Kava kava is an herb used for its sedating and muscle-relaxing properties. It is often marketed as a natural remedy for insomnia, anxiety and some types of muscle pain and has been used in the Pacific Islands as an alcohol-like drink for centuries. Despite its natural origins, kava can cause dangerous side effects in some instances. Understanding the dangers of kava kava can help consumers weigh the risks and benefits of the supplement before using it.
Cognitive Impairment
Kava’s main effects involve the central nervous system and include sedation, slowed cognitive functioning and mental relaxation. While these effects can be desirable in someone with anxiety or insomnia, they can be dangerous when performing potentially hazardous tasks like driving. Dizziness, drowsiness and loss of coordination are relatively common side effects of kava. According to RxList, citations have been issued to people whose driving abilities were impaired by drinking kava tea. Do not drive or engage in other potentially dangerous activities while under the influence of kava. Taking kava close to bedtime may help minimize the risks associated with cognitive impairment.
Liver Damage
Liver damage is among the most serious adverse effects associated with kava. According to the Centers for Disease Control, people in several countries have experienced liver failure while taking kava supplements. As a result, Canada, Switzerland, Germany and several other countries have banned the sale of kava until more is known about its effects on the liver. While liver damage is considered a rare side effect, consumers should be aware of the possibility when using kava. Avoid taking kava with substances like acetaminophen or alcohol, and only buy brands that bear the U.S. Pharmacopeia safety seal.
Drug Interactions
Like other supplements, kava can cause dangerous interactions when taken with some herbs and medications. Mixing kava with alcohol, opiates or benzodiazepines can magnify their depressant effects, leading to an increased risk for cardiac arrest, respiratory depression and death. Kava may also decrease the effectiveness of levodopa, a drug used to treat Parkinson’s disease. Other potential interactions include anti-convulsants, phenothiazines and some antipsychotic drugs.
Overdose
While rare, kava overdose can be extremely dangerous. According to eMedTV, symptoms of overdose include body spasms, red eyes, dry mouth and signs of liver damage, such as yellowing of the skin or eyes. If you suspect an overdose, seek immediate medical attention to avoid serious health consequences.
About this Author
Based in Las Vegas, Tracii Hanes is a freelance writer specializing in health and psychology with more than five years of professional experience. Her work has appeared on websites, including Wellsphere and Sazze, among others. She holds a Bachelor of Arts in communication arts from Southwestern Oklahoma State University.
