I have started taking fish oil supplements. Omega 3 fatty acids are very important to include in your diet. It is great for people who do not like fish, which is a great source of Omega 3 fatty acids. I would rather take this supplement! It is very good for heart health, joint pain, and for your skin. They usually come in 1200 mg and one should be enough, although the bottle recommends 2 at meal time. Unless you have an already existing heart condition might want to take 2. Always consult with your doctor before taking any vitamins or medications.
A multivitamin is also very important especially for women. If you are thinking about having a baby it is very important to incorporate a multivitamin with 400mcg of folic acid daily. Folic acid is very important in preventing birth defects and you do not want to be lacking in this vitamin if you are thinking about conceiving.
VERY IMPORTANT for women is vitamin D and calcium. Most multivitamins come with at least 400 IUD of vitamin D. I have noticed that they have increased the vitamin D amount in the vitamin I take to about 800IUD. Vitamin D is very important because it helps the calcium get absorbed in our system. When more calcium is available in our blood more will be available to our bones. As women we need to be concerned about osteoporosis. We need to save our bones!!! So take a multivitamin and ask your doctor what calcium supplement is best to suit you. If you drink at least 3 glasses of milk a day already then your calcium supplement intake should not be that high. (has to be an 8oz glass)
There also has been debate that increased vitamin supplements is not good for your health. Although, I believe in concentrating what is important for your body. You need to think about what you are lacking in your diet that you can replenish safely through a multivitamin.