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Grapefruit-infused water
✓
Yes
it's keto

Grapefruit-infused water

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Also: grapefruit water and grapefruit-flavored water

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Grapefruit-infused water is keto: it has ~2 g of net carbs per 1 glass (250 ml), within the keto diet's 5 g-per-serving limit.

Net carbs

2 g

per 1 glass (250 ml)

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

It has about 2.7 g of net carbs per glass, keto-friendly as long as you only use the flavor from a few slices and not a lot of juice.

Nutrition facts for grapefruit-infused water

0 g
Fat
0.2 g
Protein
0.3 g
Fiber

Why grapefruit-infused water is keto?

On keto the goal is to stay under ~5 g of net carbs per serving; grapefruit-infused water has 2 g per 1 glass (250 ml) (3 g total − 0 g of fiber).

How much grapefruit-infused water can I eat on keto?

To stay under 5 g of net carbs, the limit is ~463 g of grapefruit-infused water.

Related

Diet soda ✓Yes
Diet soda
0 g net / 1 glass (240 ml)
Sparkling water ✓Yes
Sparkling water
0 g net / 1 glass
Cortado ✓Yes
Cortado
1 g net / 1 small cup (about 75 ml)
Water ✓Yes
Water
0 g net / 1 glass
Coffee ✓Yes
Coffee
0 g net / 1 cup
Almond milk ✓Yes
Almond milk
0 g net / 1 glass (240 ml)

See all: Bebidas keto

Source: nutritional estimate (USDA-style reference) · Confidence: medium
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.

Something off? Let us know.

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