CPC A61K 9/08 (2013.01) [A61K 9/0053 (2013.01); A61K 31/135 (2013.01); A61K 47/10 (2013.01); A61K 47/12 (2013.01); A61K 47/26 (2013.01)] | 12 Claims |
1. An aqueous oral solution comprising:
(a) from about 4.5 mg/mL to 5.5 mg/mL of tramadol hydrochloride as the sole active ingredient;
(b) propylene glycol;
(c) from about 10% w/v to about 30% w/v of glycerin,
(d) water, and
(e) a sufficient amount of a buffer to maintain the pH of the oral solution from about 4.5 to about 5.5.
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