I've been using this brand for years. It is a quality vitamin, with a high percentage of essential nutrients. The B vitamins in this formulation are excellent for me in supporting my nervous system, and are present enough that you may not need to supplement with a separate B complex. It also has adrenal support, the only version of Douglas Labs Preventive vitamins that does. When I don't take these I exhaust more readily. The dosage is 6 daily; I split it 3/3 breakfast and dinner. The B content turns urine a bright yellow color, so don't panic. Also, they are a tad large, so if you have difficulty swallowing these may not be for you. An outstanding product, a little pricey but worth it.