For premenstrual complaints [PMS] you can search on my site [PMS]
3 easy to get herbs for PMS are:
Evening Primrose oil 1000 mg caps.1 0r 2 per day
Dong Quai 1000 mg 2 per day
Valeriana: 100 mg 2-3 times per day [may cause some sleepiness!]
To start a few days or more before the expected menstruation.
Primrose oil can be taken for extended periods.
By Primrose, oil wish is hexane-free/solvent free.
Example of a good brand: