ProtokolPROTOKOL
Supplement

Pre-Workout (Stim)

Half-life

4–6 hours

What is Pre-Workout (Stim)?

Stimulant-based pre-workout typically containing caffeine, beta-alanine, and citrulline.

How Pre-Workout (Stim) works

Caffeine adenosine antagonism for focus and energy; beta-alanine for carnosine loading; citrulline for NO production; often includes nootropics (tyrosine, alpha-GPC) for mental performance.

Benefits & uses

Common uses: Focus, energy, strength, endurance, mental performance pre-workout.

Pre-Workout (Stim) dosage

Typical dose
1 serving 20–30 min pre-workout on empty or light stomach. Avoid within 6 hours of sleep.

Pre-Workout (Stim) half-life

4–6 hours (caffeine-dependent)

Pre-Workout (Stim) side effects

Caffeine dependency, elevated heart rate, sleep disruption if taken late. Paresthesia from beta-alanine.

  • Caffeine jitters, elevated heart rate
  • Sleep disruption
  • Beta-alanine paresthesia (tingling)
  • Dependency with chronic use

Track Pre-Workout (Stim) in Protokol.

Log doses, model half-lives, check interactions, and line it all up against your bloodwork. Free on iPhone and Android.

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For research and educational purposes only. This page is not medical advice and is not a recommendation to use any compound. Many compounds listed are not approved for human use, and some are prescription-only or controlled in your jurisdiction. Dosing figures are reference or observational reports. Talk to a qualified healthcare provider before starting, stopping, or changing anything. Protokol is for tracking purposes only.