Ambroxol 
Uses
Ambroxol is used in the treatment of allergic disorders and the symptoms it can cause
How it Works
Ambroxol is used known as an antihistamine, it works by blocking histamine receptors and increasing the breakdown of mucus.Ambroxol works by selectively inhibiting the H1 histamine receptors therefore preventing histamine from acting on its receptors Ambroxol helps to alleviate the symptoms caused by hay fever or other allergies (such as a runny nose and watery eyes). Ambroxol has secretolytic properties, and it works by reducing the viscosity (thickness) of mucus, allowing for more of it to be removed from the body.
Common Side effects
Patients who take Ambroxol may suffer from such side effects;
Headache
Digestive upset
Dry feeling inside the mouth
Discomfort affecting the throat
Feelings of fatigue or somnolence
Constipation,
Diarrhoea,
Difficulty in urination,
Heartburn,
Itching,
Nausea,
Rash
Doxofylline
Uses
Doxofylline is used in the treatment of chronic obstructive pulmonary disorder (copd) and asthma.
How it Works
Doxofylline works by relaxing the muscles in the walls of the airways in the lungs. This then opens the airways making breathing easier.
Common Side effects
Some of the potential side effects of Doxofylline include the symptoms below;
Nausea,
Abdominal upset,
Vomiting,
Headache,
Restlessness