What happened to Alice when she drank from the bottle in Alice's Adventures in Wonderland?

After Alice finds a tiny key and fits it into the tiny lock of a 15-inch-high door, she peers inside and sees a beautiful garden. She wishes she could get through it, but even her head is too big. On the same table where she had found the key, she then notices a bottle which she is sure was not there before. Around its neck is a printed label that reads "Drink me." Alice is suspicious and takes time to ascertain that it is not also labeled "Poison." As it is not, she tastes the contents. The "very nice" flavor reminds her of:

cherry-tart, custard, pine-apple, roast turkey, toffee, and hot buttered toast.

Alice immediately starts to feel odd and realizes she is shrinking. She is getting her wish that she could "shut up like a telescope" to get through the door. She shrinks down to 10 inches high, which makes her happy because she will be able to reach the garden. She is soon reassured that she will not shrink any more, as she was a bit worried that she would keep shrinking down:

". . . it might end, you know," said Alice to herself, "in my going out altogether, like a candle."
https://www.cs.cmu.edu/~rgs/alice-I.html