The FDA is currently investigating the causes of the sensitivities or allergic type reactions being had by patients to an injection of the heparin sodium drug, which is an anticoagulant, or blood thinner. This drug has seen a recent surge in dangerous reaction, which may also include a dangerous drop in blood pressure that may require medical intervention to treat.

The FDA is currently investigating this problem to determine the causes of the reaction and to determine whether a large scale recall of the drug needs to be enforced. The drug is considered medically necessary, and a recall of the affected product, which comes from the Baxter Healthcare company, would cause a potentially dangerous shortage of the drug.

As of now, nine lots of the heparin sodium drug have been voluntarily recalled by Baxter Healthcare, and the FDA is investigating the cause of the reaction to the drug from these lots. They have sent for other data regarding the administration of bolus doses from other companies, and are trying to determine whether the fault is with the large dose of the heparin sodium itself, or whether the danger lies with the Baxter Healthcare company.