Pharmaceutical Raw Materials

Endogenous H1 and H2 histamine receptor agonists; H1 activates and moves Ca2 +; H2 activates and stimulates the activity of adenylate cyclase in neurons; Activation of NO synthase; Vasodilators.

Iokojic acid is a contrast agent molecule.

Vitamin D4 is a vitamin D, a hydroxy seco-steroid and a seco-ergostane.

This product is an important steroidal saponin and an important raw material for semi synthetic steroids.

Metoprolol, also known as metoprolol or metoprolol. In the United States, most of them are sold under the trade name Lopressor, which is selective β 1-receptor blocker. It is used to treat hypertension, angina pectoris and many symptoms related to tachycardia. The drug is also used to prevent cardiovascular disease after myocardial infarction and migraine related headache symptoms. Metoprolol can be administered orally or intravenously for several months. The general dosage is twice a day. It also has a long-term formula that can be used once a day. Metoprolol can also be mixed with hydrochlorothiazide to make a single compound tablet. Common side effects include insomnia, burnout, fainting and gastrointestinal discomfort. If the dose is too large, it may cause serious toxic reactions. At present, the possibility that the drug may cause harm during pregnancy has not been ruled out, and the current study has not shown the impact of drug use during lactation. If the patient has liver disease or asthma at the same time, close observation is required. After stopping taking, various side effects will be relieved, and any health crisis caused by this drug will disappear. The first metoprolol was made in 1969. It is not only a drug in the standard list of essential drugs of the World Health Organization, but also an extremely important drug in basic medical treatment, but also a common name drug. In 2013, metoprolol ranked 19th among the most frequently prescribed drugs in the United States.