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How Much Oxalate Is in Oyster sauce?

Harvard's 2024 analysis found 1 mg of oxalate in one serving of Oyster sauce (1 tbsp). At the 100-gram level, that's 0 mg. This puts Oyster sauce in the Safe range (under 25 mg per serving). Keep in mind: oxalate varies by growing conditions, preparation method, and variety — but Harvard's measurement is the most reliable reference available.
✓ Lab-Verified Data Based on Harvard T.H. Chan SPH oxalate data (2024) and NKF/AUA dietary guidelines.
1
mg oxalate
per serving
Food: Oyster sauce
Serving: 1 tbsp (18 g)
Verdict: 🟢 Safe
Per 100g: 0 mg
Data: Harvard T.H. Chan SPH (2024)
🔄 Lower-Oxalate Alternatives
🟢 HydroEye Soft Gels
0 mg / serving
🟢 Salmon Atlantic
0 mg / serving
🟢 wild
0 mg / serving
🟢 Tuna
0 mg / serving
💡 What This Means for Your Diet

In practical terms, Oyster sauce is a low-risk food for kidney stone patients. Its 1 mg oxalate per serving stays under the 25 mg line, so it can appear in your regular rotation without extra calculation. As always, staying hydrated and getting dietary calcium supports stone prevention.

📊 How Oyster sauce Compares

Among seafood, Oyster sauce sits below the category average of 2 mg. For context, 55 out of 55 seafood (100%) are rated 🟢 Safe (under 25 mg oxalate/serving). The average seafood in our database has 2 mg oxalate per serving — which means Oyster sauce is 36% below the category norm. Within its specific category, Oyster sauce ranks among the lower-oxalate options. 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 seafood rated Safe to compare within the same verdict level.

❓ Related Questions

Why does oxalate per 100g matter?

Normalizing to 100 grams removes serving-size differences, so you can judge which food is genuinely denser in oxalate. It matters most when you eat a bigger or smaller portion than the listed serving. Oyster sauce comes in at 1 mg oxalate per 1 tbsp (Safe) in the measured database.

How accurate is the oxalate measurement?

The measurements use ion chromatography, the accepted reference method for oxalate. That means real lab values for each food rather than inferred numbers. Some natural variation exists between samples, but this is the strongest published data set. Applied to Oyster sauce: 1 mg oxalate per 1 tbsp — Safe per Harvard (2024).

How does this compare to other foods?

Foods under 25 mg per serving are rated Safe. Foods between 25-99 mg are Caution. 100+ mg is Avoid. Check the food's category page on OxalateWatch to see how it compares to similar foods. Oyster sauce comes in at 1 mg oxalate per 1 tbsp (Safe) in the measured database.

Oyster sauce full page 🟢 Safe foods Safe foods
This is dietary reference information, NOT medical advice. Talk to your doctor or a registered dietitian before changing your diet. Oxalate tolerance varies by person, stone type, and medication.