Why would you take supplements? Some vitamin tablets contain many times the amount of RDA you actually need and this is from The Independent
"It is possible, however, to overdose on vitamins. While a surfeit of a water-soluble vitamin, such as C, is seldom dangerous as it can be expelled via the urine, it is much harder to expel excess quantities of fat-soluble vitamins. Vitamin A is a case in point. In large doses it has the potential to accumulate in body fat, especially in the fatty tissue around the liver. The toxic effects of this can be severe, causing headaches and dizziness and in pregnant women adversely affecting the foetus."
Most health advisors would now recommend that you get your vitamins naturally as to be quite honest, supplements are just a way for drug companies to make money by convincing you that you NEED these vitamins to have a health pregnancy. You don't.
Folic acid is one supplement that is hard to get naturally (although this is now added to many cereals) but others are not so hard. A fruit smoothie every day can contain up to 3 portions of fruit. Then vegetables with your evening meal and a salad for lunch brings you up to your 5 a day. That's all you need really.
The darker and more colourful the fruit and veg - the better. So broccoli, sprouts, cabbage, peppers, spinach are all good. Blueberries are a superfood and great in smoothies. Cereals and brown bread/brown pasta and brown rice will all give you your fibre. Eating healthily will ensure you get just the right amount of vitamins and minerals and of course your body does a really good job of directing most of that good stuff to your baby. It's also a darn sight cheaper meaning that you have money left over to spend on anti-stretch mark cream 