Evidence supporting the use of: Lavender
For the health condition: Irritability

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Lavender (Lavandula angustifolia) has been traditionally used for centuries to promote relaxation and alleviate symptoms of irritability, anxiety, and nervous tension. In recent years, scientific research has provided moderate evidence supporting its efficacy for these purposes. Studies indicate that both inhalation of lavender essential oil and oral administration of standardized lavender extracts (such as Silexan) may have calming effects on the central nervous system. Randomized controlled trials have shown that lavender can reduce symptoms of anxiety, restlessness, and mild agitation, which often overlap with or contribute to irritability. For example, a 2010 study published in Phytomedicine found that Silexan significantly reduced anxiety-related symptoms, including irritability, compared to placebo.

The mechanism of action is believed to involve modulation of neurotransmitter activity, particularly the inhibition of voltage-dependent calcium channels and interaction with serotonin receptors. While most studies focus on anxiety or agitation, these conditions are closely related to irritability, and thus, the calming effect of lavender is often extrapolated to support its use for irritability.

However, while the evidence is promising, it is not yet conclusive, and further high-quality, large-scale studies are needed to confirm its efficacy specifically for irritability. Overall, lavender’s use for supporting irritability is justified by both tradition and moderate scientific validation.

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