People suffering from hereditary blood disorders, aspirin is absolutely contraindicated. Patients with diseases of the gastrointestinal tract, liver and kidneys, and pregnant women should refrain from taking this drug. Young children (under 3 years) take aspirin also should not be.
If the drug is used as antipyretic, adult patients are usually prescribed one tablet for the reception from 2 to 4 times a day. A single dosage from 300 mg to 1 g. the Maximum daily rate of aspirin for adults is 4 g.
For children 3 to 4 years the maximum daily dosage should not exceed 0.8 g. At the age of 4-10 years, it increased up to 1 g, from 10 to 15 years — to 1.5 g. Taking aspirin also 2 to 4 times a day.
When aspirin is used as anti-inflammatory and analgesic in the treatment of diseases of the joints (arthritis, arthrosis), the selection of a single and daily dosages should be based on indicators such as effectiveness and duration of pain. In most cases, single dose is 0.5 to 1 g and the maximum daily dose should not exceed 3 g.
If aspirin is used to relieve migraine attack, a single dose of 1 g. depending on the condition of the patient can be taken during the day the same dose 1-2 times. The maximum daily dose in the range of 3 g.
In the case where the aspirin is used to thin the blood (in the prevention of reinfarction, for example), it is recommended to take it 3 times a day 100mg.
Most doctors and pharmacists recommend taking an aspirin soon after a meal, preferably in the form of powder (for fast and effective absorption by the body). To minimize the harmful effects of acetylsalicylic acid on the stomach, you must drink powder aspirin plenty of fluids. You can also use a soluble form of aspirin (the so-called effervescent aspirin).