Efficacy and safety of noophen in the treatment of chronic fatigue syndrome in patients with cerebrovascular insufficiency

Phenibut is a nootropic drug that exerts anxiolytic and antinociceptive effects by acting on the GABAB receptor and the α2-δ subunit of voltage-dependent calcium channels. An increased number of reports of dependence to and intoxication by phenibut purchased online on the one hand and the wide prescription of phenibut in Eastern Europe for more than half a century on the other hand have resulted in a number of controversies regarding its use. In this review, we have summarized currently available information from case reports of phenibut dependence and intoxication and safety data from clinical trials. We included 14 dependence and intoxication case reports (16 patients) and reviewed 11 phenibut clinical trials (583 patients). The clinical symptoms in the case reports included cardiovascular effects, insomnia, anxiety and agitation, hallucinations, and depressed level of consciousness. In addition, the doses used (0.5–100 g/day) were much higher than the recommended daily dose (0.25–2 g/day). An analysis of phenibut side effects described in the clinical trials showed adverse events in only 5.66% of patients, and the most reported side effect was somnolence (1.89%). There are discrepancies in the reported side effects of phenibut in clinical trials compared to those reported in cases of online-purchased phenibut dependence and intoxication. The current systematic review provides evidence that, at therapeutic doses, phenibut is safe and well tolerated with minor adverse effects, but questions regarding the quality of phenibut obtained online and the contribution of alcohol and other drug abuse to phenibut dependence and intoxication remain open.

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Safety and Tolerability of the Anxiolytic and Nootropic Drug Phenibut: A Systematic Review of Clinical Trials and Case Reports

Kupats

Vrubļevska

Zvejniece

et al. 2020

Pharmacopsychiatry

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Anxiety disorders as a risk factor for sleep disorders and headaches

Koreshkina¹

2021

Z. nevrol. psikhiatr. im. S.S. Korsakova

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Strategies for patient therapy with chronic brain ischemia

2020

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The article is devoted to the analysis of various pathogenetic mechanisms involved in the formation of chronic brain ischemia. The authors discuss current trends in society, leading to a wide spread of cerebrovascular diseases: an increase in life expectancy and a constantly increasing level of psychosocial stresses. The paper considers the variety of clinical manifestations, course options, the pace of development of this pathology, diagnostic and therapeutic difficulties encountered by doctors treating this category of patients. Particular attention is paid to symptoms that prevent a full course of treatment and prevention of chronic cerebral ischemia, such as asthenia and impaired statolocomotor function. The leading pathogenetic mechanisms that play a role in the formation of these syndromes are discussed. Various approaches to the treatment of this pathological condition are considered. The possibility of using drugs with a multimodal effect is discussed. An analysis of a clinical case involving a patient with a long history of chronic brain ischemia is presented. The main factors that are obstacles to a full pathogenetically directed treatment are identified and ways to solve this therapeutic problem are given. The authors conclude that it is necessary to formulate a wellthought- out therapy strategy for this pathological condition, including timely, well-considered use of drugs with a neurotrophic, neuromodulating effect, which allows further measures, including non-pharmacological approaches. Particular attention is paid to the role of social support and physical activity for the prevention of cerebrovascular diseases.

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Efficacy and safety of noophen in the treatment of chronic fatigue syndrome in patients with cerebrovascular insufficiency

Cited by 3 publications

References 9 publications

Safety and Tolerability of the Anxiolytic and Nootropic Drug Phenibut: A Systematic Review of Clinical Trials and Case Reports

Safety and Tolerability of the Anxiolytic and Nootropic Drug Phenibut: A Systematic Review of Clinical Trials and Case Reports

Anxiety disorders as a risk factor for sleep disorders and headaches

Strategies for patient therapy with chronic brain ischemia

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