How to Buy and Make Low Acid Coffee

Author: Jessica Simms

Updated: March 9, 2023

How to Buy and Make Low Acid Coffee

A lot of people who suffer from acid reflux are told to give up coffee—and that’s very disappointing advice to hear if you rely on it to get you going every morning. Luckily, you can reduce the acidity of coffee through a few simple methods.

There are also some low-acid coffee beans available, many of which have the same caffeine kick and great taste as other beans and roasts. If you’re looking for a low-acid coffee alternative, you’ll want to check out the info in this article!

Is Coffee Acidic?

Acidity has a couple of different meanings in the coffee world. When tasters and baristas refer to a specific bean’s acidity, they’re mostly talking about the bright flavor notes. This acidity is the kind you detect on your tongue, and may also be described with terms like sharp, lively, or fruity.

The specific acidic notes in the taste of coffee can take on different fruit flavors, including citrus, stone fruits, apple, or tropical fruit. It’s more present in some beans and roasts than others, but having at least a touch of an acidic flavor is important. Without it, the brewed coffee will taste flat, overly bitter, and one dimensional.

For health purposes, the kind of acid you’re concerned about isn’t the flavor profile but the actual pH level. This scale measures how acidic or alkaline a chemical compound is, on a scale of 0 (highly acidic) to 14 (highly alkaline), with pure water coming in at 7 (neutral).

From a pH standpoint, coffee is on the acidic side of the spectrum. Depending on the cup and brewing method, it can measure anywhere from 4.5-6 on the scale. Having said that, it’s still less acidic than other common beverages, like lemonade and soda, which tend to register somewhere around 2-3 pH.

In fact, coffee is less acidic than most fruits and has a similar pH level to a banana—not a fruit known for tasting particularly tart.

Can Coffee Cause Acid Reflux?

Acid Reflux is a chronic medical condition, also known as Gastroesophageal Reflux Disease (GERD). Also known as heartburn, acid reflux happens when the gastric acid produced in your stomach bubbles upwards into the esophagus. This irritates the soft lining leading to discomfort and, in severe cases, damage to the tissue.

Coffee won’t cause you to develop GERD if you don’t already have it, but it can aggravate the condition by stimulating the production of excessive gastric acid by your stomach. Acidic beverages can also cause short-term heartburn in those who don’t suffer from chronic acid reflux. Alcoholic beverages like wine and beer, as well as other caffeinated beverages like tea and cola, can also trigger flare-ups of acid reflux.

What You Should Know about Low-Acid Coffee

Low-acid coffee is a term applied to coffee beans that have a lower acid content than traditional coffee. In most cases, this does not mean they are completely neutral or alkaline on the pH scale, simply that they will produce a less acidic cup than other beans on the market.

Typically, these products are marketed to people with sensitive stomachs or acid reflux conditions as a less harmful alternative to traditional roasts.

One thing to keep in mind is that this term is not standardized across coffee roasters. Some low-acid coffee uses a specialized roasting process designed to reduce the amount of acid in the beans. In other cases, it’s simply an indication that the beans were grown in conditions that reduce their overall acidity.

How can you tell which is which? The best way is to do some research into the company that produces them. Most coffee roasters will describe their beans on their website, if not on their package. You can look for certain indicators about the roasting style, processing methods, and growing conditions in these descriptions (which we’ll explore in more detail below).

There are a few great brands out there for people looking for a low-acid bean. Some of our favorites are:

Trucup

Trucup’s method of lowering the acid in their coffee is all-natural and unique, relying on steam and water only. They’re one of the few companies with a low-acid light roast in their catalog (their Born To Be Mild roast). Other options from Trucup include a medium roast (Stuck In The Middle), a bold roast (Heart Of Bold), a French roast (Dark As Night), and an espresso blend (You’ve Got A Blend).

Puroast

The Organic French Roast from Puroast measures around 5.8pH, giving it about half the acidity of most coffee you’ll find on the market. Their beans are slow-roasted at a lower temperature. This both reduces the acid and boosts the antioxidant coffee, making it a nutritious option, too.

Mommee Coffee

Pregnant women are often out of luck when it comes to coffee. Not only do they need to limit caffeine, they’re also more prone to acid reflux because of the pressure of the fetus on their stomach.

Mommee Coffee was developed to combat this problem. It comes in a range of caffeine levels, each designed for a different stage of pregnancy or nursing. It’s also completely organic, and all the caffeine levels are water-processed to reduce the acid content.

HealthWise

This company uses a unique process called TechnoRoasting. Like the water processing used by the brands above, this process increases the vitamin and antioxidant content of the beans while reducing their acidity. The taste is mellower and milder than other coffees, without the acidity and bitterness you’ll find in other beans.

Lower Acidity in Your Coffee

Coffee is one of the most complex beverages on the planet from a chemical standpoint. There’s not one specific acid that’s most present in every bean. Instead, it’s the balance between acids that leads to the different flavor notes you’ll taste in your cup—and the pH level of the brew that could upset your stomach.

The organic acids in coffee include acetic acid (the acid found in vinegar), citric acid (found in lemons, oranges, and other citrus fruits), malic acid (found in green apples), and tartaric acid (present in grapes and bananas).

Coffee beans also contain chlorogenic acids, but these are broken down during the roasting process into quinic and caffeic acids, which are responsible for much of the bitterness in dark-roasted coffee.

Why does this matter? Because different processes to lower the acid of coffee target different compounds. The concentration of organic acids decreases during the roasting process. This is why a dark-roasted bean will have fewer fruity notes than a lighter-roasted version. From this standpoint, the bean becomes less acidic the more it’s roasted.

Remember those quinic and caffeic acids, though. Their presence in the bean actually increases with more roasting. Some coffees that are marketed as “low-acid” are simply roasted darker, but while they may taste less acidic they don’t necessarily have a lower pH content once they’re brewed.

Other low-acid coffees use specific processes to reduce the acid content of the bean. Beans roasted by Trucup, for example, are first put through a patented process that uses steam and water to draw out some of the chlorogenic acids. This makes them truly low-acid from a scientific standpoint. Even their light roasts have a pH of 5.74, while some of their darker roasts have a pH over 6. That’s as close to neutral as you’re likely to find in any brewed coffee.

Another method some roasters use to reduce the coffee’s acid content is called white roasting. This involves roasting the beans at a lower temperature and for less time. The result is a denser bean with a higher caffeine content per scoop. The chlorogenic acid also doesn’t have a chance to break down—and this is a good thing. Unlike the quinic and caffeic acids it breaks down into, chlorogenic acid is an antioxidant, and has a relatively high pH (for an acid).

While white coffee packs more caffeine punch and is kinder on your stomach, it also doesn’t taste quite the same as the coffee most people used to. It tends to be more nutty, with a noticeably thinner mouthfeel that’s more like tea. The high density of white coffee beans can also damage some home grinders—something to keep in mind if you usually buy whole bean.

3 Factors Affecting the Acidity of Coffee

We mentioned that some coffee beans are naturally less acidic than others, even before they make it to roasting. There are 3 main factors that affect the natural acids present in the bean:

Species and variety

Coffee isn’t just one plant. There are lots of species in the Coffea genus, though only two are widely grown commercially: Coffea Arabica (Arabica) and Coffea canephora (Robusta). Arabica beans tend to have fewer chlorogenic acids than Robusta beans, though they may have more of the organic acids that contribute to the bright, fruity flavor.

Arabica plants are further broken down into hundreds of varieties, which are often specifically bred for their taste qualities. Varieties from Kenya, such as the prized SL-28, are known for their high malic acid content, which gives them the sparkling, bright flavor. Arabica Bourbon, a variety grown frequently in South and Central America, has a lower acidity, known more for its buttery, chocolatey taste

Soil composition

The compounds in coffee don’t come from thin air. Much of what ends up in the bean is drawn from the soil it grows in. Highly-acidic soil, especially volcanic soil, will contribute to a higher concentration of acids in the beans. The presence of other nutrients, especially phosphorus, can reduce the acidity of both the soil and the beans it grows.

Elevation

Growing coffee in high-altitudes is mostly about controlling the temperature. Since coffee will only grow within 30° of the equator, most of the areas that produce it are very hot year-round at ground level. Going up into the mountains allows for a cooler growing environment.

Coffee grown at lower temperatures takes longer to mature. As a result, the beans tend to be denser and generate more flavor acidity and aroma when roasted. Lower-grown beans from areas like Brazil and Hawaii have a naturally lower acidity than those grown at higher elevations.

Should You Be Drinking Low-Acid Coffee?

People who suffer from acid reflux and GERD aren’t the only ones who can suffer health consequences when they drink acidic beverages. Foods and drinks that are acidic, or that cause the body to produce high amounts of acid, can have other health consequences as well.

Everything has a pH level, and that includes the human body. Individual organs have specific pH ranges that are considered healthy. Human blood is on the alkaline side of the scale, with a pH range of 7.35-7.45. Your digestive system, however, is generally acidic, and most so in the lower stomach, which has a pH range of 1.5-3.5.

If your body becomes too acidic, this condition is known as acidosis. When this happens, acid can build up in your body’s fluid and tissue. Typically, this happens when you eat too many acidic foods, and coffee can be one of the culprits in this condition. In extreme cases, it can be fatal—although it takes a lot more than just drinking coffee to push your body to this point.

Curious about the specific health consequence of eating or drinking too much acid? The truth is, they’re wide-ranging and can impact almost every part of your body, including:

Tooth enamel erosion. Acidic beverages encourage the bacteria in your mouth to create even more acids. This can wear away the enamel that protects your teeth over time, making them more susceptible to developing cavities and sensitivity.
Kidney stones. As your body processes foods that are acidic, the excess ultimately ends up in your urine. This can lead to the formation of uric acid stones in your kidneys.
Weakened bones. If your blood’s pH falls below neutral, your body responds by leeching calcium out of your bones to neutralize it. Over time, this can increase your risk of developing conditions like osteoporosis.
Stomach upset. As we mentioned above, eating acidic foods won’t cause conditions like stomach ulcers and acid reflux, but it can aggravate them and make the symptoms more severe.
Inflammation. When your body has to work harder to neutralize acidic foods, it can encourage inflammation in various body tissues. This could contribute to other conditions, including arthritis, reduced metabolism and weight gain, and skin conditions like acne.
Fatigue. The harder your body has to work to combat elevated acidity, the less energy you’ll feel like you have for other activities. That’s particularly ironic if the reason you’re drinking coffee is to help yourself wake up.

This doesn’t necessarily mean that coffee is bad for you, or that you have to give up your favorite fruity light roast. If you’re concerned about the effect of acid on your body, however, switching to a low-acid coffee can be a good compromise, letting you still enjoy your morning pick-me-up without worry.

How much coffee you drink can be a factor, too. If you usually only drink one cup a day, it’s probably not having too much impact on your health. Those who drink many cups throughout the day, though, may want to look into low-acid coffees for at least a portion of them to avoid the health consequences.

7 Easy Tips for Reducing Acidity in Your Coffee

The types of bean you use aren’t the only factor in the acidity of your daily cup of joe. Even if you only have light-roasted beans, there are steps you can take to reduce the overall acidity of the brew.

Use a cold-brewing method. Many of the natural acids in coffee beans require a certain level of heat before they’ll be extracted. By using cold water instead, you can reduce the acidity of the coffee by up to 70%. The only downside of cold-brewing is that it takes a long time—between 14 and 18 hours per batch. That’s not a great solution if you’re trying to brew up a cup before you go to work.
Use a paper-filtered brewing method. A paper filter removes some of the flavor compounds from brewed coffee. Brewing with a drip machine, AeroPress, pour-over dripper, or other paper-filtered methods will yield a brew with less acidity than brewing methods like French press or Moka pot that allow all of the extracted acids to make it to your cup.
Brew with hard water. This might seem counter-intuitive since most people will tell you to use filtered water for the best taste. The reason is that hard water can impart a bitter flavor to the finished brew. For acid reduction, though, hard water can be a good thing. The pH of hard water is around 8.5, which is on the alkaline end of the spectrum. This can help to neutralize some of the acids in the final cup.
Add eggshells to your coffee grounds. Eggshells are mostly made up of calcium carbonate. That’s the same alkaline compound you’ll find in things like chalk and antacids. Mixing cleaned, crushed eggshells in with the grounds in your filter will neutralize some of the acids while the coffee is brewing.
Use the right milk and sugar. Pasteurized cow’s milk is actually on the acidic side of the pH spectrum, though barely (around 6.7pH). Alternative milks, including soy milk and almond milk, are alkaline and will neutralize more acid. Similarly, some sugars are more alkaline than others. Raw sugar is slightly alkaline, but processed white sugar is slightly acidic.
Add an acid reducer to your brewed coffee. You can buy packets of acid reducers designed to be poured into a cup of coffee without affecting the flavor. Using these products can reduce the acidity of your coffee by as much as 90%. If you don’t have acid reducer on hand, baking soda can do the trick nicely, too. It doesn’t take much—about a ¼ teaspoon of baking soda added to a pot of coffee can neutralize some of its acidity.
Drink your coffee right after brewing. The chemical changes in coffee don’t stop after it’s brewed. Sitting on the warming tray increases the amount of quinic acid in the brew. The longer the pot sits on the warmer, the more acidic it will be. If you don’t want to drink the coffee right away, it’s better to pour it into a thermos or double-walled carafe to keep it warm.

Can I Drink Coffee If I Have Acid Reflux?

Drinking normal coffee when you have acid reflux can trigger flare-ups and aggravation of your symptoms. Switching to a low-acid coffee is one great way to let yourself keep drinking coffee without these unfortunate side effects. You can also use the methods described above to reduce a cup of coffee’s acidity.

Keep in mind this isn’t the case for everyone. Some people who have acid reflux aren’t bothered by the acidity in coffee. For others, it’s not the acidity but the caffeine that actually triggers symptoms and stomach discomfort. If you’re in this situation, changing to decaf coffee will be more likely to reduce your symptoms than simply looking for a low-acid version.

Ultimately, the successful management of acid reflux is different for everyone. Talk to your doctor about their recommendations if you’re looking for ways to avoid heartburn and stomach discomfort. By carefully identifying the source of your symptoms and limiting or eliminating those things from your diet, you can find a good balance that lets you still enjoy your favorite foods and drinks.

Please note, we’re not medical professionals – so everything in this article is not medical advice and you should absolutely ask your doctor if you have any medical issues.

Bonus: Best Ways to Avoid Acid Reflux

Looking for ways to avoid acid reflux—that don’t involve giving up coffee? While it’s one of the most targeted foods when people talk about heartburn, coffee isn’t always the main culprit. And acid reflux isn’t just about what you eat and drink, either. There are some other lifestyle shifts you can make that can help you to avoid symptoms. Check out some of the best recommendations below!

Quit smoking. Nicotine relaxes the esophageal sphincter, which is the valve separating the stomach from the esophagus. This lets stomach juices back up into the esophagus, thus causing heartburn. If you smoke, dip, or chew tobacco, cutting back or quitting entirely can help alleviate your acid reflux.
Lose extra weight. People who are obese are more likely to experience heartburn. Carrying extra fat around the midsection puts pressure on your stomach, which can lead to stomach acid leaking upwards. Hormonal changes linked to obesity can also be a contributing factor.
Don’t wear tight clothes. Similar to extra weight, tighter clothing can put pressure on your stomach. If you wear looser pants, especially while eating, you may notice a decrease in your symptoms.
Eat smaller, more frequent meals. When you eat a large meal and your stomach gets too full, it produces an excess of acid. Switching to smaller, more frequent meals moderates the stomach’s acid production and makes it less likely it will escape up into the esophagus.
Eat more slowly. Eating too fast can make it harder for your digestive system to keep up. Try taking smaller bites or putting your fork down between bites to discourage yourself from eating quite as fast.
Don’t lay down right after eating. Lying down with a full stomach causes more pressure on the lower esophageal sphincter. Instead, wait for 2 or 3 hours after you’ve eaten to go to sleep, and avoid snacking late at night.
Don’t sleep flat on your back. Another way to prevent too much pressure being put on your stomach is to change your sleeping position. If it’s uncomfortable for you to sleep on your side, you can elevate your head, instead. Use bed risers or wooden blocks under the top of the bed to raise it by 6-8 inches so you’re sleeping on a downward incline, rather than flat.
Avoid stress. While stress itself isn’t a cause of heartburn, it can lead to situations that make heartburn more likely. This includes interruptions in your sleep routines and lack of exercise. Limiting your stress makes it easier to keep your digestive system healthy.

Foods That Can Cause Acid Reflux

Coffee isn’t the only acidic food in most people’s diets—and acid isn’t the only thing that can trigger heartburn. Giving up other common acid reflux triggers is one way to avoid it and still drink your favorite coffee like you’re used to. Other foods that can trigger excess stomach acid production include:

Fried and fatty foods. Greasy foods can prevent your lower esophageal sphincter from tightening completely, allowing an opening that stomach acid can flow through. Your digestive system also has to work harder to break down fried and greasy food, keeping your stomach full longer and potentially triggering heartburn. Along with fried foods, meats with a high fat content, like hamburgers and other red meats, can contribute to heartburn.
Caffeinated beverages. Like nicotine, caffeine relaxes the muscles of the upper stomach and esophagus. This is one reason coffee often triggers symptoms, aside from the acidity of it. Cutting out other drinks that contain caffeine can help avoid it.
Alcoholic beverages. Alcohol can trigger the production of excess stomach acid. It also can make the tissues of your stomach more sensitive to acids, encouraging heartburn symptoms.
Carbonated beverages. When you drink a carbonated beverage, the bubbles expand when they get to your stomach. This increases the pressure on your stomach and makes acid reflux more likely. Sodas are some of the worst beverages for heartburn sufferers to drink since they contain multiple triggers (acid, caffeine, and carbonation). The same is true of carbonated alcoholic beverages, like beer, which also tend to be acidic in addition to containing carbonation and alcohol.
Dairy products. Most whole dairy products contain a lot of fat. The lactose in dairy is also difficult for the human stomach to digest. Especially bad for heartburn are whole milk, creamy sauces, and cheese.
Citrus fruit. Of all the foods we eat, citrus fruits and juices have some of the lowest pH ratings out there. All of that acid aggravates heartburn, especially if it’s combined with other triggers.
Tomato-based foods. There are two kinds of acid in tomatoes: malic acid and citric acid (coincidentally, two of the same acids that are found in coffee beans). Cutting out things that contain tomatoes, like pasta sauce and ketchup, can limit the excess of acid in your stomach.
Spicy foods. The heat in spicy foods comes from a compound known as capsaicin, which has been shown to slow the rate of digestion. In addition, it can irritate the tissues of your esophagus and stomach.
Chocolate. There is caffeine in chocolate, first of all, as well as a compound called theobromine. Together, these release a surge of serotonin, and that relaxes your muscles—including that dreaded esophageal sphincter we keep talking about.
Onions. Onions contain a lot of fermentable fiber. That makes you burp more often, which is one thing that can trigger acid reflux symptoms. Raw onions especially are something for heartburn sufferers to avoid.

By this point, you’re probably asking yourself just what you are allowed to eat if you have acid reflux. Keep in mind, though, you don’t necessarily need to cut out all of these foods to avoid symptoms. Eating them in moderate amounts, combined with other, healthier options, often lets you continue to enjoy your favorites—without paying the price for it later.

Acidic drinks don’t sit well with everyone. If you have medical conditions like ulcers, then you may feel like you have to give up your morning beverage.

Some coffee lovers even develop sensitive stomachs out of nowhere, making coffee drinking a thing of the past. You don’t need to give up coffee though, in fact, by picking up coffee that is less acidic, you even gain some health benefits.

Below is everything you need to know about coffee acidity and how to get a low acid coffee.

Coffee Acidity 101

When you think of acid, you probably don’t think of coffee; acidic drinks bring thoughts of soda pop to many people’s minds. The fact is that depending on the bean and quality of coffee you are drinking, it can be packed with acid that has the ability to upset your stomach.

While acid does give coffee some of its natural flavorings, some types of coffee are overly acidic. This can be found in cheaper coffee brands and even some fast food coffee. Darker roasts usually have the least amount of acid, while lightly roasted beans will have more acid. In fact, black coffee is less acidic than some beverages like milk.

10 Best Ways To Make Your Coffee Less Acidic

There are a variety of ways to reduce the amount of acid found in coffee:

Dark Roasts: As mentioned above, darker roasts take longer to cook. This naturally purges out more of the acid.
Baking Soda: Baking Soda is an alkaline that can neutralize the acid in your coffee. Salt also has this same approach, but many prefer to add in a small bit of baking soda instead.
Acid Reducers: If you are extremely sensitive to acid, then this may be the way to go. Some acid reducers have the ability to remove 90% of acidity from your coffee.
Paper Filters: The filters are able to catch more oils and can help to keep as much acid from getting into your coffee cup.
Grinding: The finer you grind your coffee, the less acid will be released. The finest coffee will always be less acidic than coarser mixes.
Brew Time: Water brings out the acid from the coffee beans. By shortening the amount of time, the beans are in the water; you release less acid.
Natural Alternatives: There are tons of natural coffee blends that are low acid. These specialty blends can be found at some grocery stores and through online retailers.
Hard Water: Hard water is water that has more minerals and calcium than normal. It also lacks sodium, which is one of the contributing factors to more acidic coffee.
Cold Brew: When you use cold water to make coffee, less acid escapes from the beans. Cold-brew does take around 24 hours to make, but colder water doesn’t extract as much acid.
Temperatures: The higher the temperatures, the more acid is released. For less acidic coffee, use cooler water.

Benefits of Low Acid Coffee

There are a ton of health benefits to coffee, especially if you choose a low acid blend. Drinking coffee can help with digestion and give you a healthy boost of energy during the day. It is also a well-known fact the coffee can act as an anti-inflammatory, which is perfect for those that are more athletic.

On top of that, there are a ton of antioxidants in coffee like chlorogenic acid, which actually helps with heart health. There are also phytochemicals that can help protect you against various diseases. There are even reports that coffee can naturally help you fight back against depression, a common mental illness.

How Coffee Lovers Can Manage Acid Reflux

The most important thing you need to remember if you suffer from acid reflux is how to manage it. As mentioned above, there are several ways to reduce the amount of acid in your morning cup of joe. First off, determine how badly coffee seems to upset your stomach.

If you have intense heartburn directly after drinking coffee, then you will want to reduce the acid as much as possible. In this case, an acid reducer with a high reduction percentage may be best. If coffee only slightly bothers your stomach, then you can simply add in some baking soda or salt.

To help lessen the effects without additives, go for darker roasts, and control your temperature. Cold-brew coffee may be a great way to have light roasts while experimenting with a new morning beverage.

Fresh Coffee Is the Best Coffee

The longer coffee sits around; the more acid is going to have a chance to creep out. This is because, like with just about any product, there are always chemical reactions taking place. These reactions change the taste of the coffee over time and, if left sitting for long enough, make it completely undrinkable for most people.

To cut down on the amount of acid, only make the amount of coffee you know you’re going to drink. Make sure to finish it off, and if you leave it sitting for too long, just make another cup. This is especially important if you’re acid sensitive.

FAQ

What is low acid coffee?

The acid contained in coffee has meant that those with sensitive stomachs have had to steer clear of regular coffee consumption, until the advent of low acid coffee. Coffee can contain around 50 types of acids in varying concentrations; low acid coffee removes these acids to create a coffee that is easy on the stomach!

How to make low acid coffee?

Low acid coffee is produced using methods such as high-pressured steam washing and roasting beans at lower temperatures for longer. Additionally, the type of bean used makes a difference in how acidic the coffee will be, as beans sourced from high mountain regions are more acidic in nature. Whatever the process, we welcome low acid coffee with open arms!

What kind of coffee has low acidity?

Examples of coffee that have low acidity include Monsooned coffees from Indonesia and coffees beans that are cultivated at lower altitudes. There is evidence of coffee beans cultivated in volcanic soil having higher acid concentrations and this means that coffee beans sourced from countries such as Venezuela that do not have volcanic soil produce coffee with low acidity.

Is Sumatra coffee low acid?

Sumatran coffee is renowned for being a coffee that is low in acidity and is used in several low-acid coffee blends. This is due to a number of factors but is mostly due to the coffee being cultivated at lower altitudes in soil that has very low acidic properties. Coffee is indeed a science!

Does Nespresso have low acid coffee?

Nespresso Coffees have an average pH of 5.0 making them slightly acidic. Nespresso does not have coffees that they define as high or low acid and there are no specific low acid coffees in the Nespresso range. If you’re looking to reduce adverse reactions to high acid content, aim for capsules that have a lower caffeine content and a longer roast time.

Summary and Conclusion

Coffee is acidic, and it can aggravate acid reflux and heartburn. Finding a low-acid alternative, or taking extra steps to limit the acid in your daily cup, can help with these symptoms greatly. Coffee also isn’t the only thing that causes these conditions. If you’re committed to your daily java, making other lifestyle and dietary changes can let you keep drinking it heartburn-free.