Effectiveness
Works quickly and effectively, and without side effects. All ingredients are 100% natural.

Active Ingredients:
Carbo Vegetabilis 30c, Arsenicum Album 30c, Phosphorus 30c, Blatta Orientalis 30c. Provides relief from lung congestion.

Other Ingredients:
Hoelen - Balances tissue fluids and strengthens respiratory membranes.
Dong Quai - Acts as a tonic and blood building agent.
Ophiopogon - Balances tissue fluids and strengthens respiratory membranes.
Scute - Headache pain relief.
Platycodon - Strengthens the immune system and removes mucus accumulations.
Citrus - Cleanses the lungs and circulatory system.
Morus Root - Enhances tissue repair.
Fritillary - Enhances tissue repair.
Asparagus - Helps control tissue inflammation.
Almonds - Moistens lungs and controls coughing.
Gardenia - Relieves congestion and enhances liver function.
Schizandra - Normalizes mucus secreting cells.
Licorice - Supports the adrenal glands.

Other information: Contains no corn, dairy, soy, wheat, yeast or animal products.

Summary
Drugs work only on symptoms and do nothing to restore the body to its normal healthy state. As you can see from the description of the ingredients in ClearLungs, they work on the cause of lung congestion by restoring and supporting normal lung function and metabolic activity, through reducing fluids, aiding in tissue repair, controlling inflammation, etc.