Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Tablets – lozenges – or pills
Reexamination Certificate
2001-02-23
2003-09-23
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Tablets, lozenges, or pills
C424S464000, C424S465000, C424S472000, C424S474000
Reexamination Certificate
active
06623757
ABSTRACT:
This invention relates to antibiotic compositions and the use thereof. More particularly, this invention relates to a composition for the delivery of two or more antibiotics, and the use thereof.
In many cases, it is desirable to employ two different antibiotics in the treatment of a bacterial infection, in that such antibiotics may have complementary mechanisms of action that facilitate treatment of the bacterial infection.
The present invention is directed to a new and improved composition that delivers two or more antibiotics, and the use thereof.
In accordance with an aspect of the present invention, there is provided an antibiotic product for delivering at least two different antibiotics that is comprised of at least three dosage forms each comprised of at least one antibiotic and a pharmaceutically acceptable carrier, with one of the dosage forms including at least one of the at least two antibiotics and at least one dosage form including at least a second antibiotic of the at least two antibiotics.
Thus, for example, each of the dosage forms may include two or more antibiotics, or one or two of the dosage forms may include only one of the two or more antibiotics and each of the remaining dosage forms may include only one or more of the different antibiotics or two or more of the antibiotics. Thus, in accordance with this aspect of the invention, there is an antibiotic product for delivering at least two different antibiotics wherein the product includes at least three dosage forms wherein each of the at least two antibiotics is present in at least one of the three dosage forms.
In a preferred embodiment each of the dosage forms has a different release profile, with one of the dosage forms being an immediate release dosage form.
In another aspect, the present invention is directed to treating a bacterial infection by administering to a host in need thereof an antibiotic product as hereinabove and hereinafter described.
Thus, in accordance with an aspect of the present invention, there is provided a single or unitary antibiotic product that has contained therein at least three antibiotic dosage forms, each of which has a different release profile, whereby the antibiotic contained in each of the at least three dosage forms is released at different times, and wherein at least one of the dosage forms includes at least a first antibiotic and at least one of the dosage forms includes at least a second antibiotic different from the first antibiotic.
In accordance with a further aspect of the invention, the antibiotic product may be comprised of at least four different dosage forms, each of which starts to release the antibiotic contained therein at different times after administration of the antibiotic product.
The antibiotic product generally does not include more than five dosage forms with different release times.
In accordance with a preferred embodiment, the antibiotic product has an overall release profile such that when administered the maximum serum concentration of the total antibiotic released from the product is reached in less than twelve hours, preferably in less than eleven hours. In an embodiment, the maximum serum concentration of the total antibiotic released from the antibiotic product is achieved no earlier than four hours after administration.
In accordance with one preferred embodiment of the invention, one of the at least three dosage forms is an immediate release dosage form whereby initiation of release of antibiotic therefrom is not substantially delayed after administration of the antibiotic product. The second and third of the at least three dosage forms is a delayed dosage form (which may be a pH sensitive or a non-pH sensitive delayed dosage form, depending on the type of antibiotic product), whereby antibiotic released therefrom is delayed until after initiation of release of antibiotic from the immediate release dosage form. More particularly, antibiotic release from the second of the at least two dosage forms achieves a C
max
(maximum serum concentration in the serum) at a time after antibiotic released from the first of the at least three dosage forms achieves a C
max
in the serum, and antibiotic released from the third dosage form achieves a C
max
in the serum after the C
max
of antibiotic released from the second dosage form.
In one embodiment, the second of the at least two dosage forms initiates release of antibiotic contained therein at least one hour after the first dosage form, with the initiation of the release therefrom generally occurring no more than six hours after initiation of release of antibiotic from the first dosage form of the at least three dosage forms.
In general, the immediate release dosage form produces a C
max
for antibiotic released therefrom within from about 0.5 to about 2 hours, with the second dosage form of the at least three dosage forms producing a C
max
for antibiotic released therefrom in no more than about four hours. In general, the C
max
for such second dosage form is achieved no earlier than two hours after administration of the antibiotic product; however, it is possible within the scope of the invention to achieve C
max
in a shorter period of time.
As hereinabove indicated, the antibiotic product may contain at least three or at least four or more different dosage forms. For example, the antibiotic released from the third dosage form reaches a C
max
at a time later than the C
max
is achieved for antibiotic released from each of the first and second dosage forms. In a preferred embodiment, release of antibiotic from the third dosage form is started after initiation of release of antibiotic from both the first dosage form and the second dosage form. In one embodiment, C
max
for antibiotic release from the third dosage form is achieved within eight hours.
In another embodiment, the antibiotic product contains at least four dosage forms, with each of the at least four dosage forms having different release profiles, whereby antibiotic released from each of the at least four different dosage forms achieves a C
max
at a different time.
As hereinabove indicated, in a preferred embodiment, irrespective of whether the antibiotic contains at least three or at least four different dosage forms each with a different release profile, C
max
for all the antibiotic released from the antibiotic product is achieved in less than twelve hours, and more generally is achieved in less than eleven hours.
In a preferred embodiment, the antibiotic product is a once a day product, whereby after administration of the antibiotic product, no further product is administered during the day; i.e., the preferred regimen is that the product is administered only once over a twenty-four hour period. Thus, in accordance with the present invention, there is a single administration of an antibiotic product with the antibiotic being released in a manner such that overall antibiotic release is effected with different release profiles in a manner such that the overall C
max
for the antibiotic product is reached in less than twelve hours. The term single administration means that the total antibiotic administered over a twenty-four hour period is administered at the same time, which can be a single tablet or capsule or two or more thereof, provided that they are administered at essentially the same time.
Thus in accordance with an aspect of the invention, there is provided a single dosage antibiotic product comprised of at least three antibiotic dosage forms each having a different release profile with each of the dosage forms including at least one of a first or second antibiotic and at least one of the three dosage forms including at least the first antibiotic and at least one of the dosage forms including at least the second antibiotic. Each of the dosage forms of antibiotic in a pharmaceutically acceptable carrier may have one or more antibiotics.
It is to be understood that when it is disclosed herein that a dosage form initiates release after another dosage form, such terminology means that the dosage form is designed and is in
Isbister James D.
Rudnic Edward M.
Treacy, Jr. Donald J.
Wassink Sandra E.
Advancis Pharmaceutical Corp.
Olstein Elliot M.
Page Thurman K.
Stauffer Raymond E.
Tran S.
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