What is Vitamin B and why is it necessary?

What is the difference between Vitamin B Complex 50 and Vitamin B Complex 75 and Vitamin B Complex 125?

http://www.gnc.com/product/index.jsp?productId=2133317&cp=&sr=1&origkw=Vitamin+B+Complex&kw=vitamin+b+complex&parentPage=search http://www.gnc.com/product/index.jsp?productId=2151347&cp=&sr=1&origkw=Vitamin+B+Complex&kw=vitamin+b+complex&parentPage=search http://www.gnc.com/product/index.jsp?productId=2133343&cp=&sr=1&origkw=Vitamin+B+Complex&kw=vitamin+b+complex&parentPage=search I specifically want B12 so which one would be best?
Answer:

Unless they certify 100% from natural sources, look elsewhere! B12 & B6 can be dangerous in large amounts: see www.vitamins.com

John M at Yahoo! Answers Visit the source

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Other answers

You can buy B12 on it's own. http://www.vitaminme.com.au/site/page.cfm?s=shopProductInfo&t=shopProductInfo&productId=9440&gclid=COvgoLDy0JMCFR0ZagodHQgUiA

Nat

The 75, 50, & 125 are the dosages. The Maximum would be the 125.

John R

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