Avo ParentingPregnancy & Food
Energy Drink

Energy Drink

Avoid★★★★★

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Energy drinks are sweet, carbonated drinks loaded with caffeine, sugar and stimulants such as taurine and guarana. Pregnancy guidance says to avoid them: a single can can take most or all of your daily caffeine allowance, with extra stimulants on top.

Key nutrients

B VitaminsEnergy drinks are fortified with B vitamins, but your prenatal supplement already covers these without the caffeine.

Safety

A standard 250 ml can of an energy drink contains around 80 mg of caffeine and the large 500 ml cans 150–160 mg, so one can is close to the 200 mg daily limit before any tea, coffee or chocolate. Guarana adds more caffeine than the label suggests, and taurine and other stimulants have not been studied in pregnancy, which is why the NHS and most other guidelines advise avoiding energy drinks entirely. High caffeine intake is linked to lower birth weight and, at very high levels, miscarriage; the drinks are also heavy in sugar — around 27 g in a small can — and can raise your heart rate and blood pressure. If you are drained, the fix is usually sleep, food, iron and fluids rather than a stimulant.

Avoid energy drinks: one can holds 80–160 mg caffeine plus other stimulants.The caffeine limit in pregnancy is 200 mg a day from all sources.Try water, decaf, or a short walk and a snack for an energy lift.

Check caffeine on the label in mg, not just 'high caffeine content' — the warning itself means the drink is unsuitable in pregnancy. Sugar-free versions remove the sugar but not the stimulants, so they are no better. For a lift, try a glass of cold water, a fruit-and-nut snack, a 10-minute walk in daylight or a nap; persistent exhaustion is worth a chat with your midwife to rule out anaemia or thyroid issues. Keep energy shots and pre-workout powders in the same avoid group.

Common questions

Can I have an energy drink when pregnant?Best not — one can carries 80–160 mg of caffeine plus guarana and taurine, which pushes you to the daily limit with stimulants that have not been studied in pregnancy.
Are sugar-free energy drinks OK in pregnancy?No better — they drop the sugar but keep the same caffeine and stimulants, which are the main concern.
I had an energy drink before I knew I was pregnant — should I worry?A single can is very unlikely to have caused harm; just avoid them from now on and keep other caffeine under 200 mg a day.

Did you know?

Guarana seeds contain about twice the caffeine of coffee beans, and their caffeine is often not counted in the figure on the label.
Caffeine's half-life stretches from around 5 hours to over 10 hours by the third trimester.
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