Poison Demon Problem

A demon presents you with two glasses of water. One glass contains black water, the other, clear. But hidden in one of them a sinister secret, a neurotoxin that afflicts your sight and finally your brain and the other a precious neutralizing antidote. Each glass contains a special dye that increases the opacity of the water depending on whether or not an antidote is present. To satisfy the demon you must drink from both glasses and leave one glass completely empty but be careful, drinking too much poison at once incurs a lethal dose and drinking too much antidote without the poison to neutralize will damage your internal organs, killing you almost instantly. In what order must you drink the glasses of water to survive?

NB: The poison is 4x the content of the antidote.

#Logic

Easy Math Editor

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Math	Appears as
Remember to wrap math in `$` ... `$` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$

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Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$