What Are the Four Precautions for Drinking Soybean Milk?

Nov 07, 2025 Source: Cainiu Health
Dr. Yu Yongchao
Introduction
There is no such saying as "four taboos of drinking soy milk." The precautions for drinking soy milk include avoiding consumption if it's not fully cooked, refraining during acute gout attacks, not drinking large amounts on an empty stomach, avoiding intake with certain medications, and limiting consumption for individuals with impaired kidney function. Following these guidelines helps prevent physical discomfort and allows soy milk's nutritional benefits to be better utilized. Raw soy milk contains harmful substances such as saponins and trypsin inhibitors.

There is no such thing as "four taboos of drinking soy milk." The precautions for drinking soy milk include avoiding raw or undercooked soy milk, refraining during acute gout attacks, not consuming large amounts on an empty stomach, avoiding concurrent intake with certain medications, and limiting consumption in individuals with impaired kidney function. Following these guidelines helps prevent discomfort and allows better utilization of soy milk's nutritional benefits.

1. Do not drink if not fully cooked: Raw soy milk contains harmful substances such as saponins and trypsin inhibitors. Drinking it uncooked can irritate the gastrointestinal tract, causing nausea, vomiting, and diarrhea. It should be boiled and then simmered for an additional 5–10 minutes to ensure safety.

2. Avoid during acute gout attacks: Soy milk is a moderate-purine beverage. Consuming it during an acute gout attack may increase uric acid levels, worsening symptoms such as joint redness and pain. Small amounts may be acceptable during remission periods.

3. Avoid drinking large amounts on an empty stomach: On an empty stomach, the protein in soy milk is more likely to be converted into energy rather than being properly absorbed, reducing its nutritional benefit. It may also irritate the gastric mucosa, leading to bloating or acid reflux. It is recommended to consume soy milk with staple foods such as bread or steamed buns.

4. Avoid taking with certain medications: Soy milk may interfere with the absorption of medications such as thyroid hormones and tetracycline antibiotics, reducing their effectiveness. A gap of at least 1–2 hours should be maintained between taking these medications and drinking soy milk.

5. Limit intake for those with kidney dysfunction: The plant proteins in soy milk increase the metabolic burden on the kidneys. Excessive consumption by individuals with kidney impairment may worsen their condition. Intake should be controlled under the guidance of a doctor or dietitian.

When preparing soy milk, consider adding walnuts or sesame seeds to enhance nutrition, and avoid excessive sugar. Once opened, cooked soy milk should be refrigerated and consumed within 24 hours. Reheat thoroughly before drinking again to ensure safety.