Lamberts Vitamin B Complex
The functions of the B vitamins are such that a deficiency in one of more of them may cause deficiencies in the others.
As a result, most practitioners prefer to give a Vitamin B Complex (sometimes together with some of the single B vitamins) when supplementation needs to be long-term. Lamberts supplies 3 different Vitamin B Complexes, including Lamberts Vitamin B50 Complex that came out top in independent analysis.
This is hardly surprising given that lamberts design and manufacturing process is so refined and robust. Give that and the quality of Lamberts ingredients, you can be certain that if you choose lamberts Vitamin B Complex supplements you will be getting the most effective and scientifically developed supplements available, manufactured to very high standards.