Normally, your blood potassium level is 3.6 to 5.2mmol/L . A very low potassium level (less than 2.5 mmol/L) can be life-threatening and may require infusion.
Usually dehydration,diarrhea,vomiting,water pills,laxative use cause low potassium levels.
As you have no vomiting,diarrhea and history of medications use then such low level can be caused due to low potassium in your diet.
As you have already taken potassium rich diet and still feel weakness then other causes like Viral infection,Thyroid dysfunction,adrenal fatigue,Gastroesophageal reflux should be ruled out.
You should try OTC Prilosec.
Also try Oral rehydration solution.
Continue to eat nutritious diet.
And if your symptoms'll persist then consult your doctor for further evaluation and management.
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