Article in English: Levodopa is a precursor of dopamine, meaning it can be transformed into dopamine in the brain. Taking levodopa increases the amount of dopamine your body produces.  You may be prescribed this medication by your doctor if you have a disease like Parkinson's or restless leg syndrome. Side effects include nausea, vomiting, dry mouth, impairment of voluntary movement, and dizziness. It can also cause hallucinations and confusion in some people. While levodopa increases the amount of dopamine your body makes, dopamine agonists actually up the number of receptors to "catch" the dopamine. You can take this medication in place of or in addition to levodopa.  The 2 most commonly prescribed dopamine agonists are pramipexole and ropinirole. The main side effect of these medications is daytime sleepiness, which may even cause you to fall asleep against your will. This medication is also used for diseases like Parkinson's and restless leg syndrome. The velvet bean  naturally contains levodopa.  Like stronger prescription medications, that means it may increase dopamine in your brain. Look for a supplement that contains extract of Mucuna pruriens with 15% L-dopa or levodopa. Take 300 milligrams 2 times a day of this extract. Always talk to your doctor before beginning any supplement, especially one so similar to a prescription medication. Golden root, also known as Rhodiola rosea, may increase dopamine activity in the brain. Try starting on 200 mg of a supplement with Rhodiola rosea extract. Look for one that has 2-3% rosavin and 0.8-1% salidroside. Take this supplement once a day. You can take as much as 600 milligrams in one day.  Talk to your doctor before starting this supplement. Take it 30 minutes before you eat early in the day. It can cause insomnia if you take it too late in the day.

Summary in Vietnamese:
Uống levodopa để tăng mức dopamine trong não. Hỏi về dopamine agonist để tăng các thụ thể dopamine. Thử dùng thực phẩm bổ sung có thành phần đậu mèo. Cân nhắc uống thực phẩm bổ sung với chiết xuất của cây rễ vàng.