Food sources don't pose Vitamin A toxicity issues. While too much vitamin A from supplements can be dangerous, beta-carotene (the natural form found in foods) doesn't pose such a risk. Additionally, the relative amount of Vitamin A found in foods as compared to a concentrated vitamin tablet is much, much less.
why ask me go to ultimate-guitar.com and type in toxicity in the search bar, they might not have it
Yes it is. While it might be rather tart, it is an excellent source of vitamin C and several other nutrients.
Vitamin A. Humans cannot store Vitamin C.
Vitamin A is stored in the liver
Vitamin C, a water soluble vitamin, is easily destroyed under heat.
Your own body produces vitamin D3 if your skin is exposed to sunlight. 10 minutes in the sun satisfies your daily need for vitamin D3. Vitamin D is also found in some foods, such as fish (especially cod) and eggs. Another source says that getting enough vitamin D3 from the sun might be more difficult, depending on geographical location and season. During an internet search, I did find that some people are allergic to vitamin D3 supplements. I don't know if this is because vitamin D3 can be made from wool.
You might want to take supplyment to get vitamin C
Chocolate toxicity does not usually apply to humans. However, even small amounts of chocolate can be toxic to dogs and other animals. The term refers to the stage at which the amount is harmful.
If you mean 671 international units, then taken consistently this dose might become toxic. Taking this amount for days or even a month is probably not going to cause toxicity, and to be honest I've taken 400 i.u. for several months and did not notice any problems.
Vitamin A is also known as retinol. Good sources of vitamin A include cheese, eggs, oily fish (such as mackerel), milk, fortified margarine and yoghurt. Liver is also a rich source of vitamin A. But, because it's such a rich source, if you already eat it every week, you might want to choose not to have it more often. If you're pregnant, you should avoid eating liver because of the amount of vitamin A it contains.
Not necessarily - but you might not get a full dose of the vitamin - since they gradually lose their potency.
You can, but traditionally coordinating conjunctions (such as and, but, or) are not used to start a sentence. You might consider using "alternatively" instead. For more synonyms of "or" consult a thesaurus or dictionary.