Quinine: during intervals when the attacks are periodical.
Resorcin: relieves dyspnea.
Sandalwood Oil.
Sanguinarine.
Sodium Arsenate: as tonic, acts probably on respiratory centre.
Sodium Iodide.
Sodium Nitrate: like nitroglycerin.
Sodium Phosphate: sometimes efficacious.
Solanine.
Spermine: as tonic.