JP2011219470A - Antipyretic analgesic composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antipyretic analgesic composition which is highly safe with suppressed stomach disorders, excellent in effectiveness, and improved in stability, taking property and productivity.SOLUTION: The antipyretic analgesic composition contains (A) ibuprofen, (B) acetaminophen and (C) magnesium aluminometasilicate, and has ≥0.75 blended mass ratio of the component (B) over the component (A) expressed by (B)/(A), and 0.3-1.5 blended mass ratio of the component (C) over the component (A) expressed by (C)/(A).

Description

  The present invention relates to an antipyretic analgesic composition that suppresses gastric disorders derived from ibuprofen and is excellent in stability.

  Ibuprofen has excellent antipyretic, analgesic and anti-inflammatory effects and is widely used as a non-steroidal drug, and various studies have been made. In particular, regarding the effectiveness, a combination with various other components has been studied as a means for improving the effect, and a combination of ibuprofen and an aniline derivative antipyretic analgesic such as acetaminophen (Patent Document 1). -3: Japanese Patent Application Laid-Open No. 56-97224, Japanese Patent Application Laid-Open No. 5-246845, Japanese Patent Application Laid-Open No. 5-148139) have been proposed.

  However, it has been pointed out that when ibuprofen is orally administered, stomach discomfort, stomach pain, nausea, etc. may occur, causing gastrointestinal disorders as side effects. For this purpose, antipyretic analgesics with excellent efficacy and reduced acute toxicity by combining ibuprofen and aniline derivative antipyretic analgesics for the purpose of suppressing gastrointestinal disorders due to oral administration of ibuprofen. (Patent Documents 1, 4, 5: JP-A-56-97224, JP-A-56-154416, JP-A-59-104315) and a technique used in combination with a salicylic acid drug (Patent Document 6: Japanese Laid-Open Patent Publication No. 61-134315) and a technique (Patent Document 7: Japanese Laid-Open Patent Publication No. 63-198620) used in combination with an antacid and / or a mucosa coating agent have been proposed. However, a method for suppressing gastrointestinal disorders of ibuprofen by a simpler method has been desired.

  The mechanism of action of ibuprofen-induced gastric damage is thought to be due to suppression of the production of prostaglandins (PG), which is responsible for the protective function of the stomach, and direct stimulation of gastric wall cells. Therefore, in order to dissolve ibuprofen quickly and shorten gastric residence time, to reduce gastric damage and reduce gastric damage, ibuprofen and acetaminophen are added to magnesium-based antacids. A technique (Patent Document 3: Japanese Patent Laid-Open No. Hei 5-148139) and the like that have both safety and effectiveness have been proposed. However, further suppression effect of gastric damage by ibuprofen has been desired.

JP-A-56-97224 JP-A-5-246845 JP-A-5-148139 JP-A-56-154416 JP 59-104315 A JP 61-134315 A JP 63-198620 A

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an antipyretic analgesic that suppresses gastric damage caused by ibuprofen, is excellent in effectiveness, and has improved stability, ingestibility and manufacturability.

  As described above, antacids are one of the important means of suppressing ibuprofen gastric damage, but in order to raise the pH in the stomach to the dissolution zone of ibuprofen, a considerable amount of antacids, for example, It is a general understanding of those skilled in the art that an amount of about 300 mg (a single dose for humans) is required. On the other hand, when a large amount of antacid is blended, the amount of the preparation is increased and the dosage is significantly reduced. In addition, ibuprofen and antacids cause significant compounding changes, so that when antacids are present in large quantities, the stability is significantly reduced. The present inventors can suppress stomach damage caused by ibuprofen by combining a specific amount of acetaminophen and a specific antacid in combination with ibuprofen. Has been found to improve. In addition, the above-mentioned inhibitory effect of ibuprofen on gastric damage can be obtained even when the amount of antacid used is small, and the amount of antacid against ibuprofen can be reduced. As a result, the stability of the preparation is further improved. The present inventors have found that an antipyretic analgesic composition excellent in dosage and manufacturability can be obtained, and led to the present invention.

Accordingly, the present invention provides the following antipyretic analgesic composition.
[1]. It contains (A) ibuprofen, (B) acetaminophen, and (C) magnesium aluminate metasilicate, and the blending mass ratio of the component (B) to the component (A) represented by (B) / (A) is 0. An antipyretic analgesic composition having a blending mass ratio of the component (C) to the component (A) represented by (C) / (A) of 0.3 to 1.5.
[2]. The antipyretic analgesic composition according to [1], which is a solid preparation in which the components (A), (B) and (C) are mixed.
[3]. Antipyretic analgesia according to [1] or [2], wherein the blending mass ratio of component (B) to component (A) represented by (B) / (A) is 0.75 to 1.0 Composition.

  According to the present invention, ibuprofen suppresses gastric injury, effective pharmaceutical properties, stability of the preparation, ingestibility, manufacturability (for example, it can be produced as a single-layer tablet without requiring any special device) Can be provided.

  The antipyretic analgesic composition of the present invention comprises (A) ibuprofen, (B) acetaminophen, and (C) magnesium aluminate metasilicate, which is represented by (B) / (A) component (A) ( The blending mass ratio of the component (B) is 0.75 or more, and the blending mass ratio of the component (C) to the component (A) represented by (C) / (A) is 0.3 to 1.5. It is.

(A) Ibuprofen The component (A) ibuprofen is one of antipyretic analgesic components, and is a drug used as one of the main components of an antipyretic analgesic that suppresses symptoms such as fever and headache. In the present invention, ibuprofen (2- (4-isobutylphenyl) propionic acid) and pharmaceutically acceptable salts thereof can be used. The amount of the component (A) is usually 1.0 to 50% by mass in the composition, preferably 5 to 45% by mass, more preferably 8 to 45% by mass, and further preferably 10 to 40% by mass. . If the amount is too large, it may lead to tableting troubles and the like, and if the amount is too small, the dosage increases and the dosage may be hindered. Moreover, it is preferable that the dosage with respect to a person is normally 130-200 mg / time in an adult. Effectiveness is sufficiently obtained at 130 mg / dose or more, and by setting it to 200 mg / dose or less, the occurrence of side effects can be suppressed, and an antipyretic analgesic safe for the human body can be obtained.

(B) Acetaminophen (B) The acetaminophen component is also an antipyretic analgesic component, and is a drug used as one of the main components of an antipyretic analgesic that suppresses symptoms such as fever and headache. In the present invention, by blending a specific amount of acetaminophen with ibuprofen, gastric disorders derived from ibuprofen can be suppressed, and the effectiveness can be improved. As the component (B), acetaminophen (N- (4-hydroxyphenyl) acetamide) and pharmaceutically acceptable salts thereof can be used. (B) As a compounding quantity of a component, the compounding mass ratio of the (B) component with respect to the (A) component represented by (B) / (A) is 0.75 or more, and 0.75-2 are preferable, More preferably, it is 0.75-1.0, More preferably, it is 0.8-1.0. By setting the blending mass ratio of acetaminophen to 0.75 or more, the effect of suppressing gastric damage by ibuprofen is improved, and the action tends to be enhanced as the blending ratio of acetaminophen increases. When the ratio is less than 0.75, this effect is insufficient. When the ratio exceeds 2, the gastric disorder tends to be reduced, but the dose may increase and the dosage may be deteriorated. . In addition, the effectiveness of ibuprofen is improved by combining any amount of acetaminophen with ibuprofen. An effect is recognized and it is preferable that the upper limit of (B) / (A) is 1.0. (B) Although the compounding quantity of the composition of a component is dependent on the said compounding ratio, it is 5-60 mass% in a composition normally, 8-55 mass% is preferable, and 10-50 mass% is more preferable. In addition, the dose for humans is usually 65 to 400 mg / dose for adults, preferably 95 to 400 mg / dose, more preferably 100 to 300 mg / dose, and further preferably 130 to 200 mg / dose.

(C) Magnesium aluminate metasilicate (antacid)
Antacids are alkaline agents that have the effect of neutralizing stomach acid and raising the pH. The antipyretic analgesic composition of the present invention essentially comprises magnesium aluminate metasilicate.

  The blending amount of the component (C) is such that the blending mass ratio of the component (C) to the component (A) represented by (C) / (A) is 0.3 to 1.5, preferably 0.7 to 1.2. When the blending ratio of the component (C) is less than 0.3, the effect of suppressing gastric damage is reduced, whereas when the blending ratio exceeds 1.5, the stability is lowered. Gastric damage due to ibuprofen is thought to occur when ibuprofen from an undissolved individual stays in the stomach and directly contacts the stomach wall. When administered simultaneously with ibuprofen, antacids neutralize the acid in the stomach due to its antacid effect and improve the solubility by making the pH higher than the pKa of ibuprofen, so that solid ibuprofen and gastric wall In order to reduce the chance of contact, it is considered to have an effect of suppressing stomach damage. Although it was thought that a sufficient amount of an antacid was necessary for the above effect, in the present invention, magnesium metasilicate aluminate has an effect of suppressing stomach damage even when blended in a small amount. It is. Moreover, since the compounding quantity of an antacid can be made into a small quantity, even if it uses with ibuprofen, stability is favorable and it is excellent also in ingestibility and manufacturability. (C) Although the compounding quantity of the composition of a component is dependent on the said compounding ratio, it is 4-45 mass% in a composition normally, 6-45 mass% is preferable, and 8-40 mass% is more preferable. In addition, the dose for humans is usually 15 to 300 mg / dose for adults, preferably 35 to 300 mg / dose, more preferably 65 to 300 mg / dose, and further preferably 90 to 240 mg / dose.

  In the present invention, an antacid other than the magnesium aluminate metasilicate as the component (C) can be blended within a range that does not impair the effects of the present invention. Other antacids include cumulite, dihydroxyaluminum aminoacetate (aluminum glycinate), aluminum hydroxide gel, dry aluminum hydroxide gel, aluminum silicate, synthetic aluminum silicate, magnesium oxide, magnesium silicate, carbonic acid Examples include magnesium, magnesium hydroxide, synthetic hydrotalcite, calcium carbonate, sodium hydrogen carbonate, anhydrous calcium hydrogen phosphate, and the like. The compounding amount of the antacid other than the component (C) is the composition of the metal [M] of the antacid other than the component (C) and the aluminum [Al] contained in the aluminum-based antacid (C). The molar ratio ([M] / [Al]) is preferably less than 1, more preferably less than 0.6, and still more preferably less than 0.3. By making this molar ratio less than 1, the inhibitory effect of gastric disorder is more exhibited, and the stability of the preparation becomes particularly good.

  In the antipyretic analgesic composition of the present invention, optional components other than the above components can be blended within a range not impairing the effects of the present invention. Optional ingredients include binders, excipients, lubricants, fragrances, flavoring agents (sweeteners, acidulants, etc.), pigments, stabilizers, coating agents, plasticizers, hiding agents, etc. An appropriate amount can be used alone or in appropriate combination of two or more.

  Specifically, starch, pregelatinized starch, sucrose, gelatin, gum arabic powder, methylcellulose, polyvinylpyrrolidone, pullulan, dextrin and the like can be used as the binder. As the excipient, low-substituted hydroxypropylcellulose, corn starch, lactose, corn starch, talc, crystalline cellulose (such as Theolas), powdered sugar, mannitol, light anhydrous silicic acid and the like can be used. Examples of the lubricant include magnesium stearate, calcium stearate, polyethylene glycol, talc, stearic acid, sucrose fatty acid ester, sodium stearyl fumarate and the like. Examples of the fragrances include menthol, limonene, plant essential oil (mint oil, mint oil, lychee oil, orange oil, lemon oil, etc.) and the like. Examples of the sweetener include saccharin sodium, aspartame, stevia, dipotassium glycyrrhizinate, acesulfame potassium, thaumatin, sucralose and the like. As the acidulant, citric acid, tartaric acid, malic acid, succinic acid, fumaric acid, lactic acid, or a salt thereof can be used. As the coating agent, hydroxypropylmethylcellulose, hydroxyethylcellulose, polyvinyl alcohol, carboxymethylcellulose, ethylcellulose and the like (trade names: Opadry, Nippon Colorcon, etc.) can be used. As the plasticizer, polyethylene glycol, triacetin or the like can be used. As the concealing agent, titanium oxide, talc, or the like can be used.

  Since the antipyretic analgesic composition of the present invention can be made into a solid preparation and is excellent in stability even when mixed with ibuprofen, it is a composition in which the components (A), (B) and (C) are mixed or uniformly mixed. be able to. As the solid preparation, the components (A) to (C) and optional components are mixed as necessary, and the mixture is filled in a tableting machine and tableted to obtain a tablet. Moreover, it can also granulate with a granulator and can also be used as a granule and a fine granule. In particular, in the case of a tablet, it can be made into a single layer tablet or the like, and even when it is made into a multilayer tablet, the components (A), (B) and (C) can be blended in the same layer.

  More specifically, when preparing a tablet, the following method is mentioned. (A) A powder mixture of ibuprofen and (B) acetaminophen, and low-substituted hydroxypropylcellulose, corn starch, mannitol, lactose and other excipients are charged into a granulator and sprayed with a hydroxypropylcellulose aqueous solution. (C) Magnesium aluminate metasilicate is mixed with the granulated product obtained by granulation. In this case, excipients such as low-substituted hydroxypropylcellulose, corn starch, mannitol, and lactose, and lubricants such as magnesium stearate may be mixed. Tablets can be obtained by tableting the resulting mixture with a tableting machine. Moreover, the tablet surface can be coated with the coating agent containing polyvinyl alcohol etc. to the obtained tablet, and it can also be set as a coated tablet. In addition, 5-60 mass% is preferable in a composition, and the compounding quantity of a hydroxypropyl cellulose has preferable 2-10 mass% in the composition.

  EXAMPLES Hereinafter, although an Example and a comparative example are shown and this invention is demonstrated concretely, this invention is not restrict | limited to the following Example.

[Examples 1-7, Comparative Examples 1-13]
Each component was mixed with the components and blending ratios shown in Tables 1 to 3 to prepare a composition, and the gastric disorder inhibitory effect and tablet stability were evaluated according to the following methods.

<Evaluation of gastric disorder suppression effect>
The components having the composition ratios of the examples and comparative examples were administered to the rat as a suspension, and after 4 hours, the stomach was removed to evaluate gastric damage. The details of the experimental method are as follows.
(1) Animals SD male rats were preliminarily raised at 5 weeks of age for 1 week, and fasted overnight (20 to 24 hours, water ad libitum), and then subjected to the test. Ten animals were used for each example and comparative example.
(2) Sample (suspension)
The sample was prepared so that the dose of the sample to rats was 10 mL / kg and the dose of ibuprofen was 130 mg / kg.
The preparation of the sample is the following method in Example 1, and in the other examples, the mass ratio of ibuprofen 650 mg acetaminophen and antacid is as shown in Tables 1 to 3, and the gum arabic is 5 w / mL%. As appropriate, it was prepared.
i) 650 mg of ibuprofen, 650 mg of acetaminophen, 200 mg of magnesium aluminate metasilicate and 2.5 g of gum arabic were weighed and mixed in a mortar.
ii) Purified water was added to the mixed powder and suspended therein to make 50 mL.

(3) Sample administration The sample was administered at a dose of 10 mL / kg.
Specifically, a suspension of an amount (rat weight 200 g: 2 mL) that was measured in advance (rat weight 200 g: 2 mL) was placed in a disposable syringe equipped with an oral administration sonde for rats, and was forcibly administered orally. Fasting continued after oral administration.
(4) Evaluation of gastric damage 1) Four hours after oral administration, the stomach was removed under ether anesthesia. Immediately after gastrectomy, 10 mL of physiological saline was injected into the stomach with a sonde, and placed in a 1% by mass formalin solution for 1 hour or longer and fixed. 2) After fixing with formalin, open the large bay of the stomach, flush the contents with physiological saline, spread the stomach on filter paper and paste it, and add the total length of ulcers (mm) (n = 10) It was measured. The result evaluated according to the following score is written together in Tables 1-4.
Grade ◎: Less than 10 mm ○: Less than 20 mm Δ: Less than 40 mm x: 40 mm or more

<Stability>
According to the blending ratios shown in Tables 1 to 3, fluidized bed granulation of 500 g of ibuprofen and acetaminophen powder and 100 g of low-substituted hydroxypropylcellulose (L-HPC / LH31, manufactured by Shin-Etsu Chemical Co., Ltd.) Machine (MP-01, manufactured by POWREC Co., Ltd.), and granulated by spraying 600 g of a 6% by mass aqueous solution of hydroxypropylcellulose (HPC-L, manufactured by Nippon Soda Co., Ltd.).
The granulated powder is sieved with a 750 μm sieve, 500 g of the antacid is mixed with an antacid corresponding to the blending ratio, 100 g of low-substituted hydroxypropylcellulose, and 0.5% by mass of magnesium stearate (extra) And a tablet containing 65 mg of ibuprofen was prepared using a rotary tableting machine (Clean Press 12HUK, manufactured by Kikusui Seisakusho Co., Ltd.). The composition of the tablet of Example 1 (1 tablet) is shown below. Other examples were appropriately prepared so that the mass ratio of ibuprofen 65 mg, acetaminophen and antacid was in Tables 1 to 3.

Tablet (1 tablet) composition (Example 1) (Adult dose 2 tablets)
(Mg)
Ibuprofen 65
Acetaminophen 65
Magnesium aluminate metasilicate 19.5
Low-substituted hydroxypropylcellulose 59 (26 + 33)
Hydroxypropylcellulose 9.36
Total 217.86
Magnesium stearate 0.5% by mass (extra)

The tablet prepared above was stored in a petri dish at 50 ° C. and 75% RH, and the appearance change after 2 days was observed. The result evaluated according to the following score is written together in Tables 1-4.
Rating ◎: No discoloration ○: Almost no discoloration △: Some discoloration ×: Very discoloration

<Effectiveness (Landal Celit method)>
The effectiveness (Landhal celite method) was evaluated for Example 2, the following Test Example 1, Comparative Examples 8 and 13, and ibuprofen alone.
The components of the composition ratio of each example are administered as a suspension to a rat inflamed in the right hind leg, and the pain threshold after 2 hours is measured. The details of the experimental method are as follows.
(1) Animals SD male male rats were preliminarily raised at 5 weeks of age for 1 week, and fasted overnight (17 to 20 hours, water was freely consumed), and then subjected to the test. Ten animals were used for each example.
Moreover, the animal measured the pain threshold value 3 times in 2 days as training before a test. Furthermore, the pain threshold value was measured before the onset of inflammation (pain threshold value i), and animals having a pain threshold value of about 60 to 120 were selected and subjected to the test.
(2) Sample The sample was prepared so that the dose of the sample to the rat was 10 mL / kg and the dose of ibuprofen was 13 mg / kg.
The preparation of the sample is the following method in Example 2, and other examples are 65 mg of ibuprofen, an amount in which the mass ratio of acetaminophen and antacid is Tables 1 to 4, and 5% by weight of gum arabic. It prepared suitably so that it might become.
i) 65 mg of ibuprofen, 65 mg of acetaminophen, 47.5 mg of magnesium aluminate metasilicate and 2.5 g of gum arabic were weighed and mixed in a mortar.
ii) Purified water was added to and suspended in the mixed powder to obtain 50 mL of suspension.
(3) Inflammation 4 g of brewer's yeast was made 20 g with physiological saline and dispersed. 0.1 mL of this solution was subcutaneously administered to the rat right hind paw.
Two hours after the onset of inflammation, the pain threshold of the right hind leg of the inflamed rat was measured with a pain threshold measurement device.

(4) Sample administration The suspension was administered at a dose of 10 mL / kg. A sample containing no drug (including only gum arabic) was prepared and used as a control.
After measuring the pain threshold value 2 hours after the onset of inflammation, a suspension of an amount (for example, rat body weight 200 g: 2 mL) according to the previously measured weight of the rat was attached to the rat oral administration sonde. It was taken into a disposable syringe and administered by gavage. Fasting continued after oral administration.
(5) Pain threshold evaluation One hour after oral administration of the sample, the pain threshold value of the right hind leg of a rat inflamed with a pain threshold value measuring apparatus was measured (pain threshold value ii). From the obtained results, the inhibition rate was calculated by the following formula.
Suppression rate (%) =
[(Average pain threshold ii) − (Average pain threshold ii of control group)] / [(Average pain threshold i of control group) − (Average pain threshold ii of control group)] × 100
Inhibition rate of Example 2: 82.7%
Inhibition rate of Test Example 1: 80.9%
Inhibition rate of Comparative Example 8: 59.3%
Inhibition rate of Comparative Example 13: 44.0%
Inhibition rate of ibuprofen alone: 37.8%
From the above results, it was shown that Example 2 has high effectiveness.

Claims (3)

  It contains (A) ibuprofen, (B) acetaminophen, and (C) magnesium aluminate metasilicate, and the blending mass ratio of the component (B) to the component (A) represented by (B) / (A) is 0. An antipyretic analgesic composition having a blending mass ratio of the component (C) to the component (A) represented by (C) / (A) of 0.3 to 1.5.   2. The antipyretic analgesic composition according to claim 1, wherein the composition is a solid preparation in which the components (A), (B) and (C) are mixed.   The antipyretic analgesic composition according to claim 1 or 2, wherein the blending mass ratio of the component (B) to the component (A) represented by (B) / (A) is 0.75 to 1.0. .