不是放多了，而是你想的太多了。五十歲以上的，對口服B12吸收減少。有時靠打肌肉才能維持

https://www.webmd.com/vitamins/ai/ingredientmono-926/vitamin-b12

Because 10% to 30% of older people do not absorb food-bound vitamin B12 efficiently, those over 50 years should meet the RDA by eating foods fortified with B12 or by taking a vitamin B12 supplement. Supplementation of 25-100 mcg per day has been used to maintain vitamin B12 levels in older people.

 

所有跟帖： 

• 是！不僅是老年人補不上B12。我知道一個女孩，約30歲，口服B12就是補不上，隻能肌注。她是因為疲憊見醫生後才知道原因。 -鍋沿- ♂ (0 bytes) () 10/30/2021 postreply 10:21:07

• 謝謝老師解釋。老師什麽都懂，幸運有在這個園地學習：） -愛令- ♀ (0 bytes) () 10/30/2021 postreply 17:22:17

• 我買的B12片劑1200mcg說明是每天一片 -外鄉人- ♂ (0 bytes) () 10/30/2021 postreply 19:09:10

• 這個有點大，應該做治療用的 -fuz- ♂ (120 bytes) () 10/31/2021 postreply 03:52:23

• 也不是人人需要補這麽多。我父母從來不吃維生素，也健康活到80多。 -我是魯瑟夫- ♂ (0 bytes) () 10/30/2021 postreply 19:41:29

• 是的，不偏食，沒有病，不用補 -fuz- ♂ (0 bytes) () 10/30/2021 postreply 20:23:09