<s>[INST] Hello. I ve been having body aches, shortness of breath and coughing since Sunday. I have had walking pnumonia and bronchitis in the past couple of years. I m currently taking PVK 500 I got from a friend. I started the dosage last night and took another this morning and again after lunch. I don t feel any different. What should I do? [/INST] Thanks for your question on Chat Doctor. I can understand your situation and problem. The most common cause for bronchitis is viral infection. And viral infection is common cause for generalized weakness and fatigue. Viral infections are self limiting in nature. But bronchitis needs proper treatment. So better to consult pulmonologist and start inhaled bronchodilators and antihistamine Chat Doctor.   </s>