How Much Oxalate Is in Evening Primrose Oil?
mg oxalate
per serving
Serving: 1 serving (100 g)
Verdict: 🟢 Safe
Per 100g: 0 mg
Data: Harvard T.H. Chan SPH (2024)
What this means: Evening Primrose Oil is rated Safe (🟢). At 0 mg oxalate per serving, it's well under the 25 mg safety threshold. You can include it regularly in a kidney stone diet. Pair it with calcium-rich foods (dairy, fortified plant milks) for additional protection, and drink plenty of water throughout the day.
Among condiments, Evening Primrose Oil sits well below the category average of 8 mg. For context, 133 out of 141 condiments (94%) are rated 🟢 Safe (under 25 mg oxalate/serving). The average condiments in our database has 8 mg oxalate per serving — which means Evening Primrose Oil is 100% below the category norm. Within its specific category, Evening Primrose Oil 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 condiments rated Safe to compare within the same verdict level.
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. Applied to Evening Primrose Oil: 0 mg oxalate per 1 serving — Safe per Harvard (2024).
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. For context, Evening Primrose Oil measures 0 mg per 1 serving, rated Safe.
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. Applied to Evening Primrose Oil: 0 mg oxalate per 1 serving — Safe per Harvard (2024).