Do you ever see this leaf? It is called the prolong life leaf (Sambung nyawa). The scientific name is Gynura procumbens. I have the tree on the side of my house, but I do not know the name. When my mother in-law visited my house, she told me that the tree was the prolong life leaf.
In Indonesia, mainly in Java, the leaves have been used as medicine for years. The leaves are super medication because this leaf is called the prolong life leaf. Sambung nyawa means extending the life of someone due to a severe disease.
_{Gynura procumbens (also known as sabuñgai or sambung nyawa, sometimes called "longevity spinach" or "longevity greens", is an edible vine found in China, Southeast Asia, and Africa. Leaves are ovate-elliptic or lanceolate, 3.5 to 8 centimetres (1+1⁄3 to 3+1⁄6 in) long, and 0.8 to 3.5 centimetres (1⁄3 to 1+1⁄3 in) wide. Flowering heads are panicled, narrow, yellow, and 1 to 1.5 centimetres (1⁄3 to 2⁄3 in) long. The plant grows wild but is also cultivated as a vegetable or medicinal plant. Its young leaves are used for cooking, such as with meat and prawns in a vegetable soup.
https://en.wikipedia.org/wiki/Gynura_procumbens}

I have never eaten the leaves. My neighbor knocked on my door yesterday. She asked for some leaves for her father, who is sick. I just realized that the leaf has some benefits for health. I often cut the stems because the stems grow fast.

Here are the benefits of longevity spinach.

• Lowering high blood pressure or hypertension
  You can eat the leaves raw or boil them and drink the water. This leaf can stop blood clotting. You can also consume the leaf extract.
• Diuretic treatment of diseases such as problems with the kidneys.
  This leaf is useful in diuretic diseases because it can remove excess salt from the blood.
• Help your digestive system
  This leaf is also useful for overcoming digestive disorders such as ulcers, stomach acid, and dysentery.
  
• Treating the esophagus.
  Esophagus or inflammation of the esophagus can be treated with this leaf.
• Tonsillitis treatment
  Tonsillitis is generally caused by a viral or bacterial infection.
• Sinusitis treatment
  This condition is where the cavity around the nose becomes inflamed. Sinusitis is a type of chronic respiratory disorder that can last up to 8 weeks.
  
• Prevent cancer
  The leaves contain antioxidants that fight free radicals. Research on animals, this leaf extract can cure cancer, but in humans there has been no research.
• Treating hemorrhoids and skin infections
  Hemorrhoids are swollen veins in the anus. For the treatment of skin infections, you mash this leaf and then paste it on the infected skin. Skin ulcers can also be treated with this leaf.
  

Pregnant women are not advised to consume the leaves. If you are in the treatment process, it is also prohibited because the use of two different types of drugs will reduce the effectiveness of the drug itself.
I almost cut down and threw this tree away because it grows fast and disturbs other plants.

_{Refference : https://doktersehat.com/herbal-a-z/pengobatan-alternatif/manfaat-daun-sambung-nyawa/}