Drugs for Cough and Bronchial asthma

Q1. Cough, occurs d/t, useless, useful,

Q2. Commonest cause of acute Cough

Q3. How do pharyngeal demulcents work.

Q4. Expectoration vs expectorants

Q5. Sodium and potassium iodide / citrate , guaifenesin, vasaka and tolu balsam mechanism of action. Vs Ammonium salts, why only Guaifenesin is marketed by US FDS

4mg/5ml elixir meaning 

The term "4mg/5ml elixir" refers to the concentration of a liquid medication, usually intended for oral use. Here's the breakdown:

4mg: This is the amount of the active ingredient (the medication) in the solution.

5ml: This is the volume of the solution that contains the stated amount of the active ingredient.

Elixir: This indicates that the medication is in a liquid form, typically with a sweetened and flavored base to make it easier to take.

So, in this case, 4mg of the active ingredient is present in every 5ml of the liquid medication. If a doctor prescribes a specific dose (e.g., 8mg), you would calculate the volume needed accordingly (e.g., 10ml).