Thanks for your question on Health Care Magic.
I can understand your situation and problem.
Post renal transplant,
lung infection and
bronchitis are very common due to low immunity.
And both of these cause similar symptoms.
So better to
consult pulmonologist and get done clinical examination of respiratory system, chest
x ray to rule out lung infection and PFT (Pulmonary Function Test) for the diagnosis of bronchitis.
You may need antibiotics, antihistamines drugs with inhaled bronchodilators and inhaled corticosteroid (ICS).
Since all these drugs are prescribed medicines, you need doctor 's prescription for them.
So consult pulmonologist, first diagnose yourself and then start appropriate treatment.
Hope I have solved your query.
Wish you good health. Thanks.