Cardiovascular Pharmacology: Open Access Journal is becoming more and more important in the diagnosis, categorization, and treatment of several well-known disorders. Cardiovascular Pharmacology: Open Access is a journal that intends to publish original articles, review articles, case reports, brief communications, etc. in all aspects of the discipline and make them freely accessible online to researchers all over the globe without any subscriptions. The Journal offers a special platform for researchers to share their work on a variety of Cardiovascular Pharmacology subjects. The Editorial Board members of the Cardiovascular Pharmacology: Open Access Peer Reviewed Journal provides professional support. Red blood cells resemble a doughnut without holes because they are round, flat, and indented in the middle. A blood test allows medical professionals to determine the size, shape, and condition of red blood cells. Red blood cells contain the protein haemoglobin. It transports oxygen. Additionally, red blood cells take carbon dioxide out of the body and transport it to the lungs for exhalation. The bone marrow is where red blood cells are produced. They typically survive for 120 days before passing away. The most common forms of blood cells and blood flow via the circulatory system are red blood cells (RBCs), also known as red blood cells (RBCs), red blood corpuscles (humans or other animals that do not have nuclei in red blood cells), haematids, erythroid cells or erythrocytes. Red blood cells are vertebrates' main mechanism of delivering oxygen to bodily tissues. RBCs provide oxygen to tissues by squeezing through the body's capillaries after absorbing it in fish gills and lungs. Hemoglobin, an iron-containing biomolecule that can bind oxygen and give blood and cells their red colour, is abundant in the cytoplasm of red blood cells. These haemoglobin molecules make up around 270 million of each human red blood cell's total number. Proteins and lipids make up the cell membrane, which has structural qualities that are crucial for physiological cell function, including expandability and stability as it travels through the circulatory system, particularly the capillary network. A whole blood cell test often includes checking the blood's red blood cell count. It can be used to look for signs of leukaemia, dehydration, malnutrition, and anaemia, among others. Foods high in iron help keep red blood cells in good shape. Red blood cells need vitamins in order to form healthy red blood cells. These include the B2, B12, and B3 vitamins, which may be found in foods like eggs, whole grains, and bananas. Folate is beneficial and is present in orange juice, green vegetables, dry beans, and lentils. Mature red blood cells in people are biconcave, oval, flexible discs. They lack the majority of organelles and the nucleus, which would provide haemoglobin the greatest room. They can be compared to haemoglobin sacks, which have a sack-like plasma membrane. About 2.4 million new red blood cells are created in adults per second. Cells are created in the bone marrow, circulate for around 100 to 120 days, and then macrophages recycle their components. Each cycle lasts around 60 seconds (1 minute).