those skilled in the art including but not limited to simple crystallization and chromatography on a chiral substrate can also be used the magnitude of a prophylactic or therapeutic dose of s oxybutynin in the acute or chronic management of disease will vary with the severity and nature of the condition to be treated and the route of administration the dose and perhaps the dose frequency will also vary according to the age body weight and response of the individual patient in general the total daily dose range for s oxybutynin for the conditions described herein is from about 1 mg to about 100 mg in single or divided doses preferably in divided doses in managing the patient the therapy should be initiated at a lower dose perhaps at about 0 25 mg to about 25 mg and increased up to about 100 mg depending on the patient 39 s global response it is further recommended that patients over 65 years and those with impaired renal or hepatic function initially receive low doses and that they be titrated based on individual response s and blood level s it may be necessary to use dosages outside these ranges in some cases as will be apparent to those skilled in the art further it is noted that the clinician or treating physician will know how and when to interrupt adjust or terminate therapy in conjunction with individual patient response the terms 34 a therapeutically effective amount 34 and 34 an amount sufficient to treat incontinence but insufficient to cause adverse effects 34 are.