Soda Water Side Effects: 7 Things to Know Before You Fizz

Last updated: 21 October 2026

Soda water side effects worry a lot of people. You hear scary claims — it ruins your teeth, melts your bones, causes cancer. But how much of that is true? Not much, it turns out. There are a few real side effects worth knowing. The rest are myths that refuse to die. Here are 7 things science says you should know before your next glass of fizzy water.

सोडा वाटर के फायदे और नुकसान (Soda Water Benefits and Side Effects)

सादा सोडा वाटर में सिर्फ पानी और कार्बन डाइऑक्साइड गैस होती है। चीनी, कैलोरी और कैफीन बिल्कुल नहीं।

फायदा यह है कि सोडा वाटर शरीर को सादे पानी जितना ही पानी देता है। मीठे कोल्ड ड्रिंक की जगह सोडा वाटर पीने पर 330 मिलीलीटर के हर कैन में करीब 144 कैलोरी बचती हैं, क्योंकि USDA के अनुसार कोला में 42 कैलोरी प्रति 100 ग्राम होती हैं (330 मिलीलीटर कोला का वजन करीब 343 ग्राम है) और सादे सोडा में शून्य।

नुकसान सिर्फ दो हैं। गैस से पेट फूलना और डकार आना आम है। और जिन लोगों को पहले से एसिडिटी या GERD है, उनके सीने की जलन बढ़ सकती है। दांत, हड्डी और कैंसर वाली बातें सादे सोडा वाटर के लिए सही नहीं हैं।

Sada Soda Peene Se Kya Hota Hai?

Sada soda peene se sirf do cheezein hoti hain: pet mein gas banti hai, aur acidity waalon ko jalan badh sakti hai. Baaki kuch nahi — na calorie, na sugar, na caffeine. In English: plain soda water gives you gas and can worsen existing reflux. It adds no calories, no sugar and no caffeine.

Are Bisleri, Kinley and Lehar Soda the Same as Plain Soda Water?

Yes, nearly. Packaged Indian sodas sold as plain soda are carbonated water, so everything on this page applies to them too.

Coca-Cola India lists what is in Kinley Soda on its own brand page in four words: "KINLEY SODA: CARBONATED WATER." That is water and CO2, nothing else. Bisleri Soda adds one more item. Its label on bisleri.com lists treated water, carbon dioxide and a stabilizer (INS 436). We could not find a Lehar Soda label online, so read the ingredients line on the bottle to be sure. For how plain soda differs from club soda and sparkling water, read club soda vs soda water vs sparkling water.

Sweetened fizzy drinks are a different product. Colas, sparkling juice drinks and energy sodas add sugar and acid. They carry tooth and weight risks that plain soda water does not. If your bottle lists sugar, the 7 points below are not the full story for it.

Can We Drink Kinley Soda Directly? Is It Good or Bad?

Yes, you can drink Kinley Soda directly, straight from the bottle or over ice. Kinley Soda is carbonated water, so on its own it is neither good nor bad for health. It has no sugar and no calories, and it hydrates you like plain water. The side effects come from the gas: burps, a full belly and, for people with reflux, heartburn. Sip it slowly. As a swap for cola, Kinley Soda is a good choice.

Is Bisleri Soda Good for Health?

Bisleri Soda is a safe everyday drink, and it helps your health mainly when it replaces a sugary drink. The Bisleri Soda label shows 0 kcal, 0.0 g total sugars and 0.0 g added sugars per 100 ml. So Bisleri Soda does not contain sugar. Sodium is 1.0 mg per 100 ml, and the label puts one 200 ml glass at 0.1% of the daily sodium value. You can drink Bisleri Soda directly as well. It does not give you vitamins or useful minerals, so do not drink it for nutrition.

Lehar Soda Benefits and Side Effects

Lehar Soda has the same benefits and side effects as any plain soda, as long as its label lists only carbonated water. We could not read a Lehar Soda ingredients label online, so check the bottle in your hand. If the label says carbonated water, the benefit is a drink with no sugar that hydrates like water. The side effects are gas and possible heartburn, the same as points 1 and 2 below.

Fizz Pine Ke Fayde Aur Nuksan (Appy Fizz and B Fizz)

When people say Fizz, they usually mean Appy Fizz or B Fizz, and neither one is plain soda water. The maker, Parle Agro, calls Appy Fizz a sparkling apple juice and B Fizz a malt flavoured drink. These are flavoured soft drinks. Read the sugar line on the label before you judge one. For teeth and weight, the sugar matters more than the bubbles. Hinglish mein: Fizz plain soda nahi hai. Iske fayde aur nuksan label par likhi cheeni (sugar) par depend karte hain, gas par nahi.

1. Does Soda Water Cause Bloating and Gas?

Yes, this one is real. CO2 gas expands inside your stomach.

When you drink soda water, the dissolved CO2 turns back into gas inside your belly. That gas has to go somewhere. It comes out as burps or causes a puffy, bloated feeling.

For most people, this is mild and lasts only a few minutes. But if you drink fast or gulp down a full glass at once, the bloating can feel worse. The fix? Sip slowly. Small sips give the gas time to escape gently.

Some people feel more bloated than others. If you are one of them, try drinking half a glass first. See how your body reacts. You can always drink more later.

2. Can Soda Water Make Acid Reflux Worse?

It may, if you already have GERD or bad acid reflux.

The CO2 bubbles increase the pressure inside your stomach. This can push stomach acid upward into your food pipe. That burning feeling in your chest? That is acid reflux.

The evidence here is weaker than most articles admit. Gut doctors at the University of Naples reviewed every survey on this and wrote:

"Some surveys showed a weak association between carbonated beverages and gastroesophageal reflux disease; however, the methodology employed was often inadequate and, on the overall, the evidence available on this topic is contradictory."
— Cuomo R, Sarnelli G, Savarese MF, Buyckx M, Nutrition, Metabolism & Cardiovascular Diseases 2009;19(10):683-9 (PMID 19502016)

The same review found stomach discomfort from the stretch only starts above 300 ml of fizzy drink in one sitting. Plain soda water is also milder than cola. Cola adds phosphoric acid and caffeine on top of the fizz.

If you have mild reflux, try small amounts of soda water. If it does not bother you, keep going. If it burns, switch to still water on bad days. Always listen to your body first.

3. Does Soda Water Damage Your Tooth Enamel?

Barely. The risk is real but very, very small compared to juice or cola.

When CO2 dissolves in water, it forms carbonic acid. So yes, soda water is more acidic than still water. A 2022 lab study in Portugal tested 32 carbonated bottled waters. None was above pH 6.8, and 10 were below pH 5.2. Of 73 still waters, 31 were above pH 6.8 (PMID 35191217).

Parry and colleagues at the University of Birmingham tested this on real human teeth in 2001. Sparkling mineral waters did dissolve a bit more enamel than still water. But the amounts were "of the order of one hundred times less than the comparator soft drinks" (PMID 11556958).

One detail in that paper matters more than the headline. The team took the gas out of a sparkling water and tested it again. The damage dropped, but it was low both times. They concluded that carbonation "may not be an important factor per se" in erosion. The sugar and acid in soft drinks do most of the damage, not the bubbles.

Your saliva is your best friend here. It helps wash the weak acid off your teeth. Want extra safety? Use a straw. Rinse your mouth with plain water after drinking. Do not brush right away. Give your mouth some time first.

4. Does Soda Water Weaken Your Bones?

No. This myth comes from cola studies, not soda water research.

The Framingham Osteoporosis Study scanned 1,413 women and 1,125 men. Women who drank a cola every day had 3.7% lower bone density at the hip than women who drank less than one a month (PMID 17023723). The effect showed up in women, not in men.

The study's own title says the rest: "Colas, but not other carbonated beverages, are associated with low bone mineral density." The authors add that "no significant relations between noncola carbonated beverage consumption and BMD were observed."

Plain soda water has no phosphoric acid at all. The suspects in cola are phosphoric acid and caffeine. Neither is in water and CO2, so this one is a myth for plain soda.

Packaged plain soda is the same. The Bisleri Soda label lists only treated water, carbon dioxide and a stabilizer. There is no phosphoric acid and no caffeine on it. So this side effect is a myth for plain soda water.

5. Does Soda Water Cause Cancer?

No. We found no study that links plain soda water to any form of cancer.

This myth has floated around for years. It likely started from fears about chemicals in plastic bottles or added ingredients in certain drinks. But plain soda water — just water and CO2 — has no cancer risk.

Plain soda water is water and carbon dioxide, and we found no health body that warns about it. If you make soda water at home with a soda maker, you also skip any bottle-related worries entirely.

6. Does Soda Water Dehydrate You?

No. Fizzy water hydrates you just as well as flat water.

British researchers tested 13 different drinks on 72 men. Each man drank one litre of still water and one litre each of three other drinks. They then measured four hours of urine to score how well each drink held water in the body (PMID 26702122). Only rehydration salts and milk beat plain still water. Sparkling water was one of the 13 and did not score worse than still water.

The CO2 leaves as gas through your mouth. It does not stop your gut absorbing the water underneath it.

Some people actually drink more water when it is fizzy because they enjoy the taste. If that is you, fizzy water helps your hydration — not hurts it.

In hot Indian weather, staying hydrated matters a lot. If soda water gets you to drink more, that is a health win.

7. Does Plain Soda Water Increase Weight?

No. Plain soda does not increase weight by itself, because plain soda water has zero calories and zero sugar.

The scare came from a 2017 rat study at Birzeit University (PMID 28228348). Rats drank gassy soft drinks for about a year. They gained weight faster than rats given the same drinks with the gas removed. Their ghrelin, the hunger hormone, was higher too.

That paper also had a small human arm, and most articles leave it out. Ghrelin rose in 20 healthy male students after carbonated drinks as well. So "no human study exists" is not true. What is true is that a hormone moved in 20 men in one sitting. That is a long way from proving plain soda water makes you gain weight. No trial has shown that.

The opposite claim is also weaker than it sounds. A team in Naples gave ten healthy people a 300 ml fizzy drink, scanned their stomachs, then let them eat until full (PMID 21999723). The fizz did stretch the stomach more than still water. It did not change how much they ate: 774 calories after the fizzy drink against 783 after water.

So do not drink soda water expecting it to cut your appetite. Drink it because it replaces something sweeter.

The real saving is the swap. USDA lists regular cola at 42 calories per 100 grams. USDA also weighs one fluid ounce (29.6 ml) of cola at 30.7 grams, so a 330 ml can weighs about 343 grams and carries about 144 calories (USDA 174852). Plain soda water is zero. Add a lemon slice or mint for taste and no sugar comes with it.

Who Should Be Careful with Soda Water?

Most people are fine. But three groups should watch their intake.

• GERD patients — fizz may trigger acid reflux. Try small sips first.
• IBS sufferers — extra gas may cause cramps and belly pain. Go easy.
• People with very sensitive stomachs — if plain soda water hurts, skip it. No drink is worth pain.

For everyone else, a daily glass of plain soda water is fine. It is a much better swap than a sugary soft drink.

The Smart Way to Enjoy Soda Water at Home

Make it fresh at home. It is cheaper and you control the fizz level.

The InstaCuppa Portable Soda Maker (Rs 2,199) makes fresh soda water in about 30 seconds and needs no power point.

Here is the honest running cost, checked on 21 October 2026. Our CO2 refill pack is Rs 999 for 30 capsules. That is Rs 33 a capsule, and one 8 g capsule carbonates 1 litre. So home-made soda water costs about Rs 33 a litre. This page used to say Rs 5-10. That figure was wrong and is now corrected.

Stock note, 21 October 2026: the InstaCuppa Portable Soda Maker and all three CO2 capsule refill packs (10, 20 and 30 capsules) are still showing out of stock on our store today.

Packaged plain soda is cheaper. Bisleri sells a case of 12 bottles of 750 ml for Rs 240 on its own store, and says prices may differ by city. That is 9 litres, or about Rs 27 a litre. A home maker means no crates to carry. So the case for a machine is convenience and fizz control, not a big saving.

Want to add taste without the bad stuff? Try our masala soda recipe or nimbu soda recipe. You decide how much sugar goes in.

For more on the good side of fizzy water, read is carbonated water good for you.

Frequently Asked Questions

Is soda water bad for you at night?

Not for most people. But if you have acid reflux, avoid fizzy drinks close to bedtime. The gas and acid can feel worse when you lie down.

Can soda water cause stomach ulcers?

No. The US National Institute of Diabetes and Digestive and Kidney Diseases says the most common causes of stomach ulcers are H. pylori infection and pain medicines called NSAIDs. Soda water is not one of them.

Is Kinley or plain soda water safe during pregnancy?

For most women, yes. The NHS pregnancy advice asks you to keep caffeine under 200 mg a day, and plain soda water such as Kinley Soda has no caffeine and no sugar. Heartburn is common in pregnancy, so if the fizz makes it worse, switch to still water. Check with your doctor if you have GERD.

How much soda water is too much per day?

We found no official daily limit. The Naples review found stomach discomfort shows up mainly above 300 ml in one sitting, so drink one glass at a time. If you feel bloated or gassy, cut back. Listen to your body and adjust.

Is Bisleri or Kinley soda the same as soda water?

Yes, nearly. Coca-Cola India lists Kinley Soda as carbonated water. The Bisleri Soda label lists treated water, carbon dioxide and a stabilizer. Read the ingredients line on any bottle, Lehar included: if it says carbonated water and no sugar, everything on this page applies.

Is soda water better than diet soda?

Yes. Plain soda water has only water and CO2. Diet colas add sweeteners, acids and often caffeine. In the Framingham study, diet cola showed the same link to lower hip bone density in women as regular cola. Plain soda water is the cleaner choice.

Does Bisleri soda contain sugar?

No. The Bisleri Soda label shows 0.0 g total sugars, 0.0 g added sugars and 0 kcal per 100 ml.

Sources

• Cuomo R, Sarnelli G, Savarese MF, Buyckx M. Carbonated beverages and gastrointestinal system: between myth and reality. Nutr Metab Cardiovasc Dis 2009;19(10):683-9. PMID 19502016
• Parry J, Shaw L, Arnaud MJ, Smith AJ. Investigation of mineral waters and soft drinks in relation to dental erosion. J Oral Rehabil 2001;28(8):766-72. PMID 11556958
• Tucker KL, Morita K, Qiao N, Hannan MT, Cupples LA, Kiel DP. Colas, but not other carbonated beverages, are associated with low bone mineral density in older women: The Framingham Osteoporosis Study. Am J Clin Nutr 2006;84(4):936-42. PMID 17023723
• Maughan RJ, Watson P, Cordery PA, et al. A randomized trial to assess the potential of different beverages to affect hydration status: development of a beverage hydration index. Am J Clin Nutr 2016;103(3):717-23. PMID 26702122
• Eweis DS, Abed F, Stiban J. Carbon dioxide in carbonated beverages induces ghrelin release and increased food consumption in male rats. Obes Res Clin Pract 2017;11(5):534-43. PMID 28228348
• Cuomo R, Savarese MF, Sarnelli G, et al. The role of a pre-load beverage on gastric volume and food intake. Nutr J 2011;10:114. PMID 21999723
• Coca-Cola India, Kinley brand page (ingredients of Kinley Soda), read 21 October 2026. coca-cola.com/in/en/brands/kinley
• Bisleri International, Bisleri Soda 750 ml product page with ingredients and nutrition label images, read 21 October 2026. bisleri.com
• Parle Agro, Appy Fizz and B Fizz brand pages, read 21 October 2026. Appy Fizz, B Fizz
• Morgado M, Ascenso C, Carmo J, Mendes JJ, Manso AC. pH analysis of still and carbonated bottled water: potential influence on dental erosion. Clin Exp Dent Res 2022;8(2):552-560. PMID 35191217
• NIDDK, Symptoms and causes of peptic ulcers. niddk.nih.gov
• NHS, Foods to avoid in pregnancy (caffeine limit). nhs.uk
• USDA FoodData Central, SR Legacy 174852, Beverages, carbonated, cola, regular (values per 100 g). api.nal.usda.gov

InstaCuppa Portable Soda Maker

Make sparkling water & soda at home. Portable, no electricity needed, CO2 capsule system.

Rs 2,199

Out of stock as of 21 October 2026

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