Drosera rotundifolia has a deep sounding, hoarse, barking or trumpet-toned cough, something like that of Verbascum, but there is more laryngeal trouble with Drosera, for the voice in talking has a deep base sound. Drosera is also one of our leading remedies in spasmodic coughs, whooping cough. With the cough there is great constriction of the chest and abdominal muscles, so that the patient holds them with the hands. The cough is worse after midnight.
Maharana Homoeo Reader