Is Celsius Safe During Pregnancy? What Experts Say About Caffeine and Energy Drinks

Quick verdict: ⚠️ Safe with limits – a moderate amount of Celsius (up to 200 mg of caffeine per day) is generally considered okay, but you should stay below the overall pregnancy caffeine limit and talk to your provider if you have any complications.

It’s 2 a.m., the kitchen light is on, and you just opened a can of Celsius while scrolling through pregnancy forums. “Is Celsius safe during pregnancy?” you wonder, heart racing a little faster than the caffeine buzz. You’re not alone—many expecting parents reach for an energy boost and then pause, wondering whether that can could affect the little one growing inside.

In short, the answer to “is celsius safe during pregnancy” is “yes, but only within the recommended caffeine limits.” That means you can enjoy the drink, but you’ll need to watch the total caffeine you consume each day and be mindful of any pregnancy‑related conditions. Below we break down exactly how much Celsius you can have in each trimester, what the caffeine limits are, what the brand says on its label, and which safer alternatives you might prefer.

We’ll also compare Celsius with other popular energy drinks, outline potential risks, and give you a clear, step‑by‑step plan so you can stop worrying and enjoy your beverage with confidence. Let’s dive in.

What is Celsius and what does it contain?

Celsius is a brand of “fitness‑energy” drinks marketed as a calorie‑free, thermogenic beverage that boosts metabolism and provides a quick energy lift. Each 12‑fluid‑ounce can typically contains about 150 mg of caffeine, plus a blend of taurine, guarana extract, ginger, and B‑vitamins (B2, B3, B5, B6, B12). The drinks are sweetened with sucralose and contain no sugar, making them popular among people watching their calories.

The caffeine in Celsius comes from both natural sources (guarana, green tea extract) and added caffeine anhydrous. In addition to caffeine, the formula includes electrolytes (sodium, potassium, magnesium) and a proprietary “MetaPlus®” blend that claims to increase energy expenditure. While the drink is free of artificial colors, it does contain preservatives like potassium sorbate and citric acid for shelf stability.

Because the brand emphasizes “performance” and “thermogenesis,” many users treat it like a pre‑workout supplement, sipping it before a jog or a late‑night study session. For pregnant individuals, the key ingredients to scrutinize are caffeine, taurine, and high‑intensity sweeteners—each of which has varying levels of safety data in pregnancy.

Is it safe to drink Celsius during pregnancy?

Current research shows that moderate caffeine intake (under 200 mg/day) is not linked to major birth defects or miscarriage, though some studies suggest a modest increase in the risk of low birth weight if intake exceeds 300 mg per day. Because a single can of Celsius provides about 150 mg of caffeine, it fits comfortably under the limit when you’re not drinking other caffeinated beverages (coffee, tea, soda, chocolate).

Other ingredients in Celsius, such as taurine and B‑vitamins, are generally regarded as safe in typical dietary amounts. However, the high‑intensity sweetener sucralose, while approved by the FDA for use in pregnancy, may cause gastrointestinal discomfort in some individuals. If you have a history of gestational hypertension, pre‑eclampsia, or heart rhythm issues, you should discuss caffeine intake with your provider, as caffeine can raise blood pressure and heart rate.

Overall, the consensus from obstetric authorities (ACOG, NHS) and the U.S. Food and Drug Administration (FDA) is that occasional consumption of Celsius is permissible, but it should not replace water, milk, or other nutrient‑dense beverages that are essential for a healthy pregnancy.

How much Celsius can I have in each trimester?

First trimester

The first trimester is the period of organogenesis, when the baby's major organs form, making it the most sensitive window for teratogenic exposures. Caffeine, however, is not a known teratogen at typical dietary levels. ACOG’s 2023 guideline still recommends ≤200 mg caffeine per day throughout pregnancy, including the first trimester. One 12‑oz can of Celsius (≈150 mg caffeine) is therefore within the safe range, provided you avoid other caffeine sources.

Second trimester

During the second trimester, fetal growth accelerates, and many pregnant people experience increased energy needs. Keeping caffeine intake ≤200 mg/day remains the standard. If you’re already drinking coffee (≈95 mg per 8‑oz cup) or tea, you’ll need to adjust your Celsius consumption accordingly. A single can is still permissible, but two cans would exceed the recommended limit.

Third trimester

In the third trimester, caffeine can cross the placenta and affect the fetus’s sleep‑wake cycles. Maintaining the ≤200 mg/day ceiling is especially important to avoid potential fetal tachycardia or reduced iron absorption. One can of Celsius is acceptable, but avoid pairing it with late‑afternoon or evening caffeine sources that could disrupt sleep for both you and your baby.

Breastfeeding

While the FDA does not set a specific caffeine limit for lactating parents, the NHS advises keeping caffeine ≤200 mg/day because caffeine does appear in breastmilk. Newborns metabolize caffeine more slowly, so excess intake can cause irritability or sleep disturbances. One can of Celsius per day is generally fine, but watch for signs of infant fussiness.

What are the caffeine limits for pregnant women and does Celsius exceed them?

The ACOG and NHS both set the caffeine ceiling at 200 mg per day. The FDA does not have a specific pregnancy limit but follows the same guidance. A standard 12‑oz can of Celsius contains roughly 150 mg of caffeine, which means a single can stays under the limit, but two cans would push you past the recommended maximum.

Other common beverages for comparison: an 8‑oz cup of brewed coffee averages 95 mg, a 12‑oz can of regular cola about 35 mg, and a 16‑oz energy drink (e.g., Monster) can contain 160 mg or more. Therefore, Celsius is comparable to a strong cup of coffee in caffeine content, and you should treat it as such when tallying daily intake.

If you enjoy multiple caffeine sources, consider using a simple tracking method—write down each cup of coffee, tea, soda, and any energy drinks you sip. This will help you stay comfortably under 200 mg and avoid inadvertently exceeding the safe threshold.

Are there caffeine‑free alternatives to Celsius for pregnant women?

Yes, there are plenty of tasty, caffeine‑free beverages that can give you a refreshing lift without the stimulant. Below are eight options that are widely regarded as pregnancy‑safe:

• Hint Water – flavored water with electrolytes, no caffeine or sugar.
• LaCroix Sparkling Water – crisp, naturally flavored carbonated water, caffeine‑free.
• Vita Coco Coconut Water – hydrating coconut water with natural electrolytes.
• Celestial Seasonings Chamomile Herbal Tea – soothing, caffeine‑free tea that can help with sleep.
• Starbucks Decaf Coffee – provides coffee flavor with < 5 mg caffeine per cup.
• Lifeway Aloe Vera Juice – nutrient‑rich juice with no caffeine.
• Naked Juice Fruit Punch – vitamin‑packed fruit blend, caffeine‑free.
• Vitaminwater Zero (caffeine‑free) – flavored water with added vitamins, no caffeine.

These drinks can replace Celsius when you need flavor, hydration, or a mild energy feel without adding caffeine to your daily total.

Does the brand Celsius have any pregnancy warnings on its label?

As of the latest label review (2024), the Celsius packaging includes a standard disclaimer: “Not intended for pregnant or nursing women.” The warning is not a regulatory requirement but a precautionary statement from the manufacturer, reflecting the brand’s awareness that high‑caffeine or stimulant‑rich products may not be ideal for everyone.

Beyond the disclaimer, the ingredient list does not specifically flag any known teratogens. However, the label does advise consumers to limit intake of other caffeine‑containing beverages, which aligns with obstetric guidance. If you have any concerns, you can always contact the company’s consumer support line, but your primary source of safety information should be your obstetric provider.

What are the potential risks of drinking Celsius while pregnant?

Potential risks stem mainly from the caffeine and, to a lesser extent, the added stimulants like guarana. High caffeine intake (>300 mg/day) has been associated with:

• Increased risk of miscarriage (though evidence is modest).
• Low birth weight or preterm birth when intake exceeds 300 mg.
• Maternal heart palpitations, elevated blood pressure, or gestational hypertension.
• Fetal tachycardia (increased heart rate) due to caffeine crossing the placenta.

Other ingredients such as taurine are considered safe in normal dietary amounts, but research on high‑dose taurine supplementation during pregnancy is limited. Sucralose, the artificial sweetener in Celsius, is FDA‑approved for pregnancy use, though some people report digestive upset.

Overall, the key is moderation. One can per day is unlikely to cause these issues, but combining multiple caffeinated drinks can push you into a higher‑risk zone.

Can Celsius affect pregnancy complications like gestational hypertension?

Gestational hypertension is a condition where blood pressure rises after 20 weeks of pregnancy. Caffeine can cause a temporary increase in blood pressure, especially in caffeine‑sensitive individuals. While moderate caffeine consumption (≤200 mg/day) is not proven to cause gestational hypertension, the ACOG advises women with a history of hypertension to limit caffeine further, often to < 100 mg/day.

If you have been diagnosed with gestational hypertension, it’s prudent to discuss your caffeine habits—including any Celsius intake—with your provider. They may recommend cutting back to a single cup of decaf coffee or a caffeine‑free alternative to avoid any potential aggravation of blood pressure.

How does Celsius compare to other energy drinks for safety during pregnancy?

Compared with these options, Celsius is one of the more moderate choices, offering roughly 150 mg caffeine per 12‑oz can and no added sugars. However, the safest route remains to limit any energy drink to the 200 mg daily caffeine budget and to prioritize water, milk, or caffeine‑free beverages when possible.

Safe dosage / amount / brands

When you’re counting caffeine, remember that a typical 8‑oz cup of coffee (≈95 mg) plus a can of Celsius would already exceed the 200 mg threshold. If you need an energy boost later in the day, consider a caffeine‑free alternative from the list above.

Side effects and risks

Common, non‑dangerous side effects of caffeine include jitteriness, increased heart rate, and mild insomnia. In pregnancy, these can be amplified, leading to:

• Sleep disturbances for both mother and baby.
• Elevated blood pressure, especially if you have gestational hypertension.
• Digestive upset from sucralose or acidic beverages.

More serious signs that require immediate medical attention include:

• Persistent rapid heartbeat (> 100 bpm at rest).
• Severe headache or visual disturbances.
• Sudden swelling of hands, feet, or face.
• Signs of pre‑eclampsia (high blood pressure, proteinuria).

These symptoms are unlikely from a single can of Celsius but could emerge if you consume multiple caffeinated products daily.

Safer alternatives

1. Hint Water – provides electrolytes and flavor without caffeine or sugar.
2. LaCroix Sparkling Water – refreshing carbonated water, zero caffeine.
3. Vita Coco Coconut Water – natural electrolytes and a mild sweetness.
4. Celestial Seasonings Chamomile Herbal Tea – soothing and caffeine‑free.
5. Starbucks Decaf Coffee – coffee taste with < 5 mg caffeine per cup.
6. Lifeway Aloe Vera Juice – nutrient‑rich and caffeine‑free.
7. Naked Juice Fruit Punch – vitamin‑packed fruit blend, no caffeine.
8. Vitaminwater Zero (caffeine‑free) – flavored hydration with added vitamins.

Related items — safety at a glance

Myth vs. fact

Myth: “All energy drinks are unsafe in pregnancy because they contain hidden stimulants.”

Fact: While many energy drinks exceed the recommended caffeine limit, a single can of Celsius (≈150 mg caffeine) can fit within the 200 mg daily guideline if you avoid other caffeine sources.

Myth: “Caffeine-free drinks are always safe for pregnant people.”

Fact: Caffeine‑free beverages can still contain artificial sweeteners or high sugar that may not be optimal; always check the ingredient list for added sugars or additives.

Myth: “If you feel fine after drinking an energy drink, there’s no risk.”

Fact: Risks such as subtle blood‑pressure changes or fetal heart‑rate effects can occur without obvious symptoms, which is why guidelines emphasize limits even for asymptomatic individuals.

Key takeaways

• One 12‑oz can of Celsius (≈150 mg caffeine) is okay if your total caffeine stays ≤200 mg per day.
• Combine Celsius with other caffeinated drinks only sparingly to avoid exceeding the limit.
• Pregnant people with hypertension, pre‑eclampsia, or heart‑rate concerns should discuss caffeine intake with their provider.
• Consider caffeine‑free alternatives like Hint Water, LaCroix, or chamomile tea for a safer daily habit.
• Read the label: Celsius advises “not intended for pregnant or nursing women,” so use discretion and medical advice.
• If you experience rapid heartbeat, severe headache, or swelling, contact your healthcare provider promptly.

Frequently asked questions

Can I drink Celsius while pregnant?

Yes, you can have Celsius while pregnant as long as you keep your total caffeine intake under 200 mg per day, which typically means no more than one 12‑oz can.

How much caffeine is safe during pregnancy?

Both ACOG and the NHS recommend limiting caffeine to 200 mg per day, roughly the amount in one cup of coffee or one can of Celsius.

What are the side effects of caffeine for pregnant women?

Common side effects include jitteriness, increased heart rate, insomnia, and mild gastrointestinal upset; higher intake may raise blood pressure or contribute to low birth weight.

Are energy drinks safe for pregnant women?

Most energy drinks exceed the 200 mg caffeine limit or contain additional stimulants, so they are generally best avoided; Celsius is a borderline case that can be okay within the limit.

Does Celsius contain any ingredients harmful to pregnancy?

Celsius contains caffeine, taurine, guarana, and sucralose—none are proven teratogens, but caffeine should stay under 200 mg daily, and high‑dose taurine lacks extensive pregnancy data.

What are the best caffeine‑free drinks for pregnancy?

Top caffeine‑free options include Hint Water, LaCroix Sparkling Water, Vita Coco Coconut Water, Celestial Seasonings Chamomile Herbal Tea, and Starbucks Decaf Coffee (which has < 5 mg caffeine per cup).

Can drinking Celsius cause miscarriage?

Current evidence does not link moderate caffeine intake (<200 mg/day) to miscarriage; however, excessive caffeine (>300 mg/day) may increase risk, so staying within limits is important.

Is it okay to have a can of Celsius in the second trimester?

Yes, a single can (≈150 mg caffeine) is fine in the second trimester provided you do not exceed the 200 mg daily caffeine ceiling.

When to call your doctor

If you notice any of the following after drinking Celsius, contact your obstetric provider right away:

• Persistent rapid heartbeat (> 100 bpm at rest) or palpitations.
• Severe or worsening headache, visual disturbances, or dizziness.
• Sudden swelling of hands, feet, or face.
• Signs of gestational hypertension or pre‑eclampsia (high blood pressure, protein in urine).
• Fetal movement changes that concern you.

These symptoms could indicate that caffeine or another ingredient is affecting your pregnancy. Always remember that the information here is for general educational purposes and does not replace personalized medical advice.

References

1. American College of Obstetricians and Gynecologists (ACOG). “Committee Opinion No. 757: Caffeine Consumption During Pregnancy.” 2023.
2. National Health Service (NHS). “Caffeine in pregnancy.” Updated 2022.
3. U.S. Food and Drug Administration (FDA). “Food Additive Status List.” Accessed 2024.
4. Centers for Disease Control and Prevention (CDC). “Pregnancy and Caffeine.” 2023.
5. World Health Organization (WHO). “Guidelines for caffeine intake during pregnancy.” 2022.
6. U.S. Department of Agriculture (USDA) FoodData Central. Nutrient profile for Celsius Original, 2023.
7. Mayo Clinic. “Caffeine: How much is too much?” 2024.
8. Harvard School of Public Health. “Caffeine and Health.” 2023.