When the plant is younger, the ratio of scopolamine to atropine is about 3:1; after flowering, this ratio is reversed, with the amount of scopolamine continuing to decrease as the plant gets older.
Kod mlađih biljaka omjer atropina i skopolamina je oko 3:1, nakon cvjetanja je ovaj omjer obrnut, gdje se omjer skopolamina smanjuje kako biljka stari.