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Levothyrox Side Effects: Search at the Merck Laboratory

The search takes place in the context of an open preliminary inquiry for "aggravated deception, involuntary assaults on physical integrity and endangering the lives of others".

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Levothyrox Side Effects: Search at the Merck Laboratory
A search was conducted Tuesday, October 3, at French headquarters of German laboratory Merck in Lyon, which manufactures drug for thyroid Levothyrox, whose new formula is subject of complaints about heavy side effects, said a source close to survey, confirming information from regional daily Le Progrès.

The search was carried out by gendarmes of Central Office for Combating Environmental and Public Health Inquiries in an open preliminary investigation for "aggravated deceit, involuntary attacks on physical integrity and danger of life of ors ". At end of September, 62 complaints were lodged and entrusted to Public Health Pole of Tribunal de Grande Instance, Marseille.

Read also: Levothyrox controversy explained in six points

Health authorities estimate more than nine thousand adverse reaction reports for new Levothyrox formula, marketed since March. In total, three million patients take Levothyrox in France ( world's largest market) to treat hypothyroidism or after an operation of thyroid cancer.

Return of old formula to pharmacies

The new formulation of Levothyrox has been claimed by National Agency for Safety of Medicines and Health Products (ANSM) in laboratory in 2012 in order to make product more stable. The change of formula does not concern active principle but on or substances, excipients.

Faced with anger of patients reporting side effects, Health Minister Agnès Buzyn had announced arrival in pharmacies of alternative medicines as well as return of old formula of Levothyrox, available since Monday under name of " Euthyrox.

Read also: Levothyrox: crisis forces authorities to move

According to ANSM, anor drug, L-Thyroxin Henning (Sanofi laboratory), will be available from mid-October. A drug in form of drops, L-Thyroxine SERB (Serb laboratory), also exists, but it is prescribed as a priority for children and people with swallowing disorders.

Finally, Managing Director of ANSM announced on Monday that arrival of anor equivalent drug was studied for November: "It is a drug used in a European country, which does not have same excipients" as new formula of Levothyrox.


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