Short answer: Guava is a tropical fruit with a large vitamin C contribution and useful fiber. One USDA reference fruit, with 1.9 oz (55 g) edible weight, supplies about 37 calories, 125 mg vitamin C and 3 g fiber. Guava-leaf tea is a different preparation and shouldn’t inherit the fruit’s nutrition or be used instead of medical care.
Guava nutrition makes a strong case for the fruit without needing exaggerated health claims. You can eat it fresh or use it in a dish, choosing the variety and texture you enjoy.
Common guava is Psidium guajava. Varieties differ in flesh color, aroma, sweetness and seediness. A small USDA reference fruit doesn’t describe the size of every guava in a shop, so edible weight matters when you compare portions.
Raw guava at a glance
- Calories
- 68 per 3.5 oz (100 g); about 37 per reference fruit (55 g).
- Leading nutrients per reference fruit
- Vitamin C, about 139% DV; copper, 14%; fiber, 11%.
- Fiber
- About 3 g per reference fruit.
- Plant
- Psidium guajava; flesh color varies by cultivar.
- Main distinction
- Whole fruit, juice, paste and leaf tea need separate information.
Guava nutrition facts
This table describes USDA common guavas, raw. The reference fruit is 1.9 oz (55 g) of edible food. Use a matching record or label if your preparation removes seeds, strains pulp or adds other ingredients.
| Nutrient | Per 3.5 oz (100 g) | Per 1 reference fruit (55 g) | % DV per 1 reference fruit |
|---|---|---|---|
| Calories | 68 | 37 | – |
| Protein | 2.5 g | 1.4 g | 3% |
| Total fat | 0.95 g | 0.52 g | <1% |
| Saturated fat | 0.27 g | 0.15 g | <1% |
| Cholesterol | 0 mg | 0 mg | 0% |
| Carbohydrates | 14 g | 7.9 g | 3% |
| Fiber | 5.4 g | 3 g | 11% |
| Total sugars | 8.9 g | 4.9 g | – |
| Sodium | 2 mg | 1.1 mg | <1% |
| Potassium | 417 mg | 229 mg | 5% |
| Calcium | 18 mg | 9.9 mg | <1% |
| Iron | 0.26 mg | 0.14 mg | <1% |
| Magnesium | 22 mg | 12 mg | 3% |
| Phosphorus | 40 mg | 22 mg | 2% |
| Zinc | 0.23 mg | 0.13 mg | 1% |
| Copper | 0.23 mg | 0.13 mg | 14% |
| Manganese | 0.15 mg | 0.08 mg | 4% |
| Selenium | 0.6 mcg | 0.33 mcg | <1% |
| Vitamin A (RAE) | 31 mcg | 17 mcg | 2% |
| Vitamin C | 228 mg | 125 mg | 139% |
| Vitamin E | 0.73 mg | 0.4 mg | 3% |
| Vitamin K | 2.6 mcg | 1.4 mcg | 1% |
| Thiamin (B1) | 0.07 mg | 0.04 mg | 3% |
| Riboflavin (B2) | 0.04 mg | 0.02 mg | 2% |
| Niacin (B3) | 1.1 mg | 0.59 mg | 4% |
| Pantothenic acid (B5) | 0.45 mg | 0.25 mg | 5% |
| Vitamin B6 | 0.11 mg | 0.06 mg | 4% |
| Folate (DFE) | 49 mcg | 27 mcg | 7% |
| Choline | 7.6 mg | 4.2 mg | <1% |
Source: USDA FoodData Central: Guavas, common, raw (FDC ID 173044); official SR Legacy download. % Daily Value (DV) uses FDA values for a 2,000-calorie diet.
The database gives 5.8 oz (165 g) as a cup measure. That amount would supply about 112 calories, 8.9 g fiber and 376 mg vitamin C. It is three times the weight of the reference fruit, not a contradiction between two nutrition sources.
For a large guava, weigh the edible amount rather than assuming it equals one reference fruit. Purchase weight, a fruit count and a prepared serving aren’t always the same thing.
Vitamin C figures are useful averages. Variety, growing conditions and handling can affect the amount in your fruit. Use the table for reasonable planning rather than assuming every piece contains the exact same quantity.
Guava benefits: what is well supported?
The main benefits are measured nutrient contributions. Whole-food research is worth discussing, but it doesn’t turn the fruit into a medicine.
Supplies substantial vitamin C Strong evidence
The reference fruit supplies more than the FDA Daily Value for vitamin C. NIH ODS identifies vitamin C’s roles in collagen formation and normal immune function, and its ability to help absorb iron from plant foods.
This makes guava a useful choice when you want more vitamin C foods. It doesn’t mean you need several fruits to “boost” immunity or that a high intake guarantees fewer infections.
Adds fiber for normal bowel function Strong evidence
About 3 g fiber in one reference fruit contributes roughly 11% of the FDA Daily Value. NIDDK recommends adequate fiber, increased gradually, for bowel health.
Choose an amount you tolerate and use a variety of fiber foods. A large sudden increase can be uncomfortable, and guava isn’t a substitute for assessment of persistent or severe digestive symptoms.
Provides some potassium Strong evidence
A reference fruit supplies about 229 mg potassium, around 5% of the FDA Daily Value. NIH ODS describes potassium as necessary for normal cell, nerve and muscle function.
This is a contribution to your overall intake, not a guava-specific blood-pressure prescription. People with prescribed potassium restrictions should use their clinical plan for the portion.
Whole-diet trial results need context Moderate evidence
Singh and colleagues conducted a 12-week randomized study involving 120 people with hypertension. A guava-focused dietary approach was associated with favorable blood-pressure and lipid changes.
However, the intervention also changed saturated fat, total fat, fiber and other nutrient intakes. We can’t separate a special guava effect from those wider dietary changes. It doesn’t establish that a normal fruit portion produces the study’s result on its own.
What the 1992 food trial actually tested
- Who
- 120 people with essential hypertension, assigned to two groups.
- Duration
- 12 weeks.
- Approach
- Adding guava before meals as part of dietary change.
- Limit
- The overall nutrient pattern changed, so the fruit’s independent effect isn’t isolated.
This supports interest in food patterns rather than a recommendation to replace blood-pressure or cholesterol care with guava.
What about guava leaves and guava-leaf tea?
Leaves are a different plant part from the fruit. A cup of leaf tea doesn’t contain the same nutrients as the raw fruit in our table.
Deguchi and colleagues’ 1998 study included laboratory enzyme work, mice and a human guava-leaf tea experiment. It reported a lower after-meal glucose rise in a subgroup of participants. The researchers were affiliated with Yakult, which developed guava-leaf products.
Results don’t establish that a homemade tea has a predictable effect or a safe therapeutic amount. The extract, processing, amount and participants matter. Don’t use guava leaves to replace diabetes treatment or assume that more concentrated tea is better.
If a seller cites a leaf study to promote fruit juice, the product doesn’t match the evidence. Ask which plant part was tested and how the advertised preparation compares. Our editorial policy explains why that distinction matters.
Who should be careful
Fruit and leaf products need different decisions
- Diabetes medicines: discuss leaf teas or extracts used specifically for glucose control with your clinician or pharmacist. Keep prescribed care and monitoring.
- A potassium restriction: use the edible portion and your clinical plan to judge how guava fits.
- Sensitive digestion: introduce fiber gradually and choose a portion that is comfortable.
- Allergy: avoid a known trigger and check ingredients in mixed fruit products.
- Children or swallowing difficulties: prepare an appropriate texture. Hard seeds or firm pieces may need individual consideration.
- Pregnancy or breastfeeding: don’t infer the safety of concentrated leaf products from ordinary fruit eating.
NCCIH advises against substituting unproven products for diabetes care. The normal food question is how a portion fits your meals; therapeutic use of a leaf product is a different decision.
How to choose guava
Choose according to the variety and the texture you want. A firm white guava and a soft aromatic pink guava can both be intended for eating, so one ripeness rule doesn’t fit every type.
University of Florida describes pink or red guava for fresh use as often harvested when the peel turns light green to yellow, then allowed to soften. Some white varieties are eaten firmer, before the peel becomes fully yellow.
Ask the seller how that variety is usually eaten. Check for visible spoilage, leaks or major damage. Buy a small amount first if the aroma or seed texture is new to you.
For frozen pulp, read the ingredients and serving definition. For guava paste, jam or nectar, expect a product with its own formulation and label. The fruit’s name doesn’t tell you the added-sugar amount.
How to prepare and eat guava
Wash the fruit, trim unsuitable parts and cut it for the meal you are making. Check the texture and seediness before serving someone who needs modified food.
FDA recommends washing produce under running water rather than using soap or detergent. Use clean hands, utensils and a stable board. Washing before cutting helps avoid transferring contamination from the outside.
Try a piece plain first. You can then decide whether you want slices, smaller chunks or a softer preparation. Different cultivars can feel quite different in the mouth, so don’t assume an unfamiliar fruit must be prepared exactly like another variety.
Tip: Prepare one fruit before cutting the whole purchase. You can judge ripeness, seed texture and the size of portion you actually want.
Use suitable pieces with a meal or add them to a dish you already enjoy. If you strain a puree or remove part of the fruit, use matching information when accurate nutrient tracking matters. Don’t keep the original fiber total automatically.
Guava fruit vs juice, nectar and paste
Choose the entry that matches the preparation. Processing can remove fiber or introduce sweeteners and other ingredients.
| Form | Useful question | Best information |
|---|---|---|
| Raw fruit. | How much edible fruit am I eating? | A matching raw-food entry. |
| Juice or nectar. | Is it diluted, strained or sweetened? | The current label. |
| Paste or jam. | What ingredients and serving weight are used? | The recipe or product label. |
| Leaf tea. | Which plant part and preparation is it? | Product-specific information, not fruit data. |
FDA’s added-sugars guidance distinguishes naturally present sugars from sweeteners added during manufacture. Read both the ingredient list and Nutrition Facts panel, then include anything you add at home.
How to store guava
Handle according to the variety and ripeness. University of Florida gives a refrigerator guideline of five to seven days for ripe or green guava, with starting condition affecting quality.
Keep prepared fruit covered and cold. FoodSafety.gov recommends refrigerating perishable food within two hours, or one hour above 90°F (32°C), and keeping the refrigerator at 40°F (4°C) or below.
For a frozen pack or opened commercial product, follow the label’s instructions. Keep the name and opening date with the container if you transfer it. Check the food before using it rather than relying only on the calendar.
Check your portion and food form. A large guava, a reference fruit and a sweetened drink need different calculations.
Explore fruit guides.
More guides you may find useful: fruits high in vitamin C.
How to choose and eat guava
Ripe guavas give slightly when pressed and have a strong, sweet, musky smell. Their skin turns from bright green to yellow-green or yellow, depending on the variety. Firm guavas ripen at room temperature in two to three days; once ripe, refrigerate them and eat them within about four days. You can eat the whole fruit, including the thin skin and the small hard seeds, which add fiber. Pink-fleshed guavas tend to be sweeter, while white-fleshed varieties are often more tart. Guava is delicious sliced with a pinch of chili and salt, blended into juice, or cooked into paste and jam.
Guava FAQ
Is every guava the size of the USDA reference fruit?
No. The record uses a 55 g edible reference fruit. Weigh your prepared portion if size differs substantially.
Does high vitamin C mean I need several guavas daily?
No. One reference fruit already supplies a substantial amount. Choose a varied diet rather than chasing the largest nutrient total.
Can I use fruit nutrition for guava-leaf tea?
No. It is a different plant part and preparation, so the raw-fruit table doesn’t apply.
Is white guava always unripe?
No. Flesh color depends on cultivar, and some white varieties are eaten firm. Ask about the variety and intended eating stage.
Sources
- USDA FoodData Central: Guavas, common, raw, FDC 173044; official SR Legacy data and portions.
- USDA official downloadable data.
- University of Florida IFAS: Guava types, ripeness and storage.
- Singh et al. (1992). Guava-containing dietary intervention in people with hypertension.
- Deguchi et al. (1998). Guava leaf extract, animal experiments and human after-meal measurements.
- NIH ODS: Vitamin C.
- NIH ODS: Potassium.
- NIDDK: Dietary fiber.
- NCCIH: Diabetes and supplements.
- FDA: Added sugars.
- FDA: Produce preparation.
- FoodSafety.gov: Cooling and refrigeration.