In another study intranasal administration of viola odorata extract oil showed to be effective in patients with insomnia.
2.
This species has a less wide range than sweet violet ( " Viola odorata " ).
3.
Note it is considered by some sources to be the same species as " Viola odorata ".
4.
A double blind clinical trial showed that the adjuvant use of viola odorata syrup with short-acting ?-agonists can improve the cough suppression in children with asthma.
5.
The genus includes dog violets, a group of scentless species which are the most common " Viola " in many areas, sweet violet ( " Viola odorata " ) ( named from its sweet scent ), and many other species whose common name includes the word " violet ".