What are the absolute contraindications to prescribing vinpocetine?

The provided materials do not list absolute contraindications for vinpocetine. It is noted that stenocclusive lesions of extra- and intracranial vessels require special caution due to the risk of the steal syndrome. Criteria for administration in the early and late recovery periods of ischemic stroke or transient ischemic attack include: absence of hemodynamically significant steno-occlusive lesions in precerebral and cerebral arteries, low risk of hemorrhagic complications, and no requirement for heparin or anticoagulant therapy.

Why does vinpocetine not cause the "steal phenomenon"?

The drug does not significantly affect blood flow in intact (healthy) vessels, selectively acting on blood vessels within ischemic areas of the brain.

What biochemical process underlies the myotropic action of vinpocetine?

Inhibition of phosphodiesterase, which leads to cAMP accumulation and relaxation of vascular smooth muscle.

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Vinpocetine

Vinpocetinum

For medical students2 min readUpdated 2026-10-10

Vinpocetine is a semi-synthetic derivative of the alkaloid vincamine, extracted from the lesser periwinkle plant (Vinca minor L.). The drug belongs to the class of agents that improve cerebral blood flow, exhibiting pronounced myotropic spasmolytic and neuroprotective activity.

Pharmacological groupAgents affecting the cardiovascular system (periwinkle alkaloid derivatives).

Mechanism of actionInhibition of phosphodiesterase, leading to cAMP accumulation in vascular smooth muscle.

Formulations5 mg tablets; 0.5% concentrate for solution for infusion (2 mL ampoules).

HemodynamicsImprovement of blood rheology, increased erythrocyte elasticity, absence of the "steal phenomenon".

Mechanism of Action

The drug's action is based on a myotropic spasmolytic effect. Vinpocetine inhibits the enzyme phosphodiesterase (PDE), which leads to the intracellular accumulation of cyclic AMP (cAMP) in the smooth muscle cells of the vascular wall. This causes smooth muscle relaxation and dilation of blood vessels, predominantly within the cerebral circulation.

Pharmacological Effects

The drug exerts a complex effect on cerebral hemodynamics and metabolism:

Vascular effect: Selective dilation of cerebral blood vessels without the "steal phenomenon" (blood flow increases specifically in ischemic areas).
Rheological effect: Reduction of blood viscosity, decreased platelet aggregation, and increased erythrocyte deformability.
Neuroprotection: Increased resistance of neurons to hypoxia, improved glucose uptake and metabolism, and a metabolic shift toward aerobic pathways.

Indications

Vinpocetine is used for chronic cerebrovascular insufficiency, during the recovery period following a stroke, and for neuropsychiatric disorders associated with cerebrovascular insufficiency. It is also used in ophthalmology (vascular eye diseases) and otolaryngology (hearing loss of vascular or toxic origin).

Adverse Effects

Common adverse effects include decreased blood pressure, nausea, and dizziness. Rapid intravenous administration may cause cardiac arrhythmias (tachycardia, extrasystoles) and slowed intraventricular conduction.

Administration

The drug is taken orally in long-term courses (1–2 tablets of 5 mg 3 times daily after meals). When necessary, it is administered as an intravenous infusion: 4 mL of 0.5% concentrate (20 mg) is diluted in 500 mL of 0.9% NaCl solution. The infusion rate should not exceed 80 drops per minute.

Mnemonic

Vinpocetine — "Vin" (vincamine/periwinkle) + "Po" (potentiates) + "C" (cAMP accumulation) + "E" (enzyme PDE inhibition).

Frequently asked questions

What are the absolute contraindications to prescribing vinpocetine?: The provided materials do not list absolute contraindications for vinpocetine. It is noted that stenocclusive lesions of extra- and intracranial vessels require special caution due to the risk of the steal syndrome. Criteria for administration in the early and late recovery periods of ischemic stroke or transient ischemic attack include: absence of hemodynamically significant steno-occlusive lesions in precerebral and cerebral arteries, low risk of hemorrhagic complications, and no requirement for heparin or anticoagulant therapy.
Why does vinpocetine not cause the "steal phenomenon"?: The drug does not significantly affect blood flow in intact (healthy) vessels, selectively acting on blood vessels within ischemic areas of the brain.
What biochemical process underlies the myotropic action of vinpocetine?: Inhibition of phosphodiesterase, which leads to cAMP accumulation and relaxation of vascular smooth muscle.
What complications can occur with overly rapid intravenous administration?: Tachycardia, extrasystoles, and slowed intraventricular conduction may occur.

Go deeper

Comparative characteristics of vinpocetine and nicergoline.
Mechanisms of neuroprotection in cerebral ischemia: the role of NMDA receptor antagonists.
Classification of vasodilators improving cerebral blood flow.
The role of calcium channel blockers (nimodipine) in the treatment of subarachnoid hemorrhage.
Effects of ergot alkaloid derivatives on peripheral circulation.