Caffeine: How Much Is Too Much?

Counting your coffee before adding a pre-workout is a smart habit. This guide sets out how caffeine acts in the body, the forms on labels, the intake levels EFSA considers safe for adults, pregnancy and teenagers, medicine cautions and how to total your day. No health claim for caffeine is authorised in the EU.

By the Healthana Editorial Team · Last reviewed: 01 Nov 2026

What caffeine is

Caffeine is a natural stimulant found in coffee beans, tea leaves, cacao, guarana and yerba mate, and it is also made synthetically for drinks and supplements. In the body it blocks adenosine, a messenger that builds up during waking hours and promotes sleepiness. That is why caffeine makes many people feel more alert, and why it can disturb sleep when taken late in the day.

Caffeine is widely studied in sport, and expert groups such as the International Olympic Committee have reviewed its use in athletes. However, no health claim for caffeine is authorised in the EU, so we focus here on amounts, safety and labels rather than promised effects. Sensitivity varies widely between people: genetics, body size, regular intake, pregnancy and some medicines all change how strongly and how long it acts.

Forms you'll see on labels

Find this form at Healthana

Examples from our shelves for some of the forms in the table above.

Caffeine blends (multi-source)Rule1 preLIFT, 30 ServingsBHD19.000Caffeine blends (multi-source)Applied Nutrition ABE Ultimate Pre-Workout, 375gBHD14.260

How much: EFSA guidance and food sources

Caffeine has no NRV. EFSA has not set a formal upper limit, but its 2015 safety opinion gives these levels for healthy people, counting caffeine from all sources:

• Adults: single doses up to 200 mg (about 3 mg per kg of body weight), and up to 400 mg a day spread through the day.
• Pregnant or breastfeeding women: up to 200 mg a day. The NHS gives the same 200 mg limit for pregnancy.
• Children and teenagers: about 3 mg per kg of body weight a day.
• Before intense exercise: a single dose up to 200 mg taken less than two hours before is considered safe for healthy adults under normal conditions.
• Sleep: around 100 mg close to bedtime may affect sleep in some adults.

Approximate amounts from EFSA: espresso (60 ml) 80 mg, filter coffee (200 ml) 90 mg, black tea (220 ml) 50 mg, cola (355 ml) 40 mg, energy drink (250 ml) 80 mg, plain chocolate (50 g) 25 mg. Coffee shop drinks can contain more. Some pre-workouts contain 200–330 mg in one scoop.

Who should check with a doctor or pharmacist first

• Pregnant women, women trying to conceive and breastfeeding mothers, given the 200 mg daily limit.
• Children and teenagers. Caffeinated sports products are labelled for adults; check the age on the pack and ask a doctor or pharmacist.
• People with a heart rhythm condition, high blood pressure, anxiety, panic attacks, or sleep problems.
• Anyone taking medicines known to interact with caffeine, such as some antibiotics (for example ciprofloxacin), the antidepressant fluvoxamine, theophylline, or stimulant medicines.
• People taking other stimulant products, including other pre-workouts or energy drinks on the same day.

How to read the label

• Total per serving: look for one clear caffeine figure in mg. Be cautious with blends that list guarana or green tea extract without a caffeine amount.
• Per scoop vs per serving: some pre-workouts list caffeine for 1.5 or 2 scoops.
• EU warnings: drinks with more than 150 mg per litre must state high caffeine content with a warning for children and pregnant or breastfeeding women; foods and supplements with added caffeine carry a similar warning and the amount per portion.
• Add up your day: coffee, tea, karak, energy drinks and supplements all count toward the 400 mg level.

Stimulant and stimulant-free products are both available in our pre-workout collection.

Bahrain & GCC notes

During Ramadan, many people notice headaches in the first days of fasting if they usually drink several cups of coffee or tea; cutting down gradually before the month can help. Caffeine taken with suhoor may make daytime sleep harder, and a strong pre-workout after iftar can push bedtime later. In hot weather, keep drinking water through training rather than relying on caffeinated drinks. A stimulant-free pre-workout from our pre-workout range is an option for late sessions.

Label check

Reading a real label

Applied Nutrition ABE Ultimate Pre-Workout, 375g

On the label	What it means
200 mg caffeine per scoop	Matches EFSA's 200 mg single-dose level for healthy adults
400 mg a day from all sources	EFSA's daily level: count coffee, tea and energy drinks too
12.5 g scoop	Every figure on the label is per scoop
Also 2 g beta-alanine, 4 g citrulline malate	Add these to any single-ingredient products you take

Figures from the product's own label. Always check the pack in your hand.See this product

Products with Caffeine

Always read the label and check the amount per serving.

Applied NutritionApplied Nutrition ABE Ultimate Pre-Workout, 375gBHD14.260Applied NutritionApplied Nutrition ABE Ultimate Pre-Workout Shot, 12 x 60mlBHD14.400Applied NutritionApplied Nutrition Critical Whey Protein + 100mg Natural Caffeine, 2kgOut of stockRule1Rule1 preLIFT, 30 ServingsBHD19.000

Shop all Pre-Workout (60)→

Frequently asked questions