Brits are calling out the 'dystopian' and 'post-apocalyptic' American pharma ads that aired during Oprah's interview with Meghan Markle and Prince Harry

• Brits questioned American drug ads that aired during Oprah's interview with Prince Harry and Meghan Markle.
• Most countries have banned direct to consumer advertisements for prescription medicine.
• "American adverts make me feel like I'm in some post-apocalyptic world," one tweet read.

British people cannot wrap their heads around American advertising for prescription drugs.

British viewers took to Twitter during Meghan Markle and Prince Harry's bombshell interview with Oprah last night to question why pharmaceutical companies advertise directly to viewers.

Writer Ayesha Siddiqi compiled a Twitter thread cataloging tweets by Brits who called advertising for prescription drugs "wild," "surreal," and "dark." The thread shocked Americans, for whom drug ads on TV are routine.

"American adverts make me feel like I'm in some post-apocalyptic world," one tweet read.

"American medical adverts are some real dystopian s*** how you gonna tell me I might die," read another.

The US and New Zealand are the only two countries that allow pharmaceutical companies to advertise directly to consumers.

The health industry spends $30 billion on ads and promotions annually, according to an analysis out of Dartmouth College. Pharma companies have expanded beyond television to social media ads and celebrity partnerships.

Pharma ads are controversial even in the US. In 2015, the American Medical Association - the country's largest physician trade group - called to ban drug ads.

The Food and Drug Administrations allowed drug makers to run ads in 1985, according to STAT. After the agency relaxed regulations around the advertising in the late 1990s, spending for direct-to-consumer advertising swell from from $360 million in 1995 to $5 billion in 2006.

Critics of drug ads have asked the FDA for greater regulation, calling to stop firms from running distracting music and animations. The FDA states if a drug maker overstates the drug's benefits or misrepresents the data in an advertisement, the agency can ask to the company to remove or re-publish it.