That's a good question with a complex answer.
The short answer is "It's too much when it becomes toxic for you".
The long answer is that most people think that you can take too much using FAR LESS than it REALLY takes to become toxic.
There have been NO REPORTS of vitamin D toxicity with continued usage (many years) of 10,000 IU's or less per day in adults.
Your body can make its own vitamin D. All it needs is Sunlight on your skin.
Cases of adults with toxicity from supplements almost never occur with less than 10,000 IU's of Vitamin D every day for long periods of time, and most occurred with more than 25,000 IU's a day over an extended period.
There has never been a case of vitamin D toxicity from the sun.
Yes, and there are some vitamins that are toxic when taken in large quanities.
If you exceed the amount of vitamins you are allowed to take, then YES!
Vitamins do not normally give you headaches, However, if you take far too many vitamins then that is the likely cause of headaches. Ask your doctor for some advice on this particular subject, always best to be on the safe side.
In extreme cases and with certain vitamins this can happen.
I recommend just two vitamins a day. Do not take multiple different types, just use 1 type and 2 a day. I don't know what happens but if you take too many pills, gummys, or anything more than the reccomended amount, that's not good.
yes if you have liver disease or if you take too many(of same or combination of different vitamins and other supplements)
Nothing
You should eat two vitamins.
None, though you can have too much of some. Many vitamins are essential for good health.
It would be best to ask your doctor on how many you should take a day. It would also depend on how many different varieties of vitamins you are taking per day, as to how many you can take.
Vitamins are found in many kinds of food; we can also take vitamin pills if we wish.
if you buy the tablets or packaged vitamins it will tell you on the bottle how many to take for 1 day.