4 Best Sugar-Free Tonic Waters Of 2026 (Zero-Sugar Mixers)
If you really enjoy tonic water but you don’t want all of the sugar that comes with enjoying them, there are a bunch of different options out there. For 2026, the Fever-Tree Sparkling Cucumber Tonic is still my top pick, and two easy-to-find budget options have earned places alongside it.
The problem with standard tonic waters is that they usually have a lot of sugar in them, or at least more sugar than you might really want to drink.
Thankfully, there are also sugar-free options on the market so you can get your tonic water and enjoy it without having to worry about the excessive sugar in it.
What is the best sugar-free tonic water? The best sugar-free tonic waters are usually going to have either no additional sweeteners or use only natural sweeteners in their recipe. Depending on what drink you’re planning on incorporating tonic water into, it can also be helpful to buy one with additional flavorings, such as cucumber or lemon.
In this guide, we will share with you the best sugar-free tonic waters out there. Keep reading to learn about the 4 best sugar-free tonic waters and more!
What Is Tonic Water?
Tonic water is a carbonated water that has quinine in it, which creates a sharp bittersweet flavor. You may recognize a few big-name brands from the grocery store, though there are many more tonic water distributors out there.
Most of the traditional tonic waters on the market have been sweetened so that the bitterness from the quinine has a more balanced flavor.
Tonic water was actually originally created as a kind of medicine for British soldiers in India. In order to mask the bitter flavor of the quinine, officers would mix it with soda and sugar, and thus, tonic water was born!
How To Choose A Tonic Water
Whether you’re looking for tonic water to mix a drink or you just like the feel and flavor of tonic water, you need options right?
There are a lot of tonic waters out there that are loaded with sugars. While you wouldn’t expect sugar to be a high part of something that has “water” in the title, you should beware that many of them have a lot of sugar.
The good news is that they don’t all have tons of sugar and some of them are sweetened with alternatives.
In this part of our guide, we have some tips for choosing a good sugar-free tonic water for your enjoyment.
Don’t Be Misled
Before you sit down and purchase a tonic water, take a moment to look at the nutrition facts and ingredients labels.
Learning to understand the ingredients used in your favorite tonic will come in very handy. It’s a good idea to get familiar with reading labels and know if this supposedly healthy drink is maybe too good to be true.
That diet tonic water you’ve been drinking might have just as many calories as a regular glass of soda!
On the same note, there are options out there that really are better. Some diet options are more reliable with their “no sugar” claims.
Is Sugar-Free Tonic Water Healthy?
In all truthfulness, tonic water has really very little to offer by way of health benefits. While it might not really be healthy or have health benefits for you, it also isn’t necessarily unhealthy.
Sugar-free tonic water is the best way to enjoy something similar to tonic water, but at most, the tonic water will just keep you hydrated, which is always a good thing!
As well as keeping you hydrated, if you were to measure sugar-free tonic water against its counterpart that is made with sugar, then you would find that the sugar-free options are healthier.
The 4 Best Sugar-Free Tonic Waters Available
Tonic water is a great way addition to a drink and can even be a refreshing beverage on its own! There are tons of different options to choose from, so we’ve searched the market to try to find you the very best options out there.
Our goal was to narrow down the choices to bring you sugar-free tonic water that is high-quality and has a delicious flavor without a bunch of additives or sugar.
Below, you will find our top picks for the 4 best sugar-free tonic waters out there.
| Rank | Product | Best Feature | Review |
|---|---|---|---|
| 1 | Fever-Tree Sparkling Cucumber Tonic Water | Light cucumber twist on classic tonic | Read review |
| 2 | Spindrift Lemon Sparkling Water | Real-fruit sparkling alternative to tonic | Read review |
| Rank | Product | Best Feature | Review |
|---|---|---|---|
| 1 | Fever-Tree Sparkling Cucumber Tonic | Premium botanical flavor, naturally sugar-free | Jump to review |
| 2 | Amazon Grocery Zero Sugar Tonic | Big bottle, bargain price | Jump to review |
| 3 | Canada Dry Diet Tonic | Single-serve 10 oz bottles | Jump to review |
| 4 | Spindrift Lemon Sparkling Water | Best tonic alternative | Jump to review |
1. Fever-Tree Sparkling Cucumber Tonic Water (Best Overall)
This first option comes to you in individual glass bottles of light cucumber tonic water. There are 24 bottles in this package.
This is flavored with fructose (which is fruit-derived and only causes a low rise in blood sugar as opposed to glucose) but it does not contain refined sugar.
It also has an added light cucumber flavor that helps to balance the bitterness that tonic water is known for. The combination is light and refreshing. The cucumber flavor in this tonic water comes from cucumber extract.
The ingredients list is pretty simple with carbonated spring water, fructose, citric acid, natural cucumber flavor, natural lemon flavor, other natural flavors, and quinine.
These are perfect for mixing or even just drinking!
Pros:
- Low in calories
- Flavored naturally with cucumber
- Sweetened with fructose
- Comes in individual glass bottles
- Quality and reliable option
Cons:
- These are a little bit more expensive because of the quality
2. Amazon Grocery Zero Sugar Tonic Water (Best Budget)
If you mix drinks for a crowd, this is the sugar-free tonic I keep stocked. It is a large 33.8 ounce bottle that routinely costs less than a single can of the premium brands, and shoppers rate it well above average for a store label.
The flavor is a clean, classic tonic with the bitter quinine edge you want and zero sugar on the label, so it carries a gin and tonic without adding empty calories. It is my default for batch cocktails like the ones in our cocktail guides.
The big bottle does lose carbonation once opened, so it is best for occasions when you will finish it rather than nursing it over a week.
3. Canada Dry Diet Tonic Water (Best Multipack)
Canada Dry has been making tonic longer than most of us have been drinking it, and the diet version keeps that familiar taste without the sugar.
It comes as a case of small 10 ounce plastic bottles, which solves the flat-tonic problem entirely. Each bottle is one or two drinks, so every pour is fully carbonated.
It is the practical choice for households where tonic gets used a little at a time, and the per-bottle cost stays reasonable.
4. Spindrift Lemon Sparkling Water (Best Tonic Alternative)
This next one is a smooth alternative to tonic water.
It’s actually a lemon-flavored sparkling water, which is extremely similar but not quite as bitter as traditional tonic water.
The citrus flavor makes it refreshing and more enjoyable flavor-wise. This is flavored with real fruit and does not contain any sugar.
This mixture is truly just sparkling water and real squeezed fruit mixed together. Eliminate some of the bitterness and enjoy a touch of citrus without all of the sugar and additives.
It’s completely unsweetened so there aren’t any other additives to be concerned about either.
It’s a classic twist to give you an alternative option to tonic water, and it is sugar-free!
Pros:
- Alternative to tonic water
- Lemon flavored for light refreshing citrus
- Comes in a pack of 24 cans
- No artificial anything added
- Sweetened and flavored with real lemon
Cons:
- Sometimes leaves an odd aftertaste in your mouth
Related Questions
There are plenty of options for sugar-free tonic waters out there if you look hard and find reliable options you can trust. Some sparkling waters even make a great substitute.
Check out the following related questions for some additional information that might be useful for you!
Can you drink tonic water every day?
Tonic water won’t hurt you if you drink it every day but it also really doesn’t have a lot of nutritional benefits either.
You may find yourself sensitive to quinine if you drink too much and we recommend sugar-free options when you plan to drink it regularly as a better choice.
Can you drink tonic water by itself?
Yes, you can drink tonic water by itself. It takes a pretty particular preference for tonic water and a lot of people use it as a mixer, such as in a gin and tonic.
It really is a matter of preference and whether or not you enjoy the flavor alone. It is perfectly safe to drink alone.
Fever-tree light tonic water is NOT sugar-free although it is certainly lower is sugar than normal tonic water
Sodium Saccharin is a sweetener!!
I buy only beverages that come in aluminum cans which can be recycled. It is very energy intensive to transport glass to be recycled and very energy intensive to melt it.
What is the difference between Schweppes Zero sugar tonic water and Schweppes diet tonic water?
Not sugar free…sucralose….chemical names ending in -ose are sugars! Saccharin is sweeter than table sugar…let’s update this list to be accurate!!