NZ192924A - Anti-hypertensive compositions containing endralazine, pendolol and a salidiuretic - Google Patents

Anti-hypertensive compositions containing endralazine, pendolol and a salidiuretic

Info

Publication number
NZ192924A
NZ192924A NZ192924A NZ19292480A NZ192924A NZ 192924 A NZ192924 A NZ 192924A NZ 192924 A NZ192924 A NZ 192924A NZ 19292480 A NZ19292480 A NZ 19292480A NZ 192924 A NZ192924 A NZ 192924A
Authority
NZ
New Zealand
Prior art keywords
composition according
active agent
weight ratio
active agents
endralazine
Prior art date
Application number
NZ192924A
Inventor
D G Holmes
W H Aellig
P Jerie
W Schuetz
Original Assignee
Sandoz Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sandoz Ltd filed Critical Sandoz Ltd
Priority to NZ19978380A priority Critical patent/NZ199783A/en
Publication of NZ192924A publication Critical patent/NZ192924A/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/20Pills, tablets, discs, rods
    • A61K9/2072Pills, tablets, discs, rods characterised by shape, structure or size; Tablets with holes, special break lines or identification marks; Partially coated tablets; Disintegrating flat shaped forms
    • A61K9/2077Tablets comprising drug-containing microparticles in a substantial amount of supporting matrix; Multiparticulate tablets
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/54Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one sulfur as the ring hetero atoms, e.g. sulthiame
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00Drugs for disorders of the cardiovascular system
    • A61P9/12Antihypertensives

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Chemical & Material Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Organic Chemistry (AREA)
  • Cardiology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Medicinal Preparation (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)

Description

New Zealand Paient Spedficaiion for Paient Number 1 92924 192924 Prior . ........
Gomr-'^o fc>jsciiicaticn Filed: ;P;f? ffvyNtygftu-• .••trsiseetscn . , vt J -i. - - •' •/ ISlb3 p rij f?5>, o. I ly&» _&$ tf a »4sl.pJ NEW ZEALAND PATENTS ACT, 1953 No.: Date: COMPLETE SPECIFICATION ANTIHYPERTENSIVE PHARMACEUTICAL COMPOSITIONS we, SANDOZ LTD., 35 Lichtstrasse, CH-4002 Basle, Switzerland; a Swiss Body Corporate hereby declare the invention for which K/ we pray that a patent may be granted to J&Si/us, anc* the method by which it is to be performed, to be particularly described in and by the following statement: - (followed by page la) - la - 1 929 24 100 5141 ANTIIIYrCRTENOIVC PHARMACEUTICAL COMPOSITIONS This invention relates to anti-hypertension and pharmaceutical compositions therefor.
Various types of hypertension exist and many diffe-5 rent active agents are known for treating hypertension, but these all have limitations. For example salidiuretics, beta-blocking agents such as pindolol and peripheral vasodilating agents have been successfully used. A recent clinically tested anti-hypertensive agent with peripheral 10 vasodilating activity is 6-benzoyl-3-hydrazinc-5,5,7,S-te1-trahydropyrido[4,3-c]pyridazine also known as BQ 22-708 and which has the generic name, and is hereinafter referred to as, endralazine.
It has now been surprisingly found from clinical 15 trials that the co-administration of the following active agents:- a) endralazine b) a salidiuretic and c) pindolol and pharmaceutical compositions containing these active agents lead to especially advantageous anti-hypertensive effects suitable, e.g. for the treatment of moderate to severe hypertension, even when treatment with beta-blocking agents and/or salidiuretics has been unsatisfactory. These 25 effects include a quick onset and high level of activity. 192924 Moreover, these effects are much more beneficial than could be expected in view of the activities of each of the active agents a), b) and c). The compositions are well tolerated and provoke surprisingly little oedema and tachy-5 cardia and other undesirable side effects of peripheral vasodilation.
Accordingly in one aspect the present invention provides a pharmaceutical composition comprising as active agents:-10 a) endralazine b) a salidiuretic and c) pindolol, wherein the weight ratio of active agents a), b) and c) is from 1:30:2 to 1:0.01:0.5 respectively.
These compositions may be made in conventional manner using conventional galenical techniques, if desired 15 using suitable pharmaceutical excipients. For example active agents a), b) and c) may be mixed together. As endralazine has in general a shorter duration of activity than pindolol, it is preferred to provide the endralazine component in sustained release form, e.g. in a wax matrix. Endralazine 20 is susceptible to moisture so it is preferred to use dry galenical techniques and pharmaceutical excipients chosen from the following: lactose, PVP, colloidal silica, talc and preferably calcium sulphate, corn starch and magnesium stearate. These and other conventional pharmaceutical ex-. 25 cipients may be mixed v/ith active agents b) and c), e.g. diluents, fillers, granulating agents, disintegrating ■ agents, binding agents, lubricating agents, dyes, and stabilizing agents.
In another aspect the present invention accordingly 30 provides a process for the production of a pharmaceutical composition as defined above which comprises formulating active agents a), b) and c) together, if desired active agent a) being so formulated to be released in gastro-in-testinal juices more slowly than active agent c). 35 The final compositions are preferably in solid form and may be granules, pellets, capsules, dragees or tablets. It is preferred to have a unit dosage form, preferably a 1 Q O Q 0 I J L. y L mantle tablet, with a sustained release core containing the endralazine component, and an outer layer containing the active agents b) and c), which releases these two active agents before active agent a) in the gastro-intestinal juices.
In a further aspect the present invention provides a pack containing active agents a), b) and c) as stated above, at least one of which is presented separately, for concomitant administration in the treatment of hypertension. Conveniently the pack is provided with instructions for the concomitant administration of predetermined amounts of active agents a), b) and c).
In general any salidiuretic may be used as active agent b). A suitable salidiuretic is e.g. one of the following :- 2-aminomethyl-4-tert-butyl-6-iodophenol (MK 447); bendroflu-methiazide; benzthiazide; bumetanide; chlorothiazide: chlorthalidone; clopamide; cyclothiazide; ethacrynic acid; furo-semide; hydrobenzthiazide ; hydrochlorothiazide; hydroflumethiazide; methyclothiazide; metolazone; polythiazide; quine-thazone; ticrynafen; trichlormethiazide.
Particularly suitable salidiuretics are hydrochlorothiazide and metolazone. With salidiuretics causing relatively little potassium loss and particularly with clopamide, especially advantageous effects have been observed.
The active agents may be in free form or in pharma-ceutically acceptable salt form, e.g. in pharmaceutical^ acceptable acid addition salt form. Acids suitable for salt formation include hydrochloric acid, fumaric acid, methane-sulfonic acid, hydrobromic acid, sulfuric acid and maleic acid.
PATENT OFFICE -7FEBI984 RECEIVED 192924 - 4 - 100-5141—- Endralazine is conveniently provided in methane sulphonate salt form, pindolol is conveniently provided in free base form, and the salidiuretic is also conveniently in free base form.
The activity of any pharmaceutically acceptable salt form of active agent a), b) or c) is generally of the same order as that of the respective free base form. However as used herein, except when otherwise stated, all amounts of active agents a), b) and c) refer to the amount 10 of free base form. Similar considerations apply to weight ratios.
The active agents a), b) and c) when administered concomitantly or in combination are useful in the treatment of hypertension in standard clinical trials with hyperten-15 sive subjects. For example, in one clinical trial 56 hypertensive subjects suffering from moderate to severe hypertension were treated with a daily dose of 2.5-20 mg of endralazine, 5 mg clopamide and 10 mg of pindolol. The active agents were administered once or twice a day over several weeks and 20 generally all the active agents were administered at the same time of day. The blood pressure was recorded twice daily and was found to fall to normal levels. A low number and frequency of side effects was recorded also.
As indicated in these clinical trials fixed combi-25 nations are well received by a large number of hypertensive subjects.
For the treatment of hypertension the exact daily dosages of active agents a), b) and c) will, of course, vary depending on the salidiuretic employed, the mode of 30 administration, and the condition to be treated. 192924 However, in general, the total daily dosage is in the range of from about 5 mg to about 40 mg of active agent a) and preferably from about 5 to 20 mg. The daily dosage of active agent b) is generally in the range from 5 about 20 to 100% of the daily dose indicated for its use as a diuretic for the treatment of oedema. In the.case of clopamide, the preferred daily dose is generally in the range from about 5 to about 10 mg. The daily dosage of active agent c) is generally from about 10 to about 20 mg.
Conveniently these active agents a), b) and c) are administered in divided doses 2, 3 or 4 times a day, containing, e.g. 5 or 10 mg of active agent a) r or preferably in a single dose once a day containing, e.g. 10 or 20 mg 15 of active agent a).
The indicated weight ratio of active agents a), b) and c) is from 1:30:2 to 1:0.01:0.5 respectively. Naturally the weight ratio will depend on the salidiuretic used. For hydrochlorothiazide a suitable weight ratio of 20 active agents a), b) and c) is from 1:20:2 to 1:2.5:0.5. For clopamide and metolazone a suitable weight ratio of active agents a), b) and c) is from 1:2:2 to 1:0.25:0.5. For clopamide preferred weight ratios are. 1:1:2 to 1:O.5:1, and especially 1:0.5:1; 1:1:1 arid 1:1:2. 25 Indicated weight ratios when active agent b) is other than clopamide, metolazone and hydrochlorothiazide may be formulated by taking into account the activity of the particular salidiuretic compared to the known salidiuretic activities of the clopamide, metolazone and hydro-30 chlorothiazide.
As will be appreciated pindolol is the generic term for 4-(2-hydroxy-3-isopropylaminopropoxy)indole , and clopamide is the generic term for N-[cis-21,6'—dimethylpiperidyl- « (11)]-3-sulfamoyl-4-chlorobenzoic acid amide. 35 The following examples illustrate the compositions of the£»iJivention. 19 2924 - 6 - 100 5141 Example 1: Tablet The following composition may be formulated using standard tabletting techniques and is useful for oral administration once or twice a day for the ^treatment of moderate or severe hypertension.
Ingredient Tablet (mg) Endralazine (in methane sulfonate - form) 13.5 (=10 mg base) Clopamide (in free base form) Pindolol (in free base form) Lactose 58.5 Corn starch 40 Silica (colloidal) 0.5 Polyvinylpyrrolidone Talc Magnesium stearate 1 total 153.5 7 - 192924 The three active agents are mixed with the lactose, the colloidal silica and a portion of the corn starch. The mixture is sieved and kneaded with an alcoholic solution of polyvinylpyrrolidone.
The mixture is again sieved, dried and the dry gra nulate broken down. The remaining corn starch, talc and magnesium stearate are then added and the mixture pressed into a tablet.
Example 2: Retard tablet The following composition may be formulated using standard tabletting techniques and is useful for oral administration once a day for the treatment of moderate or severe hypertension.
Ingredient Tablet (mg) Core Endralazine (in methane sulfonate form) 13.6 Hydrogenated castor oil 65.9 Paraffin 8.0 Corn starch 11.5 Magnesium stearate 1.0 total 100.0 Pressed coat Clopamide (in free base form) .0 Pindolol (in free base form) .0 15FEB1982 'V r j

Claims (16)

1 929 24 - 8 - 100-5141— Ingredient Tablet (mg) Cellulose (microcrystalline) ~ 172.5 Modified corn starch (Sta-R 1500 , Staley Co., Decatur, 111.* USA) 21.0 Silica (colloidal) 0.4 Magnesium stearate 1.1 total 210.0 total 310.0 Example 3: 10 Clopamide may be replaced by the same weight of metolazone (in free base form) in the formulations of Examples 1 and 2. : Example 4: Clopamide may be replaced by hydrochlorothiazide 15 .(in free base form) in the formulations - of Examples 1 '-'(J-OO mg in lieu of 10 mg) and 2 (50 rag in lieu of 5 mg) . 9 *■* 192924 100 5111 YWhT WE CLAIM IS: 10 15 20 25
1. An antihypertensive pharmaceutical composition comprising as active agents a) endralazine b) a salidiuretic and c) pindolol, wherein the weight ratio of active agents a), b) and c) is from 1:30:2 to 1:0.01:0.5 respectively.
2. A solid composition according to claim 1.
3. A composition according to claim 1 or 2 wherein active agent b) is hydrochlorothiazide or metolazone.
4. A composition according to claim 1 or 2 wherein the active agent b) is clopamide.
5. A composition according to claim 4 wherein the weight ratio of active agent a), b) and c) is from 1:2:2 to 1:0.25:0.5.
6. A composition according to claim 5 wherein said weight ratio is 1:1:2.
7. A composition according to claim 5 wherein said weight ratio is 1:0.5:1.
8. A composition according to claim 5 wherein said weight ratio is 1:1:1.
9. A composition according to any one of the preceding claims wherein the endralazine component is in sustained release form.
10. A composition according to any one of the preceding claims in unit dosage form.
11. A composition according to claim 10 having 5 mg of active agent a).
12. A composition according to claim 10 having 10 mg of active agent a) .
13. A composition according to claim 10 having 20 mg of active agent a).
14. A pharmaceutical composition according to claim 1 - 10 - 1 92924 substantially as hereinbefore described with reference to any one of the examples.
15. A pack containing active agents a), b) and c) and in the weight ratio as stated in claim 1, at least 5 one of which is presented separately, for the con comitant administration in the treatment of hypertension.
16. A pack according to claim 15 provided with instructions for the concomitant administration of 10 predetermined amounts of active agents a) , b) and c) . DATED THIS ^ DAY OF *9 A. J. PARK & SON PER $ -S . AGENTS FOR THE APPLICANTS .'fcMT OFFICE -7 FEB 1984
NZ192924A 1979-02-22 1980-02-20 Anti-hypertensive compositions containing endralazine, pendolol and a salidiuretic NZ192924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NZ19978380A NZ199783A (en) 1979-02-22 1980-02-20 Sustained release compositions containing endralazine embedded in a wax matrix

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH178579A CH643457A5 (en) 1979-02-22 1979-02-22 PHARMACEUTICAL PREPARATIONS FOR TREATING HYPERTENSION.

Publications (1)

Publication Number Publication Date
NZ192924A true NZ192924A (en) 1984-05-31

Family

ID=4218544

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ192924A NZ192924A (en) 1979-02-22 1980-02-20 Anti-hypertensive compositions containing endralazine, pendolol and a salidiuretic

Country Status (20)

Country Link
JP (1) JPS55115823A (en)
AT (1) AT378915B (en)
AU (1) AU538599B2 (en)
BE (1) BE881763A (en)
CA (1) CA1147657A (en)
CH (1) CH643457A5 (en)
DE (1) DE3005029A1 (en)
FR (1) FR2449450A1 (en)
GB (1) GB2044101B (en)
HU (1) HU187271B (en)
IE (1) IE49073B1 (en)
IL (1) IL59432A (en)
IT (1) IT1145433B (en)
MY (1) MY8500619A (en)
NL (1) NL8001000A (en)
NZ (1) NZ192924A (en)
PH (1) PH17118A (en)
PT (1) PT70855A (en)
SE (2) SE8001121L (en)
ZA (1) ZA801018B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2537434A1 (en) * 1982-12-09 1984-06-15 Sandoz Sa Endralazine pharmaceutical composition in depot form
GB2367242B (en) * 2000-09-21 2004-07-28 Henderson Morley Res & Dev Ltd Antiviral treatment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2458155A1 (en) * 1973-12-19 1975-07-03 Sandoz Ag NEW PHARMACEUTICAL PREPARATIONS

Also Published As

Publication number Publication date
FR2449450A1 (en) 1980-09-19
NL8001000A (en) 1980-08-26
SE8001121L (en) 1980-08-23
AU5574280A (en) 1980-08-28
ATA95580A (en) 1985-03-15
PH17118A (en) 1984-06-01
GB2044101A (en) 1980-10-15
IL59432A0 (en) 1980-05-30
IT1145433B (en) 1986-11-05
AT378915B (en) 1985-10-25
IL59432A (en) 1984-08-31
GB2044101B (en) 1983-09-07
ZA801018B (en) 1981-09-30
JPS55115823A (en) 1980-09-06
SE8202357L (en) 1982-04-15
DE3005029A1 (en) 1980-09-04
DE3005029C2 (en) 1987-02-12
IE800336L (en) 1980-08-22
BE881763A (en) 1980-08-18
AU538599B2 (en) 1984-08-23
CA1147657A (en) 1983-06-07
MY8500619A (en) 1985-12-31
IE49073B1 (en) 1985-07-24
PT70855A (en) 1980-03-01
IT8047950A0 (en) 1980-02-20
HU187271B (en) 1985-12-28
CH643457A5 (en) 1984-06-15
FR2449450B1 (en) 1983-07-22

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