Drugs acting on respiratory track

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Across
  1. 6. It breaks disulfide bridges between glycoprotins of mucous
  2. 10. Antiasthamatic drug also producing CNS excitation
  3. 11. One of the phosphodiesterase inhibitors
  4. 13. Benzonatate belongs to this category
  5. 14. One of the classical mucolytic
  6. 15. One of the adverse effect of Dornase alfa
Down
  1. 1. It is a derivative of vasicine
  2. 2. Main adverse effect of codeine.
  3. 3. One of the antiasthmatic sympathomimetic drug
  4. 4. Sympathomimetics are contraindicated in this condition
  5. 5. One of the nonnarcotic centrally acting anti-tussive
  6. 7. One of the category of drugs useful in treatment of asthma
  7. 8. One of the directly acting expectorant
  8. 9. Antitussives are used for dry ________ cough.
  9. 12. The drugs facilitating removal of bronchial secretions by coughing