valerina ? advice needed

[peppa pig]

been taking this since tuesday bought the valerina daytime tablets from holland and barret along with lemon balm , i think it is having a calming effect felt little bit less anxious than i have been lately , is this something that needs to build up in your system , ? do you need to take it 3x daily as per instructions or just as whne feel needing it most , i know whith anti depressants they can take few weeks to take effect unsure about herbals . had much better day today only blip i've had is trip to dentist with kids , arguing in car and stuck in traffic started to feel short of breath , chest pains etc that i tend to have but managed to calm myself back down quickly , reminding myself that my chest pain is nothing to do with my heart and its me being anxious
anyone else tried valerina with success