How much time does it take to raise vitamin d levels with 5000 iu daily?

If you are deficient in vitamin D, you should take this dose for 3 months before reducing to 2000 units/day. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs.

As soon as the fat stores are filled up it will go up. Depends on how low it is and how much fat you have. The question is if your Vit D level is "low" what is the evidence that increasing it at your age will help you live healthier and longer. Not much evidence in most situations.