I am 23 years old. I had a stomach ulcer in 2023 and around the same time my
vitamin D level was low (19 ng/mL). I took Vitamin D3 60,000 IU capsules once a week for 12 weeks. After taking the last capsule I started urinating frequently about an hour later and this continued for around 2 days so I stopped taking Vitamin D3.
Now I feel that my vitamin D may be low again. Could you please advise me on how I should safely correct my vitamin D level? What is the ideal 25(OH)D level for someone my age and should I get my vitamin D and
calcium levels checked before restarting supplementation?