The formula for simple interest is I = prt where I is the simple interest, p is the principal, r is the rate of interest, and t is the period of time.
No anti-anxiety medication is completely safe during pregnancy, but some are much safer than others. The least safe anti-anxiety medications during pregnancy are benzodiazepines, such as Xanax and Valium. They inhibit brain function by enhancing the potency of the neurotransmitter GABA. According to a study published in the November 2007 issue of Pharmacoepidemiology and Drug Safety, benzodiazepines increase the risk of low birth weight, preterm birth and congenital malformations.
In one German study, a specially formulated lavender pill (not available in the U.S.) was shown to reduce anxiety symptoms in people with Generalized Anxiety Disorder (GAD) as effectively as lorazepam (brand name: Ativan), an anti-anxiety medication in the same class as Valium.