Home Ingredients PurCaf® (Organic Caffeine from Green Coffee)
EnergyAthletic Performance

PurCaf® (Organic Caffeine from Green Coffee)

Evidence Level
Strong
1 Clinical Trial
3 Documented Benefits
4/5 Evidence Score

PurCaf® is an organic caffeine derived from green coffee beans, offering a natural, clean-label source of caffeine. Caffeine reliably supports energy, alertness, and exercise performance.

Studied Dose Commonly 100 to 200 mg per serving; performance studies use about 3 to 6 mg per kg.
Active Compound Caffeine, from natural green coffee or tea sources.

Benefits

Energy and alertness

Caffeine is the world's most used stimulant, reliably increasing alertness, focus, and perceived energy.

Supported by Trial 1

Exercise performance

A meta-analysis confirmed caffeine improves endurance performance and time to exhaustion, a benefit used widely in sports nutrition.

Supported by Trial 1

Focus

Caffeine sharpens attention and reaction time, especially when tired.

Supported by Trial 1

Mechanism of action

1

Adenosine blockade

Caffeine blocks adenosine receptors in the brain, reducing the feeling of fatigue and increasing alertness.

2

Catecholamine release

Caffeine promotes release of adrenaline, supporting energy availability and exercise output.

Clinical trials

1
Caffeine and Endurance Performance — Meta-Analysis
PubMed

Systematic review and meta-analysis of caffeine intake on endurance performance. (Wang et al. 2022, Nutrients)

Adults across multiple trials.

Caffeine improved endurance running performance and time to exhaustion versus placebo.

Side effects and drug interactions

Common Potential side effects

Can cause jitteriness, rapid heartbeat, or trouble sleeping.
Avoid late in the day if you are caffeine-sensitive.
Account for caffeine from all sources to avoid overdoing it.

Important Drug interactions

Stimulant medications — additive effects; use caution.
Some antibiotics and antidepressants slow caffeine clearance.
Pregnancy — limit caffeine; consult a doctor.

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Frequently asked questions about PurCaf® (Organic Caffeine from Green Coffee)

What is PurCaf® (Organic Caffeine from Green Coffee)?

PurCaf® is an organic caffeine derived from green coffee beans, offering a natural, clean-label source of caffeine. Caffeine reliably supports energy, alertness, and exercise performance.

What is the recommended dosage of PurCaf® (Organic Caffeine from Green Coffee)?

The clinically studied dose for PurCaf® (Organic Caffeine from Green Coffee) is Commonly 100 to 200 mg per serving; performance studies use about 3 to 6 mg per kg.. Always follow product labeling and consult a healthcare provider for personalized dosing recommendations.

What is PurCaf® (Organic Caffeine from Green Coffee) used for?

PurCaf® (Organic Caffeine from Green Coffee) is studied for energy and alertness, exercise performance, focus. Caffeine is the world's most used stimulant, reliably increasing alertness, focus, and perceived energy.

Are there side effects from taking PurCaf® (Organic Caffeine from Green Coffee)?

Reported potential side effects may include: Can cause jitteriness, rapid heartbeat, or trouble sleeping. Avoid late in the day if you are caffeine-sensitive. Always consult a healthcare provider before starting any new supplement, especially if you have underlying conditions or take medications.

Is PurCaf® (Organic Caffeine from Green Coffee) safe to take?

Whether PurCaf® (Organic Caffeine from Green Coffee) is safe depends on the dose, your overall health, and any medications you take. At studied doses, reported side effects can include: Can cause jitteriness, rapid heartbeat, or trouble sleeping. It may also interact with certain medications. PurCaf® (Organic Caffeine from Green Coffee) is not suitable for everyone — consult a healthcare provider before use if you are pregnant or breastfeeding, have a medical condition, or take prescription medications.

References(1 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Wang Z, Qiu B, Gao J, et al. Effects of Caffeine Intake on Endurance Running Performance and Time to Exhaustion: A Systematic Review and Meta-Analysis. Nutrients. 2022;15(1)..PubMedUsed to support: Meta-analysis supporting performance benefit of caffeine (the active in this branded caffeine).