Glaxo Bipolar Drug Are Being Linked To Birth Defects. Federal health officials cautioned women Friday that use of a GlaxoSmithKline drug during the first three months of pregnancy shows possible links to birth defects. Newly reported data suggest a connection between the drug Lamictal, used to treat bipolar disorder and epilepsy, … [Read more...] about Glaxo bipolar drug may be tied to defect