Fish such as salmon, cod, flounder, and sardines are good sources of potassium. Various other meats such as chicken and turkey along with almonds also contain potassium.
Vegetables including broccoli, tomatoes, and leafy green vegetables such as spinach, lettuce, and parsley contain potassium.
Over-the-counter potassium supplements provide 99 milligrams of potassium per tablet. It would require 35 tablets to meet the recommended daily allowance.
The most common symptom of potassium depletion is fatigue. Other symptoms of potassium deficiency include slow reflexes, muscle weakness, and EKG changes -- I would recommend you see your doctor before you start taking anything for it.