25 y.o. male, no history , bmi 23 and i just experienced sudden increase in gas, flatulence and bloating. my vitamin d level was about 12 so i started supplementing myself. do you think it's likely that vitamin d triggered this ?

Your suspicion could be true because the GI symptoms occur at the same time of taking a new medication. You need vitamin D supplement but you can use a different formula or brand. You did not tell us what formula you are taking. By my experience, the high dose 25,000 or 50,000 IU, once weekly, has more adverse effects than the lower, daily dose.

Vitamin D is an unlikely cause of your symptoms. Visit these sites for information about your symptoms: Fodmap: https://www.hopkinsmedicine.org/health/wellness-and-prevention/fodmap-diet-what-you-need-to-know Flatulence: https://www.niddk.nih.gov/health-information/digestive-diseases/gas-digestive-tract/eating-diet-nutrition