Please choose the correct ending to complete the given sentence: Health: [header] How to prevent stomach upset from vitamins [title] Ask your doctor if you need to take vitamin supplements if they upset your stomach. [step] If you are eating a well-balanced diet, she might advise you that taking extra vitamins is not necessary. Consult your doctor about alternatives if the problem of stomach upset from vitamins persists.

Ending1: [title] Determine the correct type and dosage of vitamins. [step] This will help you not only avoid harming your stomach, but also best help your body. Ending2: [substeps] Ask your doctor, " i am not sure how much vitamin a i should take. I was tested specifically for corticosteroids in patients who had digestive failure, which was found to be linked to what research indicates is a higher sensitivity to sugar. Ending3: [title] Be vigilant about finding supplements which suit your health needs. [step] ,, don't just choose vitamins that are essential for your well-being. Ending4: [substeps] Always check with your doctor before taking a vitamin supplement if the problem persists. [title] Try using vitamin c and vitamin b12 supplements if you are pregnant or breastfeeding.

Answer format: ending1/ending2/ending3/ending4