How pain killer works: understanding the mechanism.



Pain and pleasure are two significant aspects of life. Good news, success, good health, and wealth bring joy, while heart-break, losing a loved one, or getting a physical injury causes pain and grief.

Pain is a sharp sense of discomfort due to an internal or external stimulus. It can be mild such as a pinprick, mild burn, or a small cut, or it could be excruciating, such as blast injuries, severe infections, or chronic illnesses.

Pain is divided into two types: physical or emotional. Being disheartened or being sad can be emotional pain, which cannot be cured by medicine alone. But when the body gets injured by any foreign object, it experiences physical pain and may require assistance for recovery and rehabilitation.

Pain can also be acute (Appendicitis pain) or chronic (Migraine pain). 

How Does Pain Work?

When a body is subjected to an external or internal stimulus, a special cell called nociceptor sends a signal to the brain. The brain then perceives the signal as pain and reverts to the pain receptor located at the point of damage. These pain receptors identify the pain signals and help to release hormones, such as epinephrine, to counter the pain and help the body recover. 

However, pain receptors may not always be able to counteract pain and may require assistance from external agents known as pain killers. Ibuprofen and paracetamol are some examples of painkillers. Most painkillers are scheduled drugs and require a prescription for purchase. These painkillers are available in retail and online pharmacies in India.

Note: US FDA has banned the drug Ibuprofen because prolonged use of this medicine can lead to kidney and liver failure, ulcer, or pancreas damage. However, it is not banned in India and sold by many pharmacies across the country.

What is Painkiller?

A painkiller is a drug that is specially designed to treat pain. When the body is in pain and needs instant relief, painkillers help by providing relief. Painkillers can be consumed orally (tablets or capsules) or through injection. They are also available in the form of an ointment or cream.

There are several painkillers available in the market. Ibuprofen, paracetamol, and aspirin are some examples of painkillers. Three major types of painkillers available are:

1) Non-steroidal anti-inflammatory drugs (NSAIDs): These drugs help the blood from clotting. It blocks the cox enzyme that restricts further development of the prostaglandin compound and eventually results in the reduction of pain and inflammation. The concerned doctor generally prescribes these painkillers to the heart patients pursuing a history of a heart attack.

2) Paracetamol: Paracetamol is used for treating pain as well as high body temperature. It works as same as NSAIDs.

3) Opioids: Opioids painkillers are divided into two parts, week and strong opioids. Week opioids help in treating severe pain, which can make the patient significantly addicted to it with an adverse effect. Strong opioids are used for treating hospital in-patients.

How Do Painkillers Work?

When a sharp object damages the body, the nociceptor releases arachidonic acid. Arachidonic acid molecules attach to the enzyme known as cox, forming prostaglandin compounds. These compounds enhance the sensitivity of the nociceptor that increases the pain. In this situation, the painkiller works by attaching to the cox enzyme, restricting the invasion of arachidonic acid. This action controls the prostaglandin compound to produce sensitivity to the nociceptor. Eventually, the pain subsides by not receiving any signal from the defused nociceptor cells.

Conclusion

Painkillers are helpful when used in moderation and under a doctor’s supervision. Prolonged and excessive use of painkillers can lead to serious, sometimes life-threatening, health conditions such as liver and kidney failure. Home remedies can help in effective pain management without side effects. 

 

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