Caffeine Anhydrous
1,3,7-Trimethylxanthine. Stimulant, adenosine receptor antagonist.
This page describes what Caffeine Anhydrous is and its known risks. It is not medical advice and not a guide to using it. Many of these substances are prescription-only or illegal to use without a prescription. Speak to a doctor.
- Class
- Stimulant
- Legal status
- Over-the-counter (unrestricted)
- Half-life
- 5 hours (varies by individual metabolism)
- Liver strain
- Low
- Kidney strain
- Low
- Converts to estrogen
- None
- Suppresses natural hormones
- Not typically
Medical uses
- Fatigue/alertness (general)
- Mild analgesic adjuvant
What it does in the body
Metabolic
- Increased alertness/energy
- Mild fat oxidation increase
- Improved endurance and strength performance (well-documented ergogenic aid)
Forms, half-life and detection
| Form | Half-life | Reported detection window |
|---|---|---|
| Oral | 5 hours (varies by individual metabolism) | 1-2 days |
Side effects and health risks
Heart and blood vessels
- Increased heart rate
- Increased blood pressure (mild, dose-dependent)
Neurological
- Anxiety
- Jitteriness
- Insomnia if taken late
- Tolerance with regular use
Gastrointestinal
- Upset stomach (some individuals)
Questions
What is the half-life of Caffeine Anhydrous?
About 5 hours (varies by individual metabolism). Half-life is the time for the level in the blood to fall by half.
How long is Caffeine Anhydrous detectable?
Testing windows of 1-2 days are reported, depending on the test and the person.
Is Caffeine Anhydrous legal?
Over-the-counter (unrestricted). Laws differ by country and change; check the rules where you live.
What blood tests matter with Caffeine Anhydrous?
Ask a doctor which tests suit you.
What are the side effects of Caffeine Anhydrous?
Heart and blood vessels: increased heart rate and increased blood pressure (mild, dose-dependent). Neurological: anxiety, jitteriness and insomnia if taken late. Gastrointestinal: upset stomach (some individuals).
For information only, not medical advice. MyoStats is a tracking tool used at your own discretion. Speak to a doctor before changing your training, diet, medication or anything you take.