Skip to main content

The timeline can be navigated by dragging the pointer on the timeline bar, located at the bottom of the screen on desktop and on the left on mobile. To filter by a specific topic, make a selection on the dropdown “Filters” menu or click “Search” to do a keyword search. To learn more, click “Read More” below.

Read More
A red Rx (prescription) symbol printed on a blister pack.
The prescription symbol printed on a blister pack.

The Durham-Humphrey Amendment mandates that certain drugs are only available by prescription.

Date: 1951

LLP
DRUG
PHA
The prescription symbol printed on a blister pack.

The amendment lists the class of drugs that cannot be safely used without medical supervision.