I have to take iron, vitamin d and probiotic pills. should i spread them out throughout the day? when is the best time to take these three pills?

Iron tablet should be taken with meal for avoiding stomach upset. You can take vitamin D at the same time with iron tablet during or after dinner time. You should avoid taking iron pill when you have milk or milk products. For probiotics you can take any time but some advise not to take probiotics with a large meal or with empty stomach so I guess breakfast should be a good time.