This product comes in a 350 mL bottle and costs around $13.
It contains B Vitamins (B1, B2, B6, B12) and iron. I find that taking this product regularly REALLY increases my energy level! The bottle calls for a dose of 1 TBSP (15 mL) three times daily, but I just take one tablespoon in the morning (Meaning my bottle lasts 3 weeks instead of 1 week).
The flavor is terrible (it smells and tastes like rotten Flintstones vitamins) but I just chase it with my coffee and the flavor dissipates quickly. This stuff does have to be stored in the fridge once it is open, which is a bit inconvenient but not the end of the world.
I think the full dose of 45 mL per day is designed for people with terrible diets etc. - 15 mL works just fine for me in addition to my regular multivitamin. I would highly recommend this product for anybody struggling with low energy - might be a vitamin deficiency! This product only lost stars because of the price - if you take the recommended dosage it will cost you $13 per week to take this product, which is pretty high for a vitamin supplement.