Answer: At 4.9 g of net carbs per serving, guava is one of the few keto-compatible fruits.
Each serving of guava (1 guava, common) contains 4.9 g of net carbs. That's a sizeable amount, but guava is still one of the most keto-friendly fruits you can find.
Though fresh guava fits the keto diet, canned or dried guava does not. Packaged guava contains tons of added sugar that manufacturers use as a preservative.
Guava contains 140% of your daily value of vitamin C, an essential antioxidant that can help prevent cardiovascular disease.