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Sparkling water with a lemon slice
Yes
it's keto

Sparkling water with a lemon slice

Drink

Also: sparkling mineral water and club soda with lemon

Sparkling water with a lemon slice is keto: it has ~0 g of net carbs per 1 glass (240 ml), within the keto diet's 5 g-per-serving limit.

Net carbs

0 g

per 1 glass (240 ml)

These are the carbs that count on keto: total carbs minus fiber.

With just 0.4 g of net carbs per glass, it's ideal for staying in ketosis.

Nutrition facts for sparkling water with a lemon slice

0 g
Fat
0 g
Protein
0.1 g
Fiber

Why sparkling water with a lemon slice is keto?

On keto the goal is to stay under ~5 g of net carbs per serving; sparkling water with a lemon slice has 0 g per 1 glass (240 ml) (0 g total − 0 g of fiber).

How much sparkling water with a lemon slice can I eat on keto?

To stay under 5 g of net carbs, the limit is ~3063 g of sparkling water with a lemon slice.

Related

See all: Bebidas keto

Source: nutritional estimate (USDA-style reference) · Confidence: high
Reviewed by the Ketorai team · Last updated: July 1, 2026 · How we assign the verdict
For information only. This does not replace advice from a health professional.