B complex vitamins are a popular and effective way to help restore physical and mental energy when stress, fatigue and poor diets run you down. Or use a good B-100 like this one from NOW Foods to make sure you don't get run down in the first place, especially when you can't always eat right. Almost every supplement brand makes a B complex vitamin in two common versions: a B-50 with 50 mg of most B vitamins, and B-100 with 100 mg of most B vitamins. Regardless of brand, B-50s and B-100s usually conform to this standard formula. The main difference is the freshness and purity of the materials in the product (B complexes don't store well for long periods once opened). NOW Foods B-100 Complex may be your best choice given their reputation for premium ingredients, and fortunately this is one case where the best doesn't cost a lot.
NOW's B-100 mirrors the formula in most B-100s; its main feature is the quality of the materials and the fact that it's from NOW Foods, a name trusted by virtually everyone in the industry. NOW Foods are the industry's standard-bearers in terms of purity and potency. Not only do they thoroughly research each product to get every last detail right, but NOW Foods has made a massive investment in equipment and resources that permit them run their own state-of-the-art materials testing at every stage of production (most companies have to rely on third party labs). NOW's fanatical standard for product integrity benefits every product they make, from cutting-edge nutrients to basic things like vitamin C, and in category after category, NOW's product is the one to choose if you know vitamins. As far as B-100s go, you're not going to do better than NOW Foods High Potency B-100 Complex. Be sure to take NOW B-100 with solid food for comfortable and complete absorption. Most people feel improvements in energy and mood within 3 days of beginning a B-complex. Note: the vitamin B-2 in NOW B-100 and other products colors the urine yellow. This is normal, harmless and confirms that the vitamins have been absorbed into the bloodstream.