"When the hoarding started, my 30-day supply was in back order," said Thebarge. "The scenario really scared me, what would happen to me if I couldn't get HCQ?"

While the US seems to hold sway with its ally India in obtaining the finished product, there's a bigger issue earlier in the supply chain.

India gets around 68% of its raw materials -- known as active pharmaceutical ingredients (APIs) -- from China. Any disruption in that supply chain can create a major problem, especially during a pandemic.

As scientists and pharmaceutical companies race to find an effective treatment and vaccine for Covid-19, there are fears the current vulnerabilities in the supply chain could expose the US -- and other countries -- to drug shortages, just when they need them most.

The US has pledged to "Buy American" drugs going forward, and Indian plans to ramp up its own API production, but will they be able to replace supplies from China during this pandemic -- or even the next?

Karan Singh, managing director of Indian pharmaceutical company ACG Worldwide, says the government realized its huge population was never going to be able to afford imported patented drugs, and needed to find a solution.

Indian companies excelled in reverse engineering big-name drugs and launched copycat versions -- legally. But it wasn't only India that wanted these products, and in the mid-1980s, regulatory changes opened up the US market more open to cheap copycat drugs, too.

Naturally, the pharmaceutical giants, which had invested millions of dollars in creating new drugs, pushed back, and in 1995 the World Trade Organization (WTO) introduced an agreement giving drug patents 20 years' protection -- and companies were given 10 years to comply.

The WTO conceded that member states could grant licenses to manufacturers to make generic versions of patented medicines needed to protect public health.

Now that company is working to reverse engineer three drugs being tested to fight Covid-19 -- Remdesivir, Favipiravir and Baloxavir. "Twenty years later we are again in the forefront here in India with regards to medicines necessary to combat Covid-19," said Dr Yusuf Hamied, chairman of Cipla.

Still, overcoming challenges from intellectual property rights is only half the story.

"(When) China shut down because of Covid-19, we got desperate," said Vinay Pinto, executive director at Wallace Pharma, one of the country's leading manufacturers of HCQ.

"We are still facing a lot of difficulty in getting imports from China," PC Mishra, director of India's Directorate General of Foreign Trade said in late April. "If we compare March 2020 and 2019, imports from China are down by 40%."

Jayasree Iyer, the executive director of Access to Medicine Foundation, a non-profit that analyzes pharmaceutical industries, says there is also a fear among pharma companies that they "may not have enough stocked-up APIs for their next set of commitments."

India used to have a thriving bulk drug and API industry, but when import restrictions were lifted in the early 1990s, its generic drug manufacturers began getting raw materials from China, where some APIs can cost up to 30% less, according to the CII-KPMG report.

"Large incentives were given by the Chinese government to Chinese pharmaceutical companies to set up large API plants," said Singh of ACG Worldwide. "Because of the sheer size and scale of these facilities they were able to leverage economies of scale to drive cost down."

There are now more than 7,000 API manufacturers in China compared to around 1,500 plants in India, where big players like Sun Pharma and Cipla are a rarity, according to the CII-KPMG report.

This is not the first time India's pharma sector has been affected by a slowdown in China.

After that, the Indian government explored the idea of building Mega Pharma Parks to produce APIs but the project was reportedly shelved due to a lack of financial assistance.

However, the most recent supply shortages have caused a rethink.

On March 21, the Indian government revived plans for Bulk Pharma Parks as part of a $1.3 billion package to boost domestic production of bulk drugs and exports.

It includes establishing three bulk drug parks with common infrastructure facilities and a production-linked incentive scheme to promote domestic production of 53 critical key starting materials, drug intermediates and APIs.

"This is a much-needed step, but we will have to see how it's implemented at state level. In the past we have faced immense challenges for environmental clearances or accessing finance," said Dr Kamal Vashi, Vice President of Mangalam Drugs and Organics, one of India's API manufacturing companies.

The United States, too, has recognized the need to become more self-sufficient.

Speaking about Trump's "Buy American" executive order, he said that after this pandemic, the American government would source essential medicines, medical supplies and equipment only from American companies.

The push to reduce the US's reliance on other countries for drugs has gained bipartisan support.

"India is the source of 24.5% of generic drugs sold in the US," she said. "This appears to suggest that we don't need to worry about generics coming from China. In fact, India is dramatically dependent on China for raw materials and chemical intermediates that are used to make active pharmaceutical ingredients."

In short, the US will only not be reliant on China if it cuts ties with India, too.

Nicole Longo, public affairs director at pharmaceutical lobbying group PhRMA, says US plans to move all pharmaceutical manufacturing onshore vastly "underestimate the significant time, resources and other feasibility challenges and complexities involved."

"They also ignore the strength of a robust and geographically diverse global supply chain," she added.

Indian pharmaceutical companies say it will take time to build up their API production capacity -- and reduce their reliance on China.

"Covid-19 has been an eye opener," said Dinesh Dua, Chairman of Pharmaceuticals Export Promotion Council (Pharmexcil). "The government has done more in the past few weeks than what it has done in the past few years. But even if we start now, it will take us at least 10 years to end our dependency on China."

Philippe Andre, who audits pharmaceutical companies' manufacturing practices in China, endorses a more collaborative approach. "The solution would have to be international, through some sort of system where the producer countries would have to ensure they have sufficient capacity to continue supplying the world during a crisis," he said.

For now, India appears to have little choice but to rely on China for the majority of its APIs -- and the US to rely on India for the majority of its drugs. The true test of that supply chain will will come when -- or perhaps if -- scientists find a treatment or vaccine for Covid-19.

See the article here:

The coronavirus exposed the US' reliance on India for generic drugs. But that supply chain is ultimately controlled by China - CNN