[citation needed] Homeopathy is a pseudoscience with no evidence of effectiveness for stated claims or plausible mechanism of medicinal effect,[2][3][4] and several class action lawsuits have been filed on behalf of consumers claiming that Boiron's homeopathic products, including Children's Coldcalm and Oscillococcinum, are useless and Boiron's marketing of these products is deceptive.

"One petition complains that Boiron’s packaging for Oscillococcinum lists the alleged active ingredient – duck liver and heart – in Latin only.

The lawsuit also stated that the listed active ingredient in Oscillococcinum (Oscillo) "is actually Muscovy Duck Liver and Heart ... and has no known medicinal quality.

As part of the settlement, Boiron agreed to make specific changes to its marketing,[citation needed] including adding to their packaging notices like "These ‘Uses’ have not been evaluated by the Food and Drug Administration" and "C, K, CK, and X are homeopathic dilutions.

"[13] While the sector is in crisis following the cessation of reimbursement of homeopathic preparations by social security decided by the Minister of Health Agnès Buzyn, the Boiron group announced that its factory at Montrichard, in Loir-et-Cher had failed to find a buyer.