer not to continue using it.
Cycle Length & Time Between Cycles
Short Restorative Cycle → Reassess → Repeat Seasonally if Needed
Standard Cycle Structure
Cycle Length5–10 days
Primary PhaseDaily use during the short cycle
Repeat Cycles1–4 times per year depending on goals
Time Between Cycles
Break8–12+ weeks between cycles
Often structured seasonally or around recovery, immune-support, or longevity-focused phases
Why cycle?
Thymalin is commonly used in short restorative cycles rather than continuous use. Cycling gives the body time to respond, reset, and allows you to reassess immune resilience, recovery, energy, and overall response before repeating.
Thymalin is commonly used in short restorative cycles rather than continuous use. Cycling gives the body time to respond, reset, and allows you to reassess immune resilience, recovery, energy, and overall response before repeating.
When to Stop or Pause Early
No noticeable benefit after a full short cycle
Injection site irritation becomes persistent
Headache, fatigue, or unusual symptoms appear
You are continuing without a clear immune-support, recovery, or longevity goal
Monitoring During Use
Immune resilience and recovery
Energy and recovery status
Inflammation and stress response
Injection site tolerance
Benefits
Supports immune system regulation
May support recovery after stress or illness
Associated with resilience and longevity-focused protocols
Often discussed in short restorative cycles
Potential Side Effects
Mild injection site irritation
Temporary soreness
Rare headache or fatigue during early use
Important Notes
This is a short-cycle peptide, not a long continuous protocol
Higher-volume doses may be better suited for IM use
Often used seasonally or in repeat cycles through the year
Can be included in immune-support or longevity-focused protocols
Important Disclaimer
Thymalin is not FDA-approved in the United States and is intended for educational and research discussion purposes only.
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