Aspirin

Generic Name: aspirin (oral) (AS pir in)
Brand Names: Arthritis Pain, Aspergum, Aspir-Low, Aspirin Lite Coat, Bayer Aspirin, Bufferin, Easprin, Ecotrin, Empirin, Fasprin, Genacote, Halfprin, Norwich Aspirin, St. Joseph Aspirin, Stanback Analgesic, Tri-Buffered Aspirin, YSP Aspirin, Zorprin

There are many brands and forms of aspirin available and not all brands are listed.

a) What is aspirin?

Aspirin is in a group of drugs called salicylates. It works by reducing substances in the body that cause pain, fever, and inflammation.

Aspirin is used to treat mild to moderate pain, and also to reduce fever or inflammation. It is sometimes used to treat or prevent heart attacks, strokes, and angina. Aspirin should be used for cardiovascular conditions only under the supervision of a doctor.

b) Important information about aspirin

~Aspirin should not be given to a child or teenager who has a fever, especially if the child also has flu symptoms or chicken pox. Aspirin can cause a serious and sometimes fatal condition called Reye's syndrome in children.

Stop using this medication and call your doctor at once if you have any symptoms of bleeding in your stomach or intestines. Symptoms include black, bloody, or tarry stools, and coughing up blood or vomit that looks like coffee grounds.

Avoid drinking alcohol while you are taking this medication. Alcohol may increase your risk of stomach bleeding.

Aspirin is sometimes used to treat or prevent heart attacks, strokes, and chest pain (angina). Aspirin should be used for cardiovascular conditions only under the supervision of a doctor.

Before taking aspirin

~~again!!!~~~

Aspirin should not be given to a child or teenager who has a fever, especially if the child also has flu symptoms or chicken pox. Aspirin can cause a serious and sometimes fatal condition called Reye's syndrome in children.

Do not use this medication if you are allergic to aspirin, or if you have:

1. -a recent history of stomach or intestinal bleeding.

2. -a bleeding disorder such as hemophilia; or

3. -an allergy to an NSAID (non-steroidal anti-inflammatory drug) such as :

Advil, Motrin,Aleve, Orudis, Indocin, Lodine, Voltaren, Toradol, Mobic, Relafen, Feldene, and others.

If you have any of these other conditions, you may need a dose adjustment or special tests to safely take aspirin:

i) asthma or seasonal allergies;
ii) stomach ulcers;
iii) liver disease;
iv) kidney disease;
v) a bleeding or blood clotting disorder;
vi) heart disease, high blood pressure, or congestive heart failure;
vii) gout
xii) nasal polyps.

If you are taking aspirin to prevent heart attack or stroke, avoid also taking ibuprofen (Advil, Motrin). Ibuprofen may make this medication less effective in protecting your heart and blood vessels.

If you must use both medications, take the ibuprofen at least 8 hours before or 30 minutes after you take the aspirin (non-enteric coated form). This medication may be harmful to an unborn baby's heart, and may also reduce birth weight or have other dangerous effects. Tell your doctor if you are pregnant or plan to become pregnant while you are taking this medication. Aspirin can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

c) How should I take aspirin?

Use aspirin exactly as directed on the label, or as it has been prescribed by your doctor. Do not use the medication in larger or smaller amounts, or use it for longer than recommended.

Take this medication with a full glass of water. Taking aspirin with food or milk can lessen stomach upset. Enteric-coated aspirin is specially formulated to be gentle on your stomach, but you may take it with food or milk if desired. Do not crush, chew, break, or open an enteric-coated or extended-release pill. Swallow the pill whole.

The enteric-coated pill has a special coating to protect your stomach. Breaking the pill could damage this coating. The extended-release tablet is specially made to release medicine slowly in the body. Breaking this pill would cause too much of the drug to be released at one time.

The chewable tablet form of aspirin must be chewed before swallowing.

Keep the orally disintegrating (effervescent) tablet in its package until you are ready to take the medicine. Open the package and peel the back cover from the tablet. Using dry hands, place the tablet into your mouth. It will begin to dissolve right away, without water. Do not swallow the tablet whole. Allow it to dissolve in your mouth without chewing.

If you need to have any type of surgery, tell the surgeon ahead of time that you are taking aspirin. You may need to stop using the medicine for a short time.

Do not take this medication if you smell a strong vinegar odor in the aspirin bottle. The medicine may no longer be effective. Store aspirin at room temperature away from moisture and heat.

p/s: hope this will help :P

Differences between aspirin and paracetamol

However, there are important differences between the effects of aspirin and those of paracetamol. Prostaglandins participate in the inflammatory response which is why it has been known to trigger symptoms in asthmatics, but paracetamol has no appreciable anti-inflammatory action and hence does not have this side-effect. Furthermore, COX also produces thromboxanes, which aid in blood clotting - aspirin reduces blood clotting, but paracetamol does not. Finally, aspirin and the other NSAIDs commonly have detrimental effects on the stomach lining, where prostaglandins serve a protective role, but paracetamol is safe.

Indeed, while aspirin acts as an irreversible inhibitor of COX and directly blocks the enzyme's active site, paracetamol indirectly blocks COX, and that this blockade is ineffective in the presence of peroxides. This might explain why paracetamol is effective in the central nervous system and in endothelial cells but not in platelets and immune cells which have high levels of peroxides.

In 2002 it was reported that paracetamol selectively blocks a variant of the COX enzyme that was different from the then known variants COX-1 and COX-2. This enzyme, which is only expressed in the brain and the spinal cord, is now referred to as COX-3. Its exact mechanism of action is still poorly understood, but future research may provide further insight into how it works.

A single study has shown that administration of paracetamol increases the bioavailability of serotonin (5-HT) in rats, but the mechanism is unknown and untested in humans.

please noted that COX= CycloOXygenase (COX)