Keto and Alcohol: Low-Carb Drinks and How Alcohol Affects Ketosis
Spirits have no carbs, but that is only half of the story. Alcohol changes how your body uses fuel.
Short answer: Zero-carb spirits usually do not end ketosis, but they pause fat burning while your body clears the alcohol. Sugary drinks can end ketosis.
Carbs by drink (typical serving)
| Drink | Serving | Approx. carbs |
|---|---|---|
| Vodka, gin, whisky, tequila, rum (unflavoured) | 44 ml | 0 g |
| Dry white or red wine | 150 ml | 3–4 g |
| Brut champagne | 150 ml | 2–3 g |
| Light beer | 355 ml | 3–6 g |
| Regular beer | 355 ml | 10–15 g |
| Cider | 330 ml | 15–25 g |
| Margarita or mojito | one glass | 20–35 g |
Choosing a keto-friendly wine
Wine carbs come mostly from residual sugar left after fermentation, so dry matters more than red or white. USDA values for standard table wine are about 2.6 g of carbs per 100 ml for both red and white, or about 4 g per 150 ml glass. Sweet dessert wines run around 14 g per 100 ml, so a small glass carries about as much as a slice of bread.
- Lowest: brut or extra-brut sparkling wine, dry whites such as Sauvignon Blanc and Pinot Grigio, and dry reds such as Pinot Noir and Merlot.
- Higher: off-dry Riesling, rosé labelled "medium", Moscato, port, sherry and dessert wines.
- Labels: "brut nature" or "zero dosage" sparkling wine has the least added sugar.
How alcohol affects ketosis
Your body treats alcohol as a priority fuel and burns it before fat. Ketone production may continue, but fat burning slows until the alcohol is cleared. Drinking regularly is a common cause of stalls even when carbs stay low.
Tolerance drops
Many people on keto report feeling the effects of alcohol faster. With empty glycogen stores and lower fluid levels, drink more slowly, alternate with water, and never drive after drinking.
What to order
- Spirit with soda water and lime
- Dry wine, a single glass
- Spirit with diet mixer (check the mixer)
Avoid tonic water (it contains sugar), juice mixers, sweet liqueurs and cocktails with syrups.
Who should avoid alcohol entirely
Anyone taking diabetes medication that can cause low blood sugar, pregnant people, and anyone advised to avoid alcohol for medical reasons.
Frequently asked questions
Does alcohol kick you out of ketosis?
Zero-carb spirits usually do not end ketosis, but they pause fat burning while your body clears the alcohol. Sugary drinks can end ketosis.
What alcohol has no carbs?
Unflavoured spirits such as vodka, gin, whisky, tequila and rum contain essentially no carbohydrate.
This guide is general information for healthy adults, not medical advice. See our medical disclaimer.