Plain gin contains zero sugar. Distilled spirits like gin, vodka, whiskey, and tequila have no sugar on their own because the distillation process separates alcohol from everything else in the base ingredient, including carbohydrates. Where sugar sneaks into your glass is through flavored gins, gin liqueurs, and especially mixers like tonic water.
Why Plain Gin Has No Sugar
Gin starts as a neutral alcohol made from grain (or sometimes grapes or molasses). That base spirit is distilled repeatedly until it reaches at least 96% alcohol by volume, leaving behind virtually all sugars, proteins, and other compounds from the original ingredient. The spirit is then redistilled with juniper berries and other botanicals to create gin’s distinctive flavor.
EU regulations make this especially clear for London Dry gin, the most common style on shelves. By law, London Dry gin cannot contain more than 0.1 grams of sugar per liter of finished product. That’s essentially nothing. A standard 1.5-ounce (44ml) serving would contain a fraction of a fraction of a gram, which rounds to zero for any practical purpose.
Gin Styles That Do Contain Sugar
Not every bottle labeled “gin” is sugar-free. Several popular categories add meaningful amounts:
Old Tom gin is a slightly sweetened style that predates London Dry. Historical sugar levels for Old Tom sat around 35 grams per liter, according to The Oxford Companion to Spirits & Cocktails. That works out to roughly 1.5 grams per standard serving. Some modern versions use less, but the category is defined by its added sweetness.
Sloe gin is technically a liqueur, not a gin, and it’s loaded with sugar. EU rules require a minimum of 100 grams of sugar per liter. A 30ml serving of sloe gin contains about 3 grams of sugar. Greenall’s Sloe Gin hits around 9 grams per 1.5-ounce pour, while Monkey 47 Sloe Gin comes in lower at about 1.5 grams per serving.
Flavored and pink gins vary wildly depending on the brand. Some add real sugar, others don’t. A few examples per 1.5-ounce serving: Beefeater Pink contains roughly 2 grams, Seagram’s Melon Twisted Gin has about 2 grams, and Seagram’s Pineapple Twisted Gin has around 1 gram. On the other hand, Malfy Gin Con Limone has less than 0.1 grams and Greenall’s Blueberry Gin has none at all. You can’t assume a flavored gin contains sugar, but you also can’t assume it doesn’t.
The Bigger Problem: Tonic Water
If you drink gin and tonic, the tonic is almost certainly your main source of sugar. Standard commercial tonic water contains upwards of 10 grams of sugar per 100ml. A typical 200ml pour of tonic adds about 20 grams of sugar to your drink, roughly the same as half a can of cola. That single gin and tonic delivers more sugar than several servings of Old Tom gin combined.
A study in healthy volunteers found that combining gin with regular tonic caused a sharper drop in blood sugar afterward compared to drinking either gin or tonic alone. The combination triggered reactive hypoglycemia: the tonic’s sugar spiked blood glucose, and the alcohol blunted the body’s normal hormonal response to the subsequent drop. Diet or “slimline” tonic avoids most of this. Light tonic waters typically contain around 3 grams of sugar per 100ml, cutting the sugar load by roughly two-thirds.
How to Check What You’re Drinking
Alcohol labels in the U.S. currently aren’t required to list sugar or carbohydrate content. As of early 2025, a proposed federal rule would allow (but not require) distilled spirits to include sugar content on an “Alcohol Facts” panel, similar to nutrition labels on food. Under current policy, brands can voluntarily list sugar content, and products with less than 0.5 grams per serving can label themselves “Sugar Free” or “Zero Sugar.”
Until labeling becomes standard, the simplest rule is this: if you’re drinking a traditional unflavored gin (London Dry, Plymouth, or most bottles that don’t mention a fruit or flavor on the label), the sugar content is effectively zero. If the bottle says “flavored,” “pink,” “Old Tom,” or “sloe,” check the brand’s website or look for a voluntary nutrition panel. And if you’re watching sugar intake, pay far more attention to what you mix your gin with than to the gin itself.