Yes. The drug was discovered by the U.S. Army at the Walter Reed Army Institute of Research in Maryland, outside Washington. Because the U.S. Army isn't allowed to engage in commercial dealings, it had to hand it over to a drug company, so it gave mefloquine to Hoffman-LaRoche, a Swiss international company. It was Hoffman-LaRoche that then took on the practice of marketing it.
Of course, the difficulty was that the drug had been developed to treat malaria. In Vietnam, soldiers were acquiring malaria at the rate of 1% of the combat unit per day, so every day a regimental commanding officer would have six of his men go down with malaria, which was not good. The parasite had developed resistance to chloroquine, so there was an urgent need for a malaria treatment drug, and that was mefloquine.
As soon as the drug got into its hands, Hoffman-LaRoche moved the goalposts because there isn't so much of a market for treatment drugs, and it marketed it as a preventive drug. That's the danger. For treatment of malaria you would tolerate a degree of, shall we say, adverse effects from the drug. When you're a healthy traveller, you want a drug that keeps you healthy and well.