Dining Out and Travel Food Guide: How to Look Up Ingredients, Ask Restaurants and Order — Dialysis and Transplant Patients Addressed Separately

What this is: not another "foods you cannot eat" list, but a guide to the three practical problems of eating away from home — how to look it up, how to ask, how to order. Throughout, hemodialysis / peritoneal dialysis patients and kidney transplant recipients are addressed separately, because their restrictions point in different directions. Your personal limits should follow your care team's advice.

First: dialysis and transplant diets are not the same

In one line: the dialysis patient's enemies are potassium, phosphorus, salt and fluid; the transplant patient's are bacteria, grapefruit and salt.

1. How to look it up: nutrient databases by country

Universal databases (English interface)

When nothing is labelled: estimate from the recipe

1. Sauces: about 70% of sodium in Asian food comes from sauces (soy, fish sauce, oyster sauce, miso, chilli bean paste, kimchi). Sauce on the side ≈ half the sodium.
2. Soup: ramen, pho, hot pot and miso broth concentrate sodium and leached potassium. Eat the solids, leave the broth is the single most effective move.
3. Processed: ham, sausage, fish cake, cheese and instant noodles contain phosphate additives (almost 100% absorbed). Look for "phosphate", "E338–E452".
4. Portions: Western servings are often 1.5–2× Asian ones; decide in advance to eat half and box half.

Quick table: hazards and safe picks by cuisine

2. How to ask: restaurant phrase cards

These are also in our Medical Phrase Cards ("Restaurant ordering card") for full-screen display.

Three universal sentences

Extra for dialysis patients

Extra for transplant recipients

How to ask so you get a real answer

• Ask about ingredients, not concepts: "Is there tomato in it?" works a hundred times better than "Is this high in potassium?" — staff do not know potassium.
• Ask whether the sauce can come on the side, not "can it be less salty".
• Ask how it is cooked (steamed / grilled / fried / braised) — easier to judge sodium than from ingredients.
• In Japan and Korea, showing a phone card beats speaking; in the West, "I have a medical dietary restriction" gets taken seriously.

3. How to eat: practical strategies on the road

Dialysis patients

1. Dialysis day vs off day: schedule restaurant meals on or right after dialysis (lowest potassium); the two-day weekend gap (HD) is the most conservative time.
2. Carry phosphate binders in a pocket box; if you forget, go light on cheese, processed meat and cola.
3. Fluids: thirst rises when travelling (walking, sun, salty food). Small bottles, ice chips, sugar-free gum; weigh yourself at the same time daily.
4. Hotel breakfast: white toast, eggs, a little plain yoghurt, a small portion of fruit (apple, grapes, pineapple); skip ham, cheese, juice, bananas.
5. Convenience-store rescue (Japan / Taiwan / Korea): plain rice balls (check salt), boiled eggs, unsweetened tea, water; skip oden broth, instant noodles, juice.

Transplant recipients

1. Food safety first: fully cooked, freshly made, served hot. Avoid salad bars, long-standing buffets, raw street food, unpasteurised dairy, raw egg, raw fish, raw meat.
2. Grapefruit family: Japanese "yuzu" is a different citrus (Citrus junos) and seasoning amounts are low-risk, but ponzu may contain grapefruit or pomelo juice — ask; Thai and Vietnamese dishes often use star fruit as garnish or in salads.
3. Water: in Southeast / South Asia and parts of Latin America drink bottled water only, no ice; brush teeth with bottled water.
4. Dose timing: discuss tacrolimus timing across time zones with your team; keep the same food relationship (fasting / after meals) as at home.
5. Alcohol: avoid around extended-release tacrolimus (Advagraf / Envarsus); keep to modest social amounts otherwise.

For everyone

• Before departure, ask your dietitian for a personal "red / amber / green" list based on your own labs — more useful than any generic list.
• Photograph each meal and show your dietitian afterwards; it beats memory.
• Do not abandon every rule because you are abroad, and do not eat nothing out of fear — the trip is the reward for a year of careful control.

References

1. Ikizler TA, et al. KDOQI Clinical Practice Guideline for Nutrition in CKD: 2020 Update. Am J Kidney Dis. 2020;76(3 Suppl 1):S1-S107.
2. KDIGO Transplant Work Group. KDIGO Clinical Practice Guideline for the Care of Kidney Transplant Recipients. Am J Transplant. 2009;9(Suppl 3):S1-S155 (diet and food-safety sections).
3. Avery RK, Michaels MG; AST ID Community of Practice. Strategies for safe living following solid organ transplantation. Clin Transplant. 2019;33(9):e13519.
4. Neto MM, et al. Intoxication by star fruit in 32 uraemic patients. Nephrol Dial Transplant. 2003;18(1):120-125.
5. Bailey DG, et al. Grapefruit–medication interactions. CMAJ. 2013;185(4):309-316.
6. Picard K. Potassium additives and bioavailability. J Ren Nutr. 2019;29(4):350-353.
7. U.S. Department of Agriculture. FoodData Central. https://fdc.nal.usda.gov/
8. Open Food Facts. https://world.openfoodfacts.org/
9. Taiwan Food and Drug Administration. Food Nutrition Database. https://consumer.fda.gov.tw/Food/TFND.aspx
10. MEXT Japan. Standard Tables of Food Composition in Japan (8th revised).

This article compiles publicly available medical information for educational purposes only and is not medical advice. For any health concern, please consult a qualified healthcare professional.