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Content: I recommend a Vitamin B complex to 
those who wish to improve their mood, mental clarity, and energy. The effects are subtle, especially in the young who normally have adequate 
dietary intake of these nutrients. Improvements in cognitive functions from 
vitamin B are particularly noticeable in middle age individuals and the elderly. B vitamin 
products sold online
Doctor's Best, Best Fully Active B Complex, 30 Veggie Caps
Now Foods, B-50, 100 Veggie Caps
Most Vitamin B 
Complex supplements have the following: B 1 -- Thiamine Cocarboxylase 
B 2 -- Riboflavin Flavin Mono Nucleotide 
B 3 --
Niacin, Nicotinamide and
NADH
B 5 -- Pantothenic acid,
Pantethine
B 6 -- Pyridoxine Pyridoxal Phosphate
B12 -- Cyanocobalamin Dibencozide or Methylcobalamin
Folic acid
Biotin
Oral or sublingual B complex, there seems to be no 
difference in overall benefit
It is important to take a B complex sublingually or is an oral pill good enough? A single-center, double-blinded, randomized controlled study to evaluate the 
relative efficacy of sublingual and oral vitamin B-complex administration in 
reducing total serum homocysteine levels. J Altern Complement Med. 2006. College of Naturopathic Medicine, University of Bridgeport, Bridgeport, CT. Forty-one subjects, between the ages of 50 and 80 
years with total serum homocysteine concentrations exceeding 11 micromol/L, were 
treated with a six-week regimen of vitamin B complex.