Trish - here's what I take:

Calcium - at least 600mg/day. However I also try and have yoghurt, cheese and a glass of milk each day. If constipation isn't a problem for you take 2. I take a calcium/magnesium combo as mag is needed for absorption of calcium (can often offset the constipation issue). Always take this at night as it increases absorption.

Multi - Elevit 1 per day

Zinc - 1 per day. I don't think there's enough in Elevit and our requirements increase during preg.

Fish Oil 1g 2-3/ day. I eat NO fish and omega 3 is important for bubs brain development and have read studies that it reduces allergy problems once born.

Iron - currently not taking iron as my meat consumption is Ok but will probably start again soon esp 3rd trim when I get quite tired and anaemic and bubs needs more. Always take this with vit C or OJ and apart from other vitamins esp zinc and calcium.

I suffered a bit last time from cramps but only rarely and only towards the end. Magnesium is usually (not always) the main culprit.

I think there's enough iodine in your diet if you have a balanced and variety of foods but best to ask your OB.

Anyway, this is just my concoction and it works well for me. I had a healthy pregnancy and DS was a healthy baby. I separate these thoughout the day, especially Fish oil as they are huge and can sometimes have a funny aftertaste. Also my pee is a radioactive yellow colour Lol!!!!! I'm prolly flushing most of them down the drain! I guess nothing beats a healthy diet, however my lack of enthusiasm over food means I'm not as good as I could be.