Final answer:
Carbachol and pilocarpine are drugs that can cross the blood-brain barrier to affect the nervous system.
Explanation:
Carbachol is a drug that can cross the blood-brain barrier and have effects on the nervous system. This drug works by mimicking the action of acetylcholine, a neurotransmitter in the brain.
Pilocarpine is another drug that can pass through the blood-brain barrier and impact the central nervous system. It is commonly used to treat conditions like glaucoma and xerostomia.
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