Soy Milk (sweetened)
Soy Milk (sweetened) is fine in moderation. Watch your portion size, especially during a flare. A typical 240 g serving has about 53 mg of purines, about 13% of a ~400 mg working daily target. It also carries about 5 g of fructose per serving, which raises uric acid on its own.
General information, not a substitute for advice from your doctor or dietitian.
PURINE NOTE: No published measurement exists for sweetened soy milk. The purine figure is plain soy milk's 21.9 mg/100g (Kaneko 2014, USDA Purine Database Table 2), and added sugar and water only dilute it. FRUCTOSE NOTE: Half of the 3.99 g/100g total sugars USDA FoodData Central reports for original soy milk, an upper bound.
This is ultra-processed. Beyond its purine content, that is linked to higher gout risk on its own. (UK Biobank 2024)
This purine value is inferred, not measured directly for this food. See the sources note below for how it was derived.
How much can I eat?
Added fructose raises uric acid on its own, so keep sugary foods and drinks small.
How we count fructose
This is the fructose, not the total sugar: it counts free fructose plus half of sucrose, so a sucrose-sweetened product carries roughly twice this much sugar overall.
Evidence: Ayoub-Charette et al., J Nutr 2021 (fructose by food source) · White et al., Am J Clin Nutr 2018 (whole apple vs. a fructose drink, matched dose)
Up to about 3 ¾ cups (915 g) keeps you under half a day's purines.
These are plant purines, which research links far more weakly to flares: the 53 mg here counts as roughly 16 mg toward your gout risk.
Portion size is what matters most here, and it’s easy to misjudge by eye. A kitchen scale makes it simple.
Shop a kitchen scale on AmazonHi, I'm Oliver. I built GoutSafe for us gouties, and links like this help cover the hosting, at no extra cost to you.
Why grade C
Added fructose raises uric acid as your body breaks it down, even when the purine number looks low.
Per 100 g and processing
Per 100 g (for comparison)
Low for gout (< 50 mg/100g).
Low for gout (< 3 g/100g).
Processing: NOVA 4 of 4. How processing affects the grade.
Diet is part of the picture, not all of it
For most people the body makes the majority of its own uric acid. Food contributes the smaller share. Eating well lowers your risk and helps you feel in control, but for many people diet alone does not bring uric acid down enough to stop flares. Medication often does the heavy lifting. Use these grades to make easier daily choices, and work with your doctor on the full plan.
Other forms of soy
The most common form of soy is first.
Soy Milk
Soy Protein Concentrate
Soy protein concentrate, produced by acid wash
Soy Sauce (shoyu)
Soy sauce made from soy and wheat (shoyu)
More from Dairy & Eggs
2% Milk
Milk, 2% fat
American Cheese
Butter
Cheddar Cheese
Chicken Egg
Egg, chicken, raw
How did soy milk (sweetened) go for you?
Reader experiences, not medical advice. The grade above comes from published data.