Mechanism of Action and Pharmacodynamics
The pharmacodynamics of valerian preparations are mediated by a complex of biologically active substances. The drug exerts a pronounced sedative effect, reducing central nervous system excitability. Notably, valerian has the ability to potentiate (enhance) the effects of hypnotics.
In addition, the agent exhibits spasmolytic activity on the smooth muscle of internal organs. Alongside its CNS effects, valerian rhizomes and roots possess a hydrocholeretic effect, increasing bile volume primarily through the aqueous component, enhancing its fluidity and reducing viscosity.
Pharmacological Effects
Within the complex pharmacological profile of herbal sedatives, valerian preparations are recognized as safer compared to bromides. They demonstrate significant therapeutic efficacy while being virtually devoid of serious adverse effects.
The clinical response to the drug may depend on the patient's typological characteristics: individuals with a weak nervous system type experience a more pronounced sedative effect.
Indications for Use
According to medical indications, valerian tincture is prescribed for:
- Neuroses of various origins.
- Smooth muscle spasms of internal organs.
- The need to stimulate bile production as a hydrocholeretic agent (increasing the aqueous component of bile, preventing gallstone formation).
Adverse Effects and Contraindications
Valerian preparations are characterized by high safety and are virtually devoid of serious adverse effects, distinguishing them favorably from synthetic sedatives and bromides. Methodological materials report no severe systemic or toxic reactions when dosing guidelines are followed.
Prescribing and Administration Features
The medicinal form of the drug is a tincture (a liquid ethanol-based plant extract). The standard adult dosage regimen is 25–30 drops orally.
In clinical practice, it is important to consider the subjective factor when evaluating the efficacy of sedatives: the clinical outcome depends not only on the chemical composition but also on the patient's attitude toward the medication (belief in the drug's efficacy).