Pharmaceutical Composition

1 . A pharmaceutical composition comprising an active pharmaceutical composition and a water-soluble eutectic composition, the resultant mixture being formed into a solid, water-soluble dosage form.

2 . A pharmaceutical composition as claimed in claim 1 in which the melting point of the eutectic composition is lower than the melting point of the pharmaceutical composition.

3 . A pharmaceutical composition as claimed in claim 1 or claim 2 in which the eutectic composition is a urea and 1,3-dimethyl urea mixture.

4 . A pharmaceutical composition as claimed in claim 3 in which the urea:dimethyl urea ratio is 40% m/m:60% m/m.

5 . A pharmaceutical composition as claimed in claim 3 or claim 4 in which the urea and 1,3-dimethyl urea mixture is present in the range 25 to 50 % m/m.

6 . A pharmaceutical composition as claimed in any one of the preceding claims in which the active pharmaceutical composition is a pesticide.

7 . A pharmaceutical composition as claimed in claim 6 in which the pesticide is a herbicide.

8 . A pharmaceutical composition as claimed in claim 7 in which the pesticide is suitable for controlling or eradicating mammalian pests.

9 . A pharmaceutical composition as claimed in claim 8 in which the pesticide is suitable for controlling or eradicating ectoparasites.

10 . A pharmaceutical composition as claimed in claim 8 in which the pesticide is an acaricide.

11 . A pharmaceutical composition as claimed in claim 10 in which the acaricide belongs to the amidine group of pesticides.

12 . A pharmaceutical composition as claimed in claim 11 in which the pesticide is AMITRAZ.

13 . A pharmaceutical composition as claimed in claim 12 in which the AMITRAZ is present in the range 30 to 40 % m/m.

14 . A pharmaceutical composition as claimed in any one of the preceding claims which further includes any one or more of at least one dispersant, at least one disintegrant, at least one surfactant and at least one filler.

15 . A pharmaceutical composition as claimed in claim 14 in which the dispersant is a sodium salt of the condensation product of naphalene sulphuric acid.

16 . A pharmaceutical composition as claimed in claim 15 in which the dispersant is WETTOL D2.

17 . A pharmaceutical composition as claimed in any one of claims 14 to 16 in which the dispersant is present in the range 1 to 2 % m/m.

18 . A pharmaceutical composition as claimed in any one of claims 14 to 17 in which the surfactant is a non-ionic surfactant belonging to the nonylphenol ethoxylate group.

19 . A pharmaceutical composition as claimed in claim 18 in which the surfactant is ARKOPAL N090.

20 . A pharmaceutical composition as claimed in any one of claims 14 to 19 in which the dispersant is present in the range 2 to 3 % m/m.

21 . A pharmaceutical composition as claimed in any one of claims 14 to 20 in which the disintegrant is sodium starch glycolate.

22 . A pharmaceutical composition as claimed in claim 21 in which the sodium starch glycolate is present in the range 5 to 15 % m/m.

23 . A pharmaceutical composition as claimed in any one of claims 14 to 22 which includes calcium carbonate present in the range 8 to 11 % m/m.

24 . A method of manufacturing a pharmaceutical composition in solid dosage form which includes melting a water-soluble eutectic composition, adding an active pharmaceutical composition and casting the resultant mixture into moulds.

25 . A method as claimed in claim 24 which further includes adding any one or more of at least one dispersant, at least one disintegrant, and at least one surfactant to the melted polymeric composition.

26 . A method as claimed in claim 24 or claim 25 in which the active pharmaceutical composition is a pesticide.

27 . A method as claimed in claim 26 in which the pesticide is a herbicide.

28 . A method as claimed in claim 26 in which the pesticide is suitable for controlling or eradicating mammalian pests.

29 . A method as claimed in claim 28 in which the pesticide is suitable for controlling or eradicating ectoparasites.

30 . A method as claimed in claim 28 in which the pesticide is an acaricide.

31 . A method as claimed in claim 30 in which the acaricide belongs to the amidine group of pesticides.

32 . A method as claimed in claim 31 in which the pesticide is AMITRAZ.