Treatment of chronic cough

How the chronic cough can be treated with herbs?

First: take coltsfoot ((Tussilago farfara) and drunk it as a tea in the morning and evening.
coltsfoot Tussilago farfara
Second: take ten grams of thyme, tilia leaves, guava and black seed, grind it all and put in a quarter pound of honey. Take one tablespoon after meals.

Third: regularly drink one cup of solution from incense tree, in the morning and evening. Put one teaspoon of the drink in a cup of water.
incenese tree resins