Pfizer, United Laboratories locked in a PR fight over high blood pressure drug

Arthur Sales

Pfizer, the world’s largest pharmaceutical company best known for introducing Viagra, the golden standard for erectile dysfunction, and Therapharma, a division of United Laboratories, the Philippines’ biggest drug manufacturing firm, are engaged in a public relations skirmish over the efficacy and pricing of amlidopine, reputed to be the only such product that is approved and sold in 88 countries, including the Philippines, where about seven million Filipinos have been found under a national nutrition and health survey to be suffering from hypertension as well as a Philippine Department of Health findings that only 13.6 percent of hypertensives are aware of their condition since the disease causes minimal or no symptoms at all, cannot be cured completely and is a life-long ailment.

Amlidopine, a product of more than 15 years of expensive research and development by Pfizer, has become the most-sought-after medication against high blood pressure because it is also indicated for the treatment of myocardial ischemia and stable angina pectores.

Pfizer manufactures and markets amlodipine besylate under the brand name Norvasc at R44.75 per five-milligram tablet but has since offered a 50 percent discount. United Laboratories imports amlodipine camsylate under the Amvasc brand from Hanmi Pharma Co. of South Korea and retails the 5 mg. tablet at R17.50.

Philippine Vice President Noli de Castro called on Pfizer to be transparent and to publicly disclose why it sells Norvasc at a much higher price. Robert Pagdanganan, chairman of Philippine International Trading Corp. (PITC), said the local firm found out that the 5-mg. tablet sells at ten pesos in Pakistan and six pesos in India.

Pfizer’s discount of 50 percent for Norvasc may be generous but the resulting price of R22.50 is still more than four times the price of the Norvasc version sold in India, according to Shalimar Vitan, campaign coordinator in the Philippines for Oxfam, the London-based relief and development non-governmental organization with offices all over the world. Oxfam found out that 2005 sales of Norvasc in the Philippines totaled R1.185 billion, growing at 34.5 percent.

Patients suffering from hypertension as well as consumer of Norvasc have filed a motion to intervene in a case filed last Nov. 14 at the Makati Regional Trial Court under Judge Cesar Untalan.

Therapharma points out that both Norvasc and Amvasc carry the same active ingredient, which is amlidopine, but with different salts (Besylate for Norvasc and Camsylate for Amvasc) and that the difference in salt formulation does not change the efficacy, safety and overall clinical value of amlidopine but that it changes the pricing to make Amvac 60 percent more affordable.

This is not the first time that Pfizer has run afoul of regulators of the industry. A few years ago, the British Medical Journal reported that the board of directors of the Association of British Pharmaceutical Industry reprimanded Pfizer for breaching the industry’s code of conduct by promoting for "unapproved uses" several medicines, including Isitin, which is known as Norvasc in the United States.

Leading the onslaught in the Philippine Congress against high prices of medicine through the introduction of a piece of legislation together with other congressmen is Iloilo Rep. Fergenal Biron, a doctor of medicine whose family runs a drug store. The bill seeks the creation of a drug price regulatory board with the mandate of regulating prices of selected drugs because the passage of the Generics Act of 1987 had not resulted in lowering prices of medicine.

More than five years ago, the US government, in pursuit of the Doha Declaration sanctioned at the 2001 World Trade Organization (WTO) summit at the capital city of Qatar, has been prodding developing countries to accept its offer to sign away bilateral trade agreements that could mean billions of dollars in trade benefits for them but would take away the availability of cheap medicine from the reach of poor people if they refuse to do so.

http://www.mb.com.ph/issues/2006/12/09/BSNS2006120981972.html