NUTRACEUTICALS
Natural caffeine (98%, from green tea)
Natural caffeine from green tea supports alertness, energy and focus.
Also known as: green tea caffeine, caffeine, natural caffeine from green tea, Natural caffeine 98%
At a glance
- Form
- Natural caffeine 98% · from green tea
- Category
- Nutraceuticals
- In an apiece formula
- 50 mg a day (you can change it)
- Recommended intake
- No recommended intake (not an essential nutrient)
- Upper limit
- No established UL
- Studied for
- Energy & vitality, Focus & memory*
- Reference
- NIH ODS: Dietary Supplements for Exercise and Athletic Performance fact sheet
What the research says
In a study of 27 adults, one 50 mg dose of caffeine made people more alert within an hour and more accurate at switching tasks.*
Placebo-controlled crossover trial · 27 · Owen GN, Nutr Neurosci 2008. Read the study on PubMed
Who should be careful
Our safety rules leave natural caffeine out of a formula, or keep the amount lower, with:
Medicines and supplements
- Antithyroid medicine
- Phentermine or Qsymia
- Naltrexone-bupropion
- Amiodarone or dronedarone
- Other heart-rhythm medicine
- MAO-B inhibitor for Parkinson’s
- Decongestant pill
- Theophylline
Health conditions
- Eating disorder, now or recovering
- Bipolar disorder
- Schizophrenia, schizoaffective disorder or psychosis
- Heart failure or cardiomyopathy
- Arrhythmia
- Coronary artery disease, heart attack or stent
- Overactive thyroid / Graves’
- Acute porphyria
Life stage
- Pregnancy
- Breastfeeding
- Trying to conceive
Always check with your doctor or pharmacist before adding a supplement if you take medication, are pregnant or nursing, or have a health condition. Stay under the upper limit from all sources combined, including multivitamins.
From the Journal
- Why am I always tired, and what causes the afternoon crash?
The everyday reasons for constant tiredness and the 3 pm slump, which blood tests to ask your doctor about, which nutrients have been studied, and the signs that need a doctor soon.
Questions
How much natural caffeine a day?
apiece formulas usually include 50 mg a day. The recommended intake for adults is No recommended intake (not an essential nutrient). Upper limit: No established UL.
What is natural caffeine used for?
Natural caffeine from green tea supports alertness, energy and focus. In apiece it is part of formulas for Energy & vitality, Focus & memory.*
Who should be careful with natural caffeine?
apiece’s safety rules leave it out or limit it with: Antithyroid medicine; Phentermine or Qsymia; Naltrexone-bupropion; Amiodarone or dronedarone; Other heart-rhythm medicine; MAO-B inhibitor for Parkinson’s; Decongestant pill; Theophylline; Eating disorder, now or recovering; Bipolar disorder and others. Check with your doctor or pharmacist if any apply to you.
Can I get natural caffeine in a personalized supplement?
Yes. apiece builds one daily blend around your goals and, if you have them, your lab results. Natural caffeine can be part of it at the amount listed, with every ingredient shown and never more than 10 capsules a day.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This page is general information, not medical advice. Check with your doctor or pharmacist before starting a supplement, especially if you take medication, are pregnant or nursing, or have a health condition. Updated 2026-10-21.