![]() You might also drink more than normal if you combine alcohol and caffeine (such as mixing alcohol with an energy drink). You might not realize the person has had too much alcohol, and the caffeine or energy drink might mask the drowsiness from alcohol. Mixing caffeine and alcohol puts you at higher risk of drinking and driving or getting into a vehicle with someone who has been drinking. If you're pregnant or breastfeeding you may want to limit or not have any caffeine.Ĭaffeine doesn't help you sober up if you drink too much alcohol. More than 300 mg of caffeine (about 2 to 3 cups of coffee) in a day may be linked to miscarriages and low-birth weight in babies.Ĭaffeine is passed through breastmilk, which might make your baby irritable or have trouble sleeping. It can also increase blood pressure, and if you already have high blood pressure, it can get worse. Regular use of more than 600 mg of caffeine a day might cause long-term effects such as sleep problems, thinning of bones and fractures, more anxiety, and stomach acidity. Most healthy adults that use low to moderate amounts of caffeine (up to 3 cups of coffee) every day don't seem to have any long-term effects. People born with heart problems have died from drinking large amounts of energy drinks that contain caffeine and herbal stimulants. It's rare for adults to die from having very large amounts of caffeine (overdose). People with anxiety disorders or heart problems shouldn't use large amounts of caffeine because it can make their condition worse. make you feel irritable, restless, and nervous.make your blood pressure go up and then drop to very low levels.cause a fast, irregular heartbeat (heart racing).Larger amounts of caffeine (600 mg or more) can: If you have caffeine close to bedtime, you may have trouble falling asleep, sleep for a shorter time, or not sleep as deeply. Small amounts of caffeine might make your blood pressure go up, increase your heart rate, and make you pee more. Some people are sensitive to caffeine, and even small amounts can make them feel sick. ![]() The effects usually start within half an hour and can last up to 12 hours. It can also improve physical work and thinking. Less than 200 mg of caffeine (1 or 2 cups of coffee) can make you more alert, put you in a better mood, and make you feel less tired. Your doctor or pharmacist can tell you if caffeine might work for you. snacks with caffeine (for example, gum, fruit chews, jelly beans): 30 to 50 mgĬaffeine can be used to treat some types of headaches, including migraines.milk chocolate (56 g or 2 oz.): 3 to 20 mg.dark chocolate (56 g or 2 oz.): 40 to 70 mg.cola drinks (355 mL or 12 oz.): 30 to 60 mg.some painkillers (1 tablet): 30 to 100 mg.energy shots or drinks (60 to 360mL): 4 to 240 mg.caffeine stimulants (1 tablet): 100 to 250 mg.Other products that have caffeine include: Some common products with caffeine amounts are: It's a stimulant that's found in coffee, tea, energy drinks, some pain medicines, as well as in foods and drink. Many people don't know that caffeine is a drug.
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