Is it true that taking high amounts of vitamin c during early pregnancy (4-8 weeks) can cause a miscarriage?

Ask your doctor.

No.
You will get horrible jitters, that's about it. Vitamin C is water soluble and quickly is excreted in the urine when taken in excess.

No, it will have no effect on fetus at all.

Any excess is merely sent out of body in urine.

It can cause some damage to stomach for long term, and really make you sick if way too much.

This sounds like a question form a few weeks ago?

Why are you asking ?

This thread is closed,

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