Is Star Fruit Juice (Star Fruit 2) Safe for Kidney Stones?
mg oxalate
per serving
Serving: 1 cup (240 g)
Verdict: 🔴 Avoid
Per 100g: 202 mg
Data: Harvard T.H. Chan SPH (2024)
What this means: Star Fruit Juice (Star Fruit 2) is rated Avoid (🔴). At 485 mg oxalate per serving, it exceeds the 100 mg threshold. Kidney stone patients should limit or avoid this food. If you do eat it, keep portions very small, pair it with calcium, and drink extra water. Check the full food page for safer alternatives.
Among beverages, Star Fruit Juice (Star Fruit 2) sits well above the category average of 40 mg. For context, 82 out of 92 beverages (89%) are rated 🟢 Safe (under 25 mg oxalate/serving). The average beverages in our database has 40 mg oxalate per serving — which means Star Fruit Juice (Star Fruit 2) is 1123% above the category norm. Within its specific category, Star Fruit Juice (Star Fruit 2) ranks on the higher end for oxalate. This context matters because two 'Safe' foods can have very different oxalate levels — one might have 5 mg while another has 24 mg. Both are Safe, but the first gives you more dietary flexibility. Browse all beverages rated Avoid to compare within the same verdict level.
Why does the safe threshold matter?
The 25 mg line is the reference point clinicians use to separate everyday foods from ones that need caution. Every value on this page traces back to Harvard's 2024 lab analysis, so the threshold is applied to measured data rather than estimates. Applied to Star Fruit Juice (Star Fruit 2): 485 mg oxalate per 1 cup — Avoid per Harvard (2024).
Can I eat this food every day?
For Safe foods (under 25 mg/serving), daily use is generally fine. Caution and Avoid foods work better as occasional items — rotate them with safer options so no single high-oxalate food becomes a habit. For context, Star Fruit Juice (Star Fruit 2) measures 485 mg per 1 cup, rated Avoid.
Where does the oxalate data come from?
Harvard T.H. Chan School of Public Health (2024) via the OHF database. These are direct laboratory measurements — the most reliable oxalate data available for food. For Star Fruit Juice (Star Fruit 2), the measured oxalate value is 485 mg per 1 cup (Avoid).
Should I also check sodium and calcium?
Definitely. Oxalate is only part of the story — high sodium raises calcium in urine, and dietary calcium (from food, not pills) binds oxalate in the gut. The food's main page lists both, so it's worth checking before you plan around it. Star Fruit Juice (Star Fruit 2) comes in at 485 mg oxalate per 1 cup (Avoid) in the measured database.