I bought some more milk thistle recently. It is 80% Silymarin extract. I'm sure the one i had before was not as strong, although i may be wrong.

It says on packet to take 100-500mg twice a day, or as directed by a health practitioner.

If i fill 00 capsule, will that be 500mg? At the momemnt with this new packet I've been taking 1/2 teaspoon once a day.

A double '00' holds about 750mg. A single '0' holds around 500mg.

I have been taking milk thistle on and off when i remember, and probably not taking full dosage.

I want to start taking it properly, i think you have told me before, to take for 2/3 months.
I want to regenerate my liver. I don't know for sure how much damage or if any damage, but used to drink heavily.

I think you said to follow with Turmeric. I have large bag of it, could you remind me of minimum to take to be beneficial? I want to put in 00 caps, as i find i never get around to using it otherwise. I added some to a curry once, made from jar of curry sauce, and it ruined it, tasted awful, which was strange, as don't most curries have that in anyway.

I would stick to small doses again such as two 500-750mg capsules 3 times daily.  More is not going to hurt, but since curcumin, the active component is so poorly absorbed taking large doses will just pretty much be wasted. So no reason to cap up more than your body can really absorb.