K-Mart (SHLD) pharmacies lowered the cost of its generic epinephrine auto-injector pens to $199.99 per two-pack, offering a much cheaper alternative for the life-saving allergy medicine than Mylan's (MYL) - Get Mylan N.V. (MYL) Report much-maligned EpiPen, which sells for $642.69 a pack. 

Mylan has been criticized for drastically raising the price of the treatment to over $600 now from $100 in 2009 .

Yesterday, French pharmaceutical company Sanofi  (SNY) - Get Sanofi Sponsored ADR Report sued Mylan for its alleged campaign to squash competition for the EpiPen. Sanofi says that Mylan's actions have cost the company hundreds of millions of dollars. 

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