I've been there. The county I'm in (one of the largest in the mid-west) you'd get nailed for the ass package, please in the name of HR only do that if there's no other option. Like others have begun to say- get your attorney and doctor to contact the ADA (ass. district attorney) who prosecuted your case and get the condition that you get properly medicated for benzo withdrawal put into your plea deal. If you straight up plead guilty or lost a trial, don't know I'm not an attorney, this is NOT legal advice.
You need a physician and/or an attorney to talk to the ADA or the highest up personnel at the jail as possible to secure treatment in jail. Unfortunately you're going to a rough facility if it's the central LA city jail. You may already know this from your arrest. Do you remember how they processed you then? Going in will be similar but more thorough, probably.
Can someone who has been to the LA county women's jail please add to this thread? I'm assuming the OP is female, pardon me if I'm wrong. Didn't you say you've been in before? Try to recall the intake process, talkn to someone coming out - seriously, go by the jail and catch someone coming out and, straight up ask what the deal is, maybe there's benzos for sale inside. I don't recommend that, but it's possible.
Lawyer, Doctor, Information.
Call the jail blind, use a pay phone or burner and ask them what the policy is - get on it, you don't have much time and that jail is immense and not so nice, from what I've seen from documentaries and news reports when I lived in LA.
Be careful, I hope you have a prescription. This is the only time I'll state HR includes trying to get a 'script in an underhanded fashion, but you do need it (HR). Try to get enough to cover just your time in jail, you didn't want to further your habit by finding a pill mill. Find it for the short term, then forget it...
I'm concerned for your welfare. I have been in, but it was a new facility with pretty decent deputies, but getting medical help was nearly impossible (I was scripted clonazepam, bupe, lamictal and and a few others) they gave me clonidine and ibuprofen after 36 hours inside), that's pretty good for American jails. Fortunately, I found Xanax inside (cost me a ton).
"If you want to assess the compassion of a society look inside it's jails"