How much does a box of levodopa inhalation powder spray (Inbrija) cost and how to buy it?

Levodopa inhalation powder is an innovative drug used to treat the "off" symptoms of patients with Parkinson's disease (PD). Parkinson's disease is a chronic neurological disorder characterized by symptoms such as difficulty with movement, muscle control, and balance, often caused by insufficient dopamine levels in the brain. Dopamine is an important neurotransmitter responsible for regulating movement and controlling muscle activity. Levodopa inhalation powder helps relieve movement disorders in patients with Parkinson's disease by mimicking the effects of dopamine. This drug is often used with a combination of levodopa and carbidopa (such as Duopa, Rytary, Sinemet) to treat "off" attacks (a condition in which the patient may have difficulty moving, walking, and speaking when other drugs fail). It should be noted that levodopa inhalation powder cannot prevent "off" phase attacks, but it can quickly control symptoms when "off" phase symptoms begin.

The main component of levodopa inhalation powder spray is levodopa, which belongs to the dopamine agonist class of drugs. Levodopa is converted into dopamine after entering the brain, thereby making up for the lack of dopamine in the brains of patients with Parkinson's disease. However, levodopa is easily broken down by enzymes in the body before it enters the brain, resulting in a weakened effect. To overcome this problem, levodopa is often combined with carbidopa. Carbidopa is a decarboxylase inhibitor that prevents levodopa from being broken down before entering the brain, thereby increasing the utilization of levodopa. This combination not only enhances the effectiveness of the drug, but also reduces the dosage requirement of levodopa, thereby reducing the incidence of side effects such as nausea and vomiting.

Levodopa inhalation powder spray is administered through a dedicated inhalation device. Patients should read the instructions carefully or follow the doctor's instructions before use to ensure correct use of the inhalation device. Typically, the dose per inhalation is a fixed combination of levodopa, and the specific dose needs to be adjusted based on the patient's condition and individual response. When patients with Parkinson's disease begin to relapse in their "off" phase symptoms, 84 mg should be taken by oral inhalation as needed, up to 5 times a day. The maximum dose per "off" period is 84 mg, and the maximum daily dose is 420 mg.

Although levodopa inhalation powder has a significant effect in treating Parkinson's disease "off" phase symptoms, patients still need to be aware of possible side effects during use. Common side effects include coughing, falls, upper respiratory tract infections, movement disorders, and discoloration of phlegm. In addition, drugs containing levodopa may also cause serious side effects, such as allergic edema, gastrointestinal bleeding, neuroleptic malignant syndrome, and rhabdomyolysis. Although rare, these conditions can be life-threatening and require immediate medical attention.

Overall, levodopa inhalation powder provides patients with Parkinson's disease with a fast and effective treatment option that can quickly relieve symptoms when the "off" phase symptoms begin. However, patients should pay close attention to possible side effects during use and use the medication rationally under the guidance of a doctor. Through regular follow-up visits and timely adjustments to the treatment plan, the occurrence of side effects can be minimized while ensuring the therapeutic effect of the drug.

Currently, levodopa inhalation powder spray is not yet available in China, so domestic patients cannot purchase the product directly from hospitals. It is reported that levodopa inhalation powder spray has been launched overseas, and its specifications are33mg*60 capsules, the price is about more than 6,000 yuan. If the patient needs to use levodopa inhalation powder, it is recommended to consult an overseas medical consultant for more information.

Reference link:https://www.drugs.com/cons/levodopa-oral.html