| Issue 1297-5 |
| US 6,936,275 B2 |
| Amino acid modulated extended release dosage form |
| A. Reza Fassihi, Ambler, Pa. (US); and Thomas Dürig, Chadds Ford, Pa. (US) |
| Assigned to Scolr, Inc., Redmond, Wash. (US) |
| Filed on Feb. 11, 2003, as Appl. No. 10/364,793. |
| Application 10/364793 is a continuation in part of application No. 09/997377, filed on Nov. 30, 2001, granted, now 6517868. |
| Application 09/997377 is a continuation in part of application No. 09/467169, filed on Dec. 20, 1999, abandoned. |
| Prior Publication US 2003/0219480 A1, Nov. 27, 2003 |
| This patent is subject to a terminal disclaimer. |
| Int. Cl.7A61K 9/26 |
| U.S. Cl. 424—470 [424/464; 424/465; 424/468; 424/469; 424/475; 424/482; 424/484; 424/485; 424/486; 424/488; 424/489; 424/490; 424/499; 424/500; 424/501; 514/769; 514/972; 514/772.3; 514/773; 514/777; 514/778; 514/780; 514/781; 514/782; 514/784; 514/788; 514/960; 514/961; 514/964; 514/965] | 26 Claims |
| 1. An oral extended release dosage form comprising:
(A) a plurality of granules comprising a pharmaceutically active compound, one or more amino acids selected from the group
consisting of glycine, alanine, valine, leucine, iso-leucine, phenylalanine, proline, aspartic acid, glutamic acid, lysine,
arginine, histidine, serine, threonine, cysteine, asparagine and glutamine, and an intragranular polymer; and,
(B) a hydrophilic extragranular polymer in which said granules are dispersed, said extragranular polymer being more rapidly
hydrating than said intragranular polymer, wherein:
the amino acid is selected for hydropathy characteristics depending on solubility characteristics of the active compound,
and
when said active compound is sparingly or more than sparingly soluble in water, said amino acid has a relatively equal balance
between hydrophobic and hydrophilic components or is relatively more hydrophilic; and
when said active compound is less than sparingly soluble in water, said amino acid is a combination of at least two amino
acids, one of which is moderately or strongly hydrophobic, the other of which is relatively more hydrophilic.
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