Last reviewed: 2026-09-03 • Editorial Standards

Bonito & Dried Bonito Flakes Ranked by Purine Content

Evidence-based comparison — data from USDA+ODS-NIH PURINE DATABASE Release 2 (March 2025)

Lowest Purine Bonito & Dried Bonito Flakes

#1tuna (bonito), raw211.2 mg
#2Bonito211.4 mg
#3bonito, dried492.9 mg
#4Katsuobushi (dried bonito)493.3 mg

Highest Purine Bonito & Dried Bonito Flakes

#4tuna (bonito), raw211.2 mg
#3Bonito211.4 mg
#2bonito, dried492.9 mg
#1Katsuobushi (dried bonito)493.3 mg

Category Average: 352.2 mg/100g

The average across 4 Bonito & Dried Bonito Flakes foods with lab-measured data. Foods below this average are better-than-typical choices within this category.

How to Use This Ranking

The purine ranking is sorted from lowest to highest. Rank #1 is the lowest-purine food in the category. Foods in the top half (above median) should be consumed with more awareness of portion and frequency. The difference between adjacent ranks varies: in some categories, rank #5 and #10 might be only 10 mg apart; in others, the gap can be 100+ mg. Always check the actual milligram value, not just the position. Rankings do not account for fructose or alcohol — use individual food pages for a complete risk assessment.

ACR 2020 Guideline Context

The American College of Rheumatology recommends that gout patients focus on purine awareness rather than complete food group elimination. Within any category, there is a wide purine range. The goal is to shift toward lower-purine choices within categories you already eat, rather than eliminating entire food groups. This ranking helps you identify which specific items to prioritize and which to limit.

Japanese guidelines recommend under 400 mg of total dietary purines per day. Using this ranking, you can estimate how much of budget each food uses per typical serving.

How This Comparison Is Built

Each item here is scored by a three-factor risk engine covering purines, fructose, and alcohol. Purine values draw on the USDA+ODS-NIH PURINE DATABASE Release 2 (March 2025) and Kaneko et al. (Biol Pharm Bull 37(5):709-721, 2014, PMID: 24553148); fructose comes from USDA SR28 tables. Classification uses ACR 2020 thresholds — Safe under 50 mg purine and 2 g fructose with no alcohol, Moderate in between, Avoid above, or when alcohol is present. Each food page labels its data quality as T1 (lab-measured), T2 (measured plus consensus), or T3 (category estimate).

This comparison is provided for informational purposes only and does not constitute medical advice. Individual tolerance to purines and fructose varies. Consult a healthcare professional for personalized dietary guidance. Last reviewed: 2026-09-03.

Frequently Asked Questions

Are bonito flakes bad for gout?
Bonito flakes (katsuobushi) are very high in purines because drying concentrates them. Among 4 bonito entries with measured values, dried bonito reaches about 493.3 mg/100g — one of the highest purine foods in our database. Fresh bonito is high too at about 211.2 mg/100g. Dashi made from bonito flakes is a hidden purine source in Japanese cooking.
Which bonito is lowest in purines?
Fresh bonito (skipjack tuna) measures lowest in our database at about 211.2 to 211.4 mg/100g — still high at over 200 mg/100g. Dried katsuobushi flakes are more than double that at 493.3 to 492.9 mg/100g. There is no low-purine bonito; it belongs in the limit-or-avoid column for gout.
Can I eat bonito with gout?
Fresh bonito is best limited to small servings, and dried bonito flakes are best used very sparingly. Our database measures fresh bonito around 211.4 mg/100g and dried flakes near 493.3 mg/100g. Since bonito flakes are used as a seasoning (dashi, okonomiyaki topping), the small amounts on food may be manageable, but a dashi-heavy meal adds up.