If you are trying to decide between the 192 count New Chapter Perfect Prenatal, 192 Count and the Full trimester 90 day version New Chapter Organics Perfect Prenatal Full Trimester Vitamin Tablets, 270-Count , rest assured they are both the exact same formulation. Check the Subscribe and Save as well as the everyday prices, generally the full trimester is slightly cheaper per tablet (3 tablets per serving or per day). Even though the full trimester box is slightly larger, the glass bottles inside are the same size. The New Chapter Perfect Prenatals consist of a good blend of multivitamins and minerals, however they are somewhat short on Calcium (7.5%) and Magnesium (3%). They also fall somewhat short on copper (aneurysms, spider veins, varicose veins), chromium (diabetes / pancreas), molybdenum, iodine (thyroid) and zinc (though zinc depletes copper still important for immune system). From the package: Serving Size 3 Tablets Servings per container (192 tablets = 64 servings, 270 tablets = 90 servings) Three tablets contain: Vitamin A (beta carotene) 5000 iu 100% Vitamin C 60 mg 100% Vitamin D3 1000 iu 250% (the DV is under dispute by the Vitamin D Council) Vitamin E 30 iu 100% Vitamin K1 70 mcg 88% Vitamin K2 (MK7 best form!) 10 mcg 12% (MK7 = Grrreat!) Thiamine (B1) 4 mg 267% Riboflavin (B2) 5 mg 294% Niacin 20 mg 150% Vitamin B6 5 mg 250% Folate 600 mcg 150% Vitamin B12 30 mcg 500% Biotin 300 mcg 100% Panthothenic Acid 10 mg 100% Calcium (from algae) 75 mg 7.5% Iodine 90 mcg 60% Magnesium 15 mg 3% (important to note...) Zinc 7.5 mg 50% (Zinc depletes copper) Selenium 50 mcg 71% Copper 750 mcg 38% (depleted by zinc... deficiency scientifically linked to aneurisms in the poultry industry) Manganese 2 mg 100% Chromium 100 mcg 83% Molybdenum 20 mcg 27% Mixed Carotenoids 3 mg The NCO Perfect Prenatals also contain a Prenatal Herbal Blend 300 mg consisting of Organic brown rice, organic oats, organic blueberries, organic prunes, organic blackberries, organic flame raisins, organic raspberries, organic dandelion, organic rose hips, organic lavender, organic lemon balm, organic peppermint, organic cloves, l.casei, l.plantarum, l.salivarius, l.acidophilus, l.rhamnosus, s.thermophilus, b.bifidum, b.infantis, b.longum, and b.breve) as well as Breast Support Blend 100mg consisting of organic broccoli, organic cauliflower, organic kale, organic daikon radish, organic cabbage and organic mustard. I highly recommend the New Chapter Organics Perfect Prenatals however I also recommend alternating the NCO Perfect Prenatals with another good quality whole food sourced brand to ensure none of the nutrients are missed over the duration of the pregnancy including from TTC, the pregnancy itself and continuing through the breastfeeding months. The nutrient deficiencies are of serious note considering the birth defects and chronic illnesses they are associated with including: Selenium deficiency is linked to cystic fibrosis and diabetes; magnesium deficiency is linked to inverted sternum, club foot, diabetes, Hypertension, irritability, heart disease, violent tendencies; chromium deficiency is linked to diabetes; B deficiency is linked to spina bifada; D deficiency is linked to many illnesses and cancers; copper deficiency is linked to aneurisms (turkey farmers learned this expensive lesson in the 1950s); the list continues onward..