A flood of serotonin, has de-syntisized your receptors and to normalize this the brain is compensating by allowing you the using of four of your given senses, at any given time, the missing one constantly switching. So if you can see, smell, taste and hear, you can't feel anything.

You didn't exceed the dosage?

The drug just has to pass through your system. Trust me, you'll know when it's gone.

From Senseless (1998)

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