Caffeine Anhydrous

Energy & focus

Function & benefits

Caffeine helps increase alertness, attention and concentration and increases endurance capacity during muscular effort (supported by positive EFSA scientific opinions at specified doses).

Dosage & how to use

Recommended dose	100–200 mg per dose (max 400 mg a day for healthy adults)
Best time to take	In the morning or before training; avoid it after 2 pm
Frequency	1–2 times daily

Important warnings

EFSA’s safe limit in pregnancy is 200 mg per day at most, from all sources

High doses cause palpitations, anxiety and a temporary rise in blood pressure

Drug interactions

It interacts with ephedrine, asthma medication (theophylline) and drugs for blood pressure and irregular heartbeat.

Scientific references

EFSA Journal 2015;13(5):4102 (safety of caffeine)
NIH ODS: Dietary Supplements for Exercise and Athletic Performance

View in the supplements guide

Related supplements

📚 Published sources and research: European Food Safety Authority (EFSA) • National Institutes of Health (NIH - ODS) • PubMed / Cochrane databases

Content last updated: 17 October 2026 · Based on published sources and research (EFSA / NIH / PubMed)

⚖️ Medical disclaimer: The information and data provided here are for health education and nutritional guidance only. They are not a medical diagnosis and never replace a direct consultation with your doctor or pharmacist. Always consult your doctor before starting any supplement, especially during pregnancy or breastfeeding or when taking long-term medication.