Non-nucleoside reverse transcriptase inhibitors (NNRTIs) of human immunodeficiency virus (HIV-1) bind directly to the reverse transcriptase (RT) of HIV-1 and block both RNA-dependent and DNA-dependent DNA polymerase activity by cleaving the catalytic end of the enzyme without competing with substrates or nucleoside triphosphates.

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This product is a semi-synthetic ergot alkaloid derivative. It has alpha-receptor blocking and vasodilation effects. It can enhance the metabolism of brain cell energy and increase the utilization of oxygen and glucose. It promotes the conversion of neurotransmitter dopamine to increase nerve conduction, strengthens the synthesis of brain protein, and improves brain function.

This product is a semi-synthetic ergot alkaloid derivative. It has alpha-adrenaline blocking and vasodilation effects. It can enhance the metabolism of brain cell energy and increase the utilization of oxygen and glucose. It can promote the conversion of neurotransmitter dopamine to enhance nerve conduction, strengthen brain protein biosynthesis, and improve brain function.

Ca2 antagonists are highly selective for cerebral blood vessels. They inhibit the contraction of vascular smooth muscles and increase cerebral blood flow by blocking the influx of Ca2 in brain cells. They also have a neuroprotective effect, protecting the brain from damage caused by ischemia, reperfusion and hypoxia. They can non-competitively inhibit the contraction of cerebral and peripheral arterial vessels induced by K, PGF2alpha and 5-hydroxytryptamine, and inhibit neuroinflammation such as plasma protein exudation caused by trigeminal nerve stimulation, thereby preventing the occurrence of migraines and having a preventive and therapeutic effect on migraines.