Hello Dr, Thankyou For Answering My Question,, I Have A

hello Dr, thankyou for answering my question,,
i have a prescription for Diazepam 10mg and it says to take one tablet daily as needed. I don't feel it has helped my back spasms, so I would like to know if taking a second tablet would be ok?
oh sorry It didn't say i had to pay for this so I will thank you for your time and say good night.
i wish it would have said there was a fee for this information .