Absolutely avoid foods that encourage poor kidney function e.g. tea, coffee and alcohol.
Avoid salt, unless you are told not to specifically by a herbal practitioner.
Include plenty of leeks, cucumber, parsley, celery and celery seeds.
Amongst fruits choices: melons, peaches, pineapples and bilberries.
B vitamins are vital. Consume dark green vegetables and 'Chlorella' algae. Superfood contains all these.
For severe oedema seek professional advice.