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Unsweetened Instant Coffee Calories
Low-calorie, unsweetened coffee
CALORIES
GI
POTASSIUM
FIBER
Unsweetened Instant Coffee Nutrition Facts
Selected: 100 g
353
KCAL / 100G
Carbs
75.4g
· 85%
Protein
12.2g
· 14%
Fat
0.5g
· 1%
Fiber
0g
Unsweetened Instant Coffee Vitamins & Minerals
Vitamins
B3
28mg · 175% DV
B2
0.2mg · 15% DV
B1
0.02mg · 2% DV
B5
0.1mg · 2% DV
Minerals
Potassium ⭐
3535mg · 104% DV
Magnesium
327mg · 78% DV
Manganese
1mg · 43% DV
Phosphorus
303mg · 43% DV
Unsweetened Instant Coffee Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
Is Unsweetened Instant Coffee Processed?
NOVA 3
Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
Does Unsweetened Instant Coffee Contain Allergens?
No known major allergens
Which Diets Is Unsweetened Instant Coffee Good For?
Vegan
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
Unsweetened Instant Coffee Fat Profile
SATURATED
0.2g
MONOUNSATURATED
0.02g
POLYUNSATURATED
0.21g
Omega 6:3 ratio 20:1
Above the ideal 4:1 (20:1).
Foods Similar to Unsweetened Instant Coffee
Unsweetened Instant Coffee — Frequently Asked Questions
How should unsweetened instant coffee be stored after opening?
Keep it tightly sealed in a cool, dry place away from light and steam. Moisture is the main reason it clumps and loses aroma, so storing it near the kettle or in the fridge is usually not ideal.
Why does unsweetened instant coffee sometimes upset my stomach?
Caffeine can stimulate stomach acid, and coffee may feel harsh for some people, especially on an empty stomach. Strong servings or multiple cups close together can make discomfort more likely.
Is unsweetened instant coffee better with water or milk?
That depends on what you want from it. Water gives a cleaner coffee taste, while milk or a fortified plant drink makes it smoother and can turn it into a more filling pairing when combined with protein.
Can I drink unsweetened instant coffee before a workout?
Many people use coffee before training for alertness and focus. If you are sensitive to caffeine, though, too much or taking it too close to exercise may leave you jittery rather than helping.
Can unsweetened instant coffee affect sleep if I drink it at night?
Yes, it can make it harder to fall asleep or reduce sleep quality, especially in caffeine-sensitive people. The effect varies a lot by person, so evening intake is worth watching.
Does unsweetened instant coffee dehydrate you?
Not in the dramatic way people often claim. It still contributes fluid, but large amounts may make some people urinate more often, so overall hydration still matters.
What is the main difference between instant coffee and brewed coffee?
The biggest differences are processing, convenience, and flavor. Instant coffee is made to dissolve quickly and is very practical, while brewed coffee is often preferred for a fresher, more complex taste.
Why does unsweetened instant coffee clump, and is it still safe to use?
Clumping usually happens because it has absorbed moisture from the air. If there is no mold, off smell, or obvious spoilage, it is often more of a quality issue than a safety one, though the flavor may be weaker.
Who should be careful with unsweetened instant coffee?
People who are pregnant, very sensitive to caffeine, prone to anxiety, have heart rhythm issues, or deal with reflux may need to limit it. It can also interact with the timing of some medicines, so regular medication users should be cautious.
Is unsweetened instant coffee unhealthy because it is a processed food?
Processed does not automatically mean unhealthy. Unsweetened instant coffee is different from sugary coffee mixes; what matters more is your total caffeine intake, portion habits, and what you add to the cup.
Have another question about Unsweetened Instant Coffee?
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Nutrition data compiled from USDA FoodData Central and scientific sources.