I have done it already for the last year.  Not only calcium, but also iron + vitamin C to help iron to stay in body.  Besides very low in calcium, most Chinese suffer also from anemia.

Added after : She takes the calcium pill in the morning with breakfast, and the iron pill with dinner at night.

In view of all the food scandals, yes. If you have the opportunity to ensure the good health of loved ones, who would hesitate?

I was going to say calcium and iron. Chinese women can be anemic. I was considering Valium too but turning on the TV has the same effect.

I don't mean to be difficult but why would the supplements be less fake than the milk?

You could give them cantaloupes, beef bone broth, steak and eggs for better bone health.

Just make sure all of these aren't imported from the West, otherwise they'll end up with listeria, mad cow disease, horse meat instead of beef and dioxine instead.

Hicks downvotes incoming.

Justin, if you get downvoted for an idotic comment like that, it won't be because we're 'hicks', it's because;

A: You cannot seriously say that food safety standards are worse in western countries than China. Even most Chinese are reasonably worried about their food.

B: Lumping all westerners together is a congitive triumph best left to the likes of victoria. The word hick doesn't even apply in my country, we have other insults for the less educated or stupid. 

Also, horse is awesome. I suggest you try it.

Double also, WTF would you want to eat Chinese steak?

Yes, I'd say it's a pretty good idea.

I took supplements in China, because I have a reasonably good working knowledge of my nutritional needs, enough to know that my diet was massively deficient in calcium, iron and potassium in particular. At home, I don't need them.

Your wife could probably do with looking after her bones. Birthing a mini-hulk can't be an easy job...

pholic acid also is very good at this time    remember to keep a eye on blood sugars and Iron levels also     hope things are all good for you guys

Calcium with vitamin D3. Most calcium supplements come with a D supplement to help absorb it. D3 is proven effective, D2 isn't. Happy is correct in that iron should be taken with vitamin C for maximum absorption. If her other supplements have magnesium, try to take it at a different time than the calcium because they can't be absorbed at the same time.

There's one caveat to taking calcium supplements; potentially hard on the kidneys, especially if taken in excess.  My personal experience, after moving to and living in an area for only 1.5 years with tap water already heavily calcified (lots of limestone where I live), I developed a lovely 10mm kidney stone.  It wasn't passable, required surgery, and generally sucked.  Post surgery analysis of the stone confirmed the composition was mostly calcium, in the form of calcium carbonate, which is also what's in most of your supplements.  The solubility of CaCO3 in water (IE - you!) is pretty crappy, so if it doesn't get deposited to your bones, it's just gonna get stuck somewhere else.

Maybe, just an all round multivitamin will do the trick? This is what I tend to take, and what pharmacies usually recommend for me to take, as you only have to remember taking the one type of pill and you can rest assured you're getting the majority of your daily nutrients without worrying about what foods to eat/ what beverages to drink. I definitely agree, you should get them imported though, as first of all (personally) I can't read a damn label here, and secondly if I could, I wouldn't trust it as far as i could throw it.

why...

If she's pregnant, yes.

My ex-wife had them.

Caltrate was the name of them, I think.

You don't need lots of multi-vitamins etc

You need folic acid and the caltrate would be good

and then eat the right foods.

no oily food.  not too much in the way of eggs because they can bring out exma (forgot the spelling, sorry)