What happens if you don't take your vitamins?

 I'm with you on the schedule thing.  I suck at taking my pills on a schedule.  So, here's what I do:  (it's probably not optimal, but at least I get my vites in)....

Just before bed, I take my multivitamin, calcium, 5-HTP, sleepy-time pill, and allergy medication.  (I NEVER miss these meds).

When I wake up, I take my multi-vitamin, calcium, anti-depressant, and B-12.

In the middle of the day, I take my iron and my anti-depressant (usually when I get home from work).  (These two hammer my stomach, so I try to take it with a small snack).

You want to try to group it with some event that is important.  Getting up... going to bed... getting home or fixing dinner.

I find that this works best for me.  

You will be 2 months out next week and should be able to swallow pills by now.  I wasn't allowed to swallow pills for the first 5 weeks and then had no problems even with horse pills. I now use centrum silver chewables and BA Cherry Lozenges (calcium citrate) and raspberry chewies(calcium citrate) because I love the taste of them = feel like I am eating candy 3 times per day.

As far as long term side effects of not taking vitamins -

calcium and vitamin D - osteoporosis - broken bones and losing teeth
B12 and B1 - nerve damage and if bad enough can become permanent.  I have heard of people getting it so bad they actually became bedridden because they couldnt' walk anymore.
iron - anemic - loss of hair, difficulty breathing, severe fatigue
multi - can cause a large number of deficiencies
vitamin A - blindness