How many grams of nightshade for insomnia should be used at one time?

Nightshade for insomnia dosage of 9-15 grams at a time or as directed by a doctor.
Nightshade is the dried vine stem of Polygonum multiflorum. It is sweet in taste and flat in nature, with the effects of nourishing the blood and calming the mind (stabilizing the mind and soothing the emotions by nourishing the blood), dispelling the wind and clearing the channels (dispelling the wind and clearing the meridians). It treats insomnia, excessive dreaming, blood deficiency and body pain, rheumatism and paralysis, rubella and itching. It is more commonly used by patients suffering from insomnia and rheumatism.
Nightshade decoction or with mother-of-pearl, danshen decoction to treat deficiency and insomnia (insomnia due to deficiency and heat annoyance) dreamy; and cangzhi decoction for external washing: treatment of itchy skin.
It is recommended that patients use medication under the guidance of a doctor, do not take medication on your own, so as not to delay or aggravate the condition.