 [ Symptoms ] can an infected ingrown toenail cause diarrhea i have had it off and on for 2 days i feel fine after using the restroom i have had an ingrown toenail that i believe to now be infected for a few days i am going to see a doctor tomorrow my diarrhea started yesterday in the morning where i had a bad stomach ache after using the restroom i felt like nothing happened i was totally fine about 12 hours later i felt the same problem a bad stomach ache again after using the restroom i was fine today it is happened twice in a closer time period about 5 hours could it be this infection or maybe something i ate [ Disease ] the recommended dietary allowance rda is 2 4 micrograms per day for adults and adolescents aged 14 years and older because 10 30 of older people do not absorb food bound vitamin b12 efficiently those over 50 years of age should meet the rda by eating foods fortified with b12 or by taking a vitamin b12 supplement supplementation of 25 100 micrograms per day has been used to maintain vitamin b12 levels in older people remember to include this on your personal medication list and always advise your health care providers and pharmacists of any vitamins supplements or herbals that you are taking