I need facts!! Help

Darci
I know that there have been several posts about geritol. But I just bought a bottle of the liquid form and my questions are:
When do you take it?  
What time of day
When during cycle 
How much do you take?
Do I stop taking the prenatal vitamins?
Should it be taken with food before meal after meal?
I know it has instructions on the bottle, but not sure if they need to be adjusted for someone ttc. 
Thank you all!