JP2007015973A - Film preparation for bathing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bathing preparation not only to dispense with the removal of applied medicine from the skin in bathing, but to be effective for preventing the skin damage caused by the stimulation of the skin at the applied part by bathing in a state applied with an external agent and giving improved therapeutic effect and free from the staining trouble of a bathtub. <P>SOLUTION: The film preparation for bathing is produced by dissolving nitrocellulose in 3-methylbutyl acetate, isobutyl acetate, acetone or their mixture, dissolving an agent for external use in the obtained nitrocellulose solution and adding ethyl alcohol to the product. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a film preparation for bath containing an external medicine used at the time of bathing.

Traditionally, the causes of diseases in the orthopedic field, especially “shoulder shoulders” and “back pain” that have been plagued by many people, can be broadly divided into “muscle fatigue” and “aging of bones, joints, and intervertebral discs”. There are “acute” and “chronic” types of muscle fatigue.
Of these, “chronic muscle fatigue” occurs from the neck to the shoulder as “stiff shoulders”, and when it occurs in the lower back as “back pain”. The muscles repeatedly contract and relax each time you move your body, but if you keep the same posture for a long time, the muscles will continue to be tense and blood flow will deteriorate. As a result, fatigue substances such as lactic acid accumulate, stimulating nerves and causing stiff shoulders and lower back pain. This is a series of “muscular tension ⇒ worsening blood circulation ⇒ production of fatigue substances ⇒ stiffness and pain”, causing chronic stiff shoulders and back pain.

For treatment of stiff shoulders and low back pain, non-steroidal anti-inflammatory drugs and muscle tone relieving drugs are generally used. However, the oral dosage form has a feature that it acts on a wide area of the body, but exhibits a strong analgesic effect. However, there are drawbacks such as gastrointestinal disorders (heartburn, stomach pain) and other side effects. In addition, if you take antibacterial drugs, antiepileptic drugs, diabetes drugs, etc., the effect is too strong, and some synthetic antibacterial drugs can cause convulsions when used in combination with nonsteroidal anti-inflammatory / analgesic drugs. There's a problem.
With suppositories, the drug is absorbed directly from the mucous membrane, so it works more reliably than internal medicine, the degree of absorption of which is easily affected by food, etc., and may be good for those who cannot take it due to gastrointestinal disorders, etc. In addition, people who have inflammation in the vagina and rectum may become worse due to mucosal irritation of the drug.

On the other hand, external preparations are drugs that are administered directly to painful places such as the neck, shoulders, and lower back, and have a pharmaceutical feature that systemic side effects are unlikely to occur because they act locally. External preparations are broadly classified into patches and coatings.
The patches include a transdermal preparation that delivers the drug directly to the affected area via the skin, a cold compress that cools the affected area with mainly acute inflammation, and a warm compress that heats the affected area with chronic blood flow. There is. In addition, various skin redening agents and skin irritants are generally blended in the patch for the purpose of enhancing the transdermal absorbability of the drug and analgesia.
There is a possibility that skin damage (itching, rash) may occur due to the components of the patch, especially because the skin irritation is markedly increased by the addition of temperature and moisture during bathing to the skin. Having a skin disorder is dangerous in terms of frequency and strength.
Therefore, as a precaution for the use of these preparations, it is obliged to remove the drug several hours before bathing. Further, since the patch is in a state where most of the patch is peeled off due to the influence of moisture during bathing, it can be said that the patch cannot be applied during bathing.
Next, the application preparation contains a skin redening agent and a skin stimulant for the purpose of assisting the massage effect, but it cannot be applied before bathing for the same reason as the patch.
In addition, creams, ointments, gels and other coating agents are often washed away before being absorbed by warm water at the time of bathing, and the effects are likely to diminish. There is a very high possibility that inconvenience will occur to the next bather.
By the way, as shown in Patent Document 1, a method is also known in which a skin adhesive layer is provided and a bath preparation is applied to the skin.

Japanese Patent Laid-Open No. 11-47219

By the way, there are non-steroidal anti-inflammatory analgesics, muscle tone relieving drugs, etc. for the drugs used in orthopedic diseases, and the use of patients who have overcome the drawbacks of internal medicines and suppositories as dosage forms for these affected areas. There is an external preparation as an easy (convenient) dosage form.
These external preparations are broadly classified into patch preparations represented by cataplasms and plasters, application agents represented by ointments, gels and creams, and liquids represented by tinctures and sprays. However, since the administration site of all external preparations is the skin and the skin tissue itself is a protective tissue for preventing the entry of foreign substances from the outside, the absorption of the active ingredient from the skin as the administration route is extremely high. The reality is bad.
Therefore, for the purpose of enhancing the absorbability of drugs from the skin (percutaneous absorbability), skin-reducing drugs such as pepper extract, capsaicin, nonylic acid vanillylamide and skin stimulants such as peppermint oil, l-menthol, camphor, ginger extract, etc. It is generally practiced to improve the blood flow of the skin, relieve local pain by stimulating the peripheral nerves (sensory nerves), and comprehensively reduce the inflammation of the affected area.
However, these additives cause side effects such as skin irritation and blistering on the skin as a side effect, and it is difficult to continuously administer drugs for therapeutic purposes.
In addition, the effects of heat and moisture from bathing and showering can be added to the skin, which can cause more skin irritation and skin damage than usual, so these drugs can be removed several hours before bathing. Mandatory as a precaution.
The present invention has been made in view of the above disadvantages, and it is not necessary to remove the drug at the time of bathing. The purpose of the present invention is to provide a bath preparation that eliminates skin damage due to local skin irritation and produces a higher therapeutic effect and less contaminates the bathtub.

The present inventor repeatedly considered various dosage forms to reduce the side effects on the skin of the contained skin redening agent and skin stimulant without degrading the properties and effects of the external preparation. , Prototype, and examination. And instead of removing the skin redness and skin irritants prescribed for the purpose of promoting percutaneous absorption and anti-inflammatory analgesia of external preparations, the contact time (administration time) to the skin is extended, It was conceived that the problem of side effects can be solved by setting the content (concentration) lower than usual.
In addition, by forming a film between the skin and moisture (bath hot water, etc.) to prevent direct contact between the skin and moisture, skin irritation and skin irritation are enhanced (strengthened). I also came up with something that could be prevented. For this purpose, nitrocellulose is blended in the drug to form a film on the outer surface to prevent direct contact between the skin and moisture.
In addition, the anti-inflammatory analgesic effect, which is thought to be caused by reducing the concentration (dose) of the skin redening agent and skin stimulant, is reduced by the thermal effect of bathing and retention of the drug in the affected area by the formation of a film and transdermal. It can be overcome by absorption action, and the skin temperature rises by bathing, so that the effect of the skin-reducing agent and skin stimulant with reduced dosage concentration can be recovered more than before the reduction, and the percutaneous absorption of the drug is promoted. It was found that the formation of the drug prevents the drug from being removed from the affected part and maintains the sustained effect, thereby enabling the drug to have a higher anti-inflammatory analgesic effect and reduce side effects.
As a result of further researches based on the above facts, the present inventor was able to complete the present invention.

The film preparation for bathing according to the present invention solves the above-mentioned problems and is as follows.
That is, in the invention of claim 1, nitrocellulose is dissolved in a solubilizer of 3-methylbutyl acetate, isobutyl acetate or acetone, or a mixture thereof, and a drug for external use is dissolved in the solubilizer of nitrocellulose. Furthermore, it is a film preparation for bath characterized by adding ethyl alcohol to make a preparation.
With this configuration, the solvent is volatilized after being applied to the skin, and the affected part is sealed by forming a transparent or translucent film on the skin at the application site, and the ODT effect (sealing effect) is applied to the affected part of the contained drug. Improve percutaneous absorption (permeability) and establish higher efficacy and reduced side effects by allowing bathing or showering while the drug is administered to the affected area by blocking the affected area from warm water or water .
The invention of claim 2 contains at least one of the above-mentioned topical medicines among chili extract, capsicum tincture, capsaicin, nonylic acid vanillylamide, cantharis tincture, mustard extract, and nicotinic acid ester. The bath film preparation according to claim 1, which improves the stimulation and blood flow of the affected area.
The invention of claim 3 contains one or more of mint oil, l-menthol, camphor, cinnamon oil (cinnamic aldehyde), ginger extract, eucalyptus oil and wasabi extract having skin irritating action as the externally applied drug. The bath film preparation according to claim 1, which assists stimulation of an affected area and promotion of blood flow.
The invention according to claim 4 contains at least one of salicylic acid, methyl salicylate, indomethacin, diclofenac sodium, flurbiprofen, piroxicam, sodium chondroitin sulfate, and ethyl guaiazulene sulfonate having anti-inflammatory activity as the external medicine. The bath film preparation according to claim 1, which effectively exhibits an anti-inflammatory effect on the affected area.
In the invention of claim 5, the solubilizer contains at least one of natural oils such as perilla oil, sesame oil, sesame oil, olive oil, horse oil, hinoki oil and castor oil, and the strength of the film during film formation. -The film preparation for baths according to claim 1, which enhances flexibility and sealing effect.
In the invention of claim 6, germanium is contained in the solubilizing agent, and by improving the blood flow of the affected area by the thermal action during bath use, the energy effect of germanium as a semiconductor is increased, so that shoulder stiffness, low back pain The bath film preparation according to claim 1, which improves systematic pain such as.
(Work)

In the bath film preparation according to the present invention, nitrocellulose is dissolved in a solubilizer of 3-methylbutyl acetate, isobutyl acetate, acetone, or a mixture thereof, and further added to a base added with ethyl alcohol as an anti-inflammatory agent. In addition, it is a supplement to which skin highlighter and skin irritant are added. After application to the skin, the solvent is volatilized, and a transparent or translucent film is formed on the skin to seal the affected area. The anti-inflammatory effect of the drug is enhanced by the thermal effect of bathing, and further, the effect of reducing the side effects caused by the skin redening agent and skin stimulant is prevented by preventing direct contact between the skin of the affected area and the water accompanying bathing.
In addition, by covering the affected area with the film, the anti-inflammatory effect and its sustainability are maintained by preventing the applied drug from being washed away by bathing or showering.

According to the present invention, nitrocellulose is dissolved in a solubilizer of 3-methylbutyl acetate, isobutyl acetate, or acetone, or a mixture thereof, and an anti-inflammatory agent is added to the mixture to which ethyl alcohol is added, and the skin is reddened. A drug or skin irritant is formulated into a preparation. After being applied to the skin, the solvent is volatilized and a transparent or translucent film is formed on the skin to seal the affected area and allow the drug to pass. It enhances skin absorbability and prevents direct contact between the affected area and moisture, thereby enhancing the anti-inflammatory analgesic effect of the affected area and at the same time preventing side effects (rash, blisters, etc.) of the affected area.
In addition, by coating the drug applied to the affected area with a film, it can be expected to last longer by preventing the drug from flowing out by bathing or showering. In addition, the drug can flow into the bathtub just by applying the drug. There is little so that the water in the bathtub will not be polluted.

[Example]
A preferred embodiment of the bath film preparation of the present invention will be described. First, the blending ratio of this embodiment is as shown in the following [Table 1].

[Table 1] [Composition ratio]
Nitrocellulose ... 5.0%
Ethyl alcohol: 71.5%
3-methylbutyl acetate: 10.0%
Acetone 10.0%
Pepper tincture ... 1.0%
Methyl salicylate ... 1.0%
l-menthol ・ ・ ・ 1.0%
Sesame oil ... 0.5%

[Preparation method]
The film preparation for bath of this example is prepared by the following procedure so as to achieve the above composition ratio.
First, after dissolving nitrocellulose in 3-methylbutyl acetate, acetone is further added and stirred well. Next, after adding ethyl alcohol to this solution and stirring well, the mixture is mixed with chili pepper tincture, methyl salicylate, l-menthol, and sesame oil, then added in small portions, and allowed to stand at room temperature for 24 hours for production.

[Anti-inflammatory test with bathing]
The effects and effects of the above-described composition and the film preparations for baths of Examples produced by the adjustment method and the preparations prepared from the commercial preparations of Comparative Examples were compared and verified under the following conditions.
(1) Subject Example: Film formulation for bath of this example Comparative example: Commercially available anti-inflammatory cream formulation
(Combination with D company methyl salicylate and pepper extract)
(2) Subjects: 5 adult volunteers who developed stiff shoulders (50 shoulders) x 2 groups,
10 people (40 to 55 years old male)
(3) Test method: Dosage / administration method and administration period 30 minutes before bathing, the preparation of the example or the preparation of the comparative example,
A fixed amount (about 1 g) was uniformly applied to both shoulders of the subject.
This act was carried out every day for 6 days.

The following evaluation was performed under the above conditions.
(4) Symptom Evaluation Judgment The symptom was evaluated for both shoulder symptoms according to the following criteria.
3: Severely symptomatic 2: Symptom is moderate 1: Symptom is minor 0: No symptom (5) Degree of improvement of symptom The degree of improvement of symptom was determined according to the following criteria.
Significant improvement (++): 3 → 0, 2 → 0
Moderate improvement (++): 3 → 1, 1 → 0
Minor improvement (+): 3 → 2, 2 → 1
Unchangeable (±): Symptoms do not change
Deterioration (-): Deterioration of symptoms (6) Evaluation of feeling of use Evaluation after use was determined according to the following criteria.
1: Very favorable 2: Preferred 3: Normal 4: Bad 5: Very bad 6: Unusable (7) Bathtub (hot water) stains when bathing 1: Very present 2: There is 3: There is a little 4: Almost None 5: Not at all

(8) Test results The test results are shown in [Table 2].

In [Table 2] of the test results, the Examples are judged on the 7th day (6 days per day), and in the judgment of the degree of improvement of symptoms, 3 cases are markedly improved, 2 cases are moderately improved, and 5 cases Five cases were more than moderate improvement. In determination of the feeling of use, it was very preferable, but 3 examples were preferable, but 2 examples were preferable, and 5 examples out of 5 were more than preferable.
There were no tub and hot water stains in this example (conclusively determined by checking each time), but there were four cases, almost none but one case, and there was no bathtub contamination due to the preparation. it was thought.
On the other hand, in the comparative examples, there were 3 cases of mild improvement and 2 cases of unchanged symptom improvement. In the judgment of the feeling of use, there were 2 cases that were bad, 1 case that was very bad, and 2 cases that could not be used. All 5 cases answered “very” the bath and hot water stains when bathing.
From the above results, the Examples are superior to the Comparative Examples in all of the improvement of symptoms, the feeling of use, and the evaluation of the dirt of the bathtub when taking a bath. Proved to be

[Blood flow measurement test]
Next, the effects on the blood flow of the bath film preparations of Examples produced by the above-described compositions and preparation methods were verified under the following conditions.
(1) Example: Film formulation for bath Comparative example: Ordinary commercially available anti-inflammatory analgesic hot cream (combination of pepper extract from company D, methyl salicylate)
(2) Subject: Adult male volunteer (55 years old)
(3) Test method:
After confirming that the subject was in a certain resting state, the probe was placed on the left shoulder of the subject, and the maximum blood flow ((PK). Unit: cm / sec) and mean blood flow ((MN). Unit: cm In addition, the pulse (unit: pulse rate / minute) was measured. Thereafter, a certain amount of the example product was uniformly applied to the left shoulder, and after 30 minutes, the shoulder was immersed in a 40 ° C. bath for 10 minutes, and PK, MN and pulse of the left shoulder were measured again after 1 hour from the bath.
The same measurement was performed on the comparative example by the same subject 7 days later.
The following measuring instruments were used for measurement throughout all tests.
Measuring instrument: Ultrasonic blood flow meter ES-1000SP2
Probe: MODEL / T8MO5S8C

(4) Test results:
The test results are shown in [Table 3].

Before application of the example, the maximum blood flow was 6.0 cm / sec, the average blood flow was 1.8 cm / sec, and the pulse was 60 / min. The blood flow was 22.8 cm / sec, the average blood flow was 5.4 cm / sec, and the pulse was 62 / min.
By bathing by application of the example, an increase in blood flow of about 3.8 times at the maximum blood flow and about 3 times of the average blood flow was observed, but the pulse rate remained almost unchanged.
In contrast, the comparative example had a maximum blood flow of 5.9 cm / sec, an average blood flow of 1.8 cm / sec, and a pulse of 61 / min before application. The blood flow was 7.1 cm / sec, the average blood flow was 2.0 cm / sec, and the pulse was 61 / min. By the bathing according to the comparative example, a slight increase of about 1.2 times in the maximum blood flow and about 1.1 times in the average blood flow was observed, but there was almost no change in the pulse.
From the above results, it is considered that the example shows a much more efficient bathing effect on the blood flow compared to the comparative example.

  From the results of the above two experiments, in the examples of the bath film preparations according to the present invention, nitrocellulose was dissolved in a solubilizer of 3-methylbutyl acetate, isobutyl acetate, acetone, or a mixture thereof, and further ethyl alcohol. In addition to anti-inflammatory drugs in addition to anti-inflammatory drugs, skin redness agents and skin irritants are added. After application to the skin, the solvent evaporates, forming a transparent or translucent film on the skin. Since the affected area was sealed, the anti-inflammatory effect by the drug was enhanced by the sealing effect (ODT effect) and the thermal effect by bathing, compared with the comparative example which is a cream preparation containing only the conventional external medicine. By preventing direct contact between the skin and the moisture associated with bathing, it exerts the effect of reducing the side effects caused by skin redness and skin stimulants. In addition, by covering the affected area with the film, the anti-inflammatory effect and its sustainability are maintained by preventing the applied drug from being washed away by bathing or showering. Furthermore, as an accompanying effect, there is little bathtub contamination, and it becomes pleasant also for those who take a bath after that.

Of course, the present invention is not limited to the above-described examples as long as it does not impair the characteristics of the present invention. For example, in this example, as a component of a skin redening agent, a pepper having an equivalent medicinal effect is used. Although tincture was used, a chili extract, capsaicin, nonylic acid vanillylamide, cantharis tincture, mustard extract, nicotinic acid ester having equivalent medicinal effects, or a mixture of these selected ones may be used.
Further, in this example, l-menthol was used as a component having a skin irritating action, but mint oil, camphor, cinnamon oil, ginger extract, eucalyptus oil, wasabi extract having the same medicinal effect, or these were used. A mixture may be used.
Similarly, in this example, salicylic acid was used as a topical anti-inflammatory component, but methyl salicylate, indomethacin, diclofenac sodium, flurbiprofen, piroxicam, sodium chondroitin sulfate, guaiazulene having equivalent medicinal effects. A simple substance of ethyl sulfonate or a mixture of these selected may be used.
Similarly, in this example, sesame oil was blended in order to enhance the strength / flexibility and sealing effect of the film at the time of film formation, but natural oils such as perilla oil, sesame oil, olive oil, horse oil, hinoki oil and castor oil were used alone. Alternatively, these may be selected and mixed.
In addition, although not used in this example, germanium may be included in the dissolving agent of the example, and in this case, by improving the blood flow in the affected area by the thermal action during bathing, The energy effect of germanium as a semiconductor can be enhanced and systemic pains such as stiff shoulders and back pain can be improved.

  In any case, the anti-inflammatory effect of the drug is enhanced by the sealing effect (ODT effect) and the thermal effect of bathing, and further, direct contact between the affected skin and the water accompanying bathing is prevented. It is effective in reducing the side effects caused by skin irritants, and the film covers the affected area, preventing the loss of the applied drug by bathing or showering, and maintaining a reliable anti-inflammatory effect and its sustainability. Is.

Claims (6)

  Nitrocellulose is dissolved in 3-methylbutyl acetate, isobutyl acetate or acetone, or a solubilizer of a mixture thereof, and a drug for external use is dissolved in the solubilizer of nitrocellulose. Further, ethyl alcohol is added to the preparation. A film preparation for bath characterized by the above.   The topical drug contains one or more of the following: skin extract red pepper chili extract, capsicum tincture, capsaicin, nonyl acid vanillylamide, cantalis tincture, mustard extract, nicotinic acid ester, irritation of affected area and blood flow The bath film preparation according to claim 1, wherein   The topical medicine contains one or more of mint oil, l-menthol, camphor, cinnamon oil, ginger extract, eucalyptus oil, and horseradish extract having skin irritation action, and stimulates the affected area and promotes blood flow. The film preparation for bath according to claim 1, wherein   The topical drug contains at least one of salicylic acid, methyl salicylate, indomethacin, diclofenac sodium, flurbiprofen, piroxicam, sodium chondroitin sulfate, ethyl guaiazulene sulfonate having anti-inflammatory action, and has an anti-affected effect. 2. The bath film preparation according to claim 1, which effectively exhibits an inflammatory effect.   The solubilizer contains at least one of natural oils such as perilla oil, sesame oil, sesame oil, olive oil, horse oil, hinoki oil and castor oil, so that the strength, flexibility and sealing effect of the film during film formation can be achieved. The bath film preparation according to claim 1, wherein the film preparation is enhanced.   Germanium is contained in the solubilizing agent, and the heat effect at the time of bathing improves the blood flow of the affected area, thereby enhancing the energy effect of germanium as a semiconductor and improving systemic pain such as stiff shoulders and low back pain. The film preparation for bath according to claim 1