Aralia Racemosa is a homeopathic remedy for dry cough coming on after first sleep, about middle of night; hay-fever, frequent sneezing. The least current of air causes sneezing with copious watery, excoriating nasal discharge of salty acrid taste. Modalities: Worse about 11pm (cough).Source: Boericke Materia Medica
You can find Aralia Racemosa at Remedy Source.