You should increase Potassium levels in the blood by working on the same points as in the prevention of Potassium deficiency. You can ask your doctor as he may recommend Potassium supplements to increase its levels. Potassium supplements are available over the counter, and for most adults the recommended daily allowance is 3400 mg in male adults and 2600 in female adults.
Always ask your doctor before taking supplements, even if it is available over the counter. Potassium supplements can cause toxicity and should be closely monitored.
Potassium supplements may cause stomach upset, nausea, and vomiting.
It is better to increase Potassium levels by food intake because it will never cause Potassium toxicity, unlike supplements.