Does Diet Coke Have Caffeine?

Most people think it's caffeine-free—but it’s not. Let’s uncover the truth in 10 quick slides.

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Yes, It Does!

A 12 oz Diet Coke has 46 mg of caffeine—more than regular Coca-Cola.

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How Does It Compare to Coffee?

One cup of coffee has 2–3x more caffeine than Diet Coke. Coffee: ~140 mg. Diet Coke: 46 mg.

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What About Caffeine-Free Diet Coke?

Yes, it exists—and it has zero caffeine. Look for the gold label.

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Safe for Daily Use?

1–2 cans per day is safe for most adults, but moderation is key due to caffeine and artificial sweeteners.

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Can It Mess with Sleep?

Yes. Avoid it 4–6 hours before bedtime to prevent sleep issues.

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What If You're Sensitive?

If you have anxiety or heart issues, caffeine in Diet Coke may not be ideal.

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Diet Coke vs Coke

Diet Coke = more caffeine, less sugar. Coke = less caffeine, more sugar. Choose based on your needs.

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Want a Healthier Swap?

Try sparkling water, herbal iced tea, or Caffeine-Free Diet Coke for a better pick.

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Don’t miss the full breakdown, myths, facts, and health tips about Diet Coke caffeine.

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