Bladder spasm
Belladonna and opium - b&o supprettes ®
Drug Category: Analgesic Combination. Urinary Antispasmodic Agent. CLINICAL PHARMACOLOGY Through its parasympatholytic action, atropine relaxes smooth muscle resulting from parasympathetic stimulation. It is the dl isomer of l-hyoscyamine and therefore exhibits the same clinical effects. It is, however, approximately one-half as active peripherally as lhyoscyamine, the latter being the major active plant alkaloid. The dl isomer atropine is formed during the process of isolation of the belladonna extract.1 Morphine, the major active principle of powdered opium, is responsible for the action of powdered opium although the other alkaloids present also contribute to it. The sedative and analgesic action of morphine, the effect desired by inclusion in belladonna and opium suppositories of powdered opium, are thought to be due to the depressant effect on the cerebral cortex, hypothalamus and medullary centers. In large doses, the opiates and their analogs also exhibit synaptic conduction in the spinothalamic tracts, depress the function of the reticular formation, the lemniscus and the thalamic relays, and inhibit spinal synaptic reflexes: but these inhibitor actions should not be elicited with therapeutic doses of the drug. Moderate doses of powdered opium should not alter the electroencephalogram. The action of morphine consists mainly of a descending depression of the central nervous system. It exerts its analgesic action by increasing the pain threshold or the magnitude of stimulus required to evoke pain and by dulling the sensibility or reaction to pain. In addition to its action in abolishing pain, morphine induces a sense of well-being (euphoria) facilitating certain mental processes while retarding others. Upon absorption of morphine, oxidative dealkylation to produce nor-compounds appears to be the first step in the reaction sequence which imparts analgesia. Morphine is conjugated in the liver to form the 3-glucuronide which passes into the bile and is reabsorbed and excreted in the urine. The atropine effect of the belladonna extract serves to eliminate morphine induced smooth muscle spasm without affecting the sedative analgesic action of powdered opium. INDICATIONS AND USAGE CONTRAINDICATIONS WARNINGS PRECAUTIONS Pregnancy Category C Nursing Mothers ADVERSE REACTIONS Not recommended for use in children 12 years of age and under. Store at room temperature. DO NOT REFRIGERATE. PROTECT FROM MOISTURE DURING STORAGE. HOW SUPPLIED Belladonna (16.2 mg) and Opium (60 mg) suppositories are easy to open, color coded and available in cartons of 12's. Schedule II controlled substances-DEA order required. |
Fesoterodine fumarate - toviaz®
INDICATIONS AND USAGE Toviaz is a muscarinic antagonist indicated for the treatment of overactive bladder with symptoms of urge urinary incontinence, urgency, and frequency. DOSAGE AND ADMINISTRATION The daily dose of Toviaz should not exceed 4 mg in the following populations: --Patients with severe renal impairment (CLCR <30 mL/min) Toviaz is not recommended for use in patients with severe hepatic impairment (Child-Pugh C). Toviaz should be taken with liquid and swallowed whole. Toviaz can be administered with or without food, and should not be chewed, divided, or crushed. HOW SUPPLIED Toviaz (fesoterodine fumarate) extended-release tablets 8 mg are blue, oval, biconvex, film-coated, and engraved with "FT" on one side. They are supplied as follows: |
Flavoxate (urispas ®)
Flavoxate hydrochloride counteracts smooth muscle spasm of the urinary tract and exerts its effect directly on the muscle.
In a single study of 11 normal male subjects, the time to onset of action was 55 minutes. The peak effect was observed at 112 minutes. 57% of the flavoxate hydrochloride was excreted in the urine within 24 hours. INDICATIONS AND USAGE: ---------------------------------------------------------------------------------------- One or two 100 mg tablets 3 or 4 times a day. With improvement of symptoms, the dose may be reduced. This drug cannot be recommended for infants and children under 12 years of age because safety and efficacy have not been demonstrated in this age group. CONTRAINDICATIONS: WARNINGS AND PRECAUTIONS: PRECAUTIONS----- Patients should be informed that if drowsiness and blurred vision occur, they should not operate a motor vehicle or machinery or participate in activities where alertness is required. Carcinogenesis, Mutagenesis, Impairment of Fertility Pregnancy Reproduction studies have been performed in rats and rabbits at doses up to 34 times the human dose and revealed no evidence of impaired fertility or harm to the fetus due to flavoxate hydrochloride. There are, however, no well-controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed. Nursing Mothers Pediatric Use ADVERSE REACTIONS Gastrointestinal: Nausea, vomiting, dry mouth. CNS: Vertigo, headache, mental confusion, especially in the elderly, drowsiness, nervousness. Hematologic: Leukopenia (one case which was reversible upon discontinuation of the drug). Cardiovascular: Tachycardia and palpitation. Allergic: Urticaria and other dermatoses, eosinophilia and hyperpyrexia. Ophthalmic: Increased ocular tension, blurred vision, disturbance in eye accommodation. Renal: Dysuria. DOSAGE FORMS AND STRENGTHS: Store at 20° - 25°C (68° - 77°F) [see USP Controlled Room Temperature]. Dispense contents in a tight, light-resistant container. SOURCE: |
Hyoscyamine (levsin ®)
CLINICAL PHARMACOLOGY Levsin® inhibits specifically the actions of acetylcholine on structures innervated by postganglionic cholinergic nerves and on smooth muscles that respond to acetylcholine but lack cholinergic innervation. These peripheral cholinergic receptors are present in the autonomic effector cells of the smooth muscle, cardiac muscle, the sinoatrial node, the atrioventricular node, and the exocrine glands. At therapeutic doses, it is completely devoid of any action on autonomic ganglia. Levsin® inhibits gastrointestinal propulsive motility and decreases gastric acid secretion. Levsin® also controls excessive pharyngeal, tracheal and bronchial secretions. Levsin® is absorbed totally and completely by sublingual administration as well as oral administration. Once absorbed, Levsin® disappears rapidly from the blood and is distributed throughout the entire body. The half-life of Levsin® is 2 to 3½ hours. Levsin® is partly hydrolyzed to tropic acid and tropine but the majority of the drug is excreted in the urine unchanged within the first 12 hours. Only traces of this drug are found in breast milk. Levsin® passes the blood brain barrier and the placental barrier. Dosage Oral (timed release): Children >12 years and Adults: Gastrointestinal disorders: 0.375-0.75 mg every 12 hours; maximum: 1.5 mg/24 hours I.M., I.V., SubQ: Children >12 years and Adults: Gastrointestinal disorders: 0.25-0.5 mg; may repeat as needed up to 4 times/day, at 4-hour intervals I.V.: Adults: Diagnostic procedures: 0.25-0.5 mg given 5-10 minutes prior to procedure To reduce drug-induced bradycardia during surgery: 0.125 mg; repeat as needed To reverse neuromuscular blockade: 0.2 mg for every 1 mg neostigmine (or the physostigmine/pyridostigmine equivalent) Supplied Injection, solution, as sulfate (Levsin®): 0.5 mg/mL (1 mL) |
Darifenacin (enablex ® )
CLINICAL PHARMACOLOGY General Darifenacin is a competitive muscarinic receptor antagonist. Muscarinic receptors play an important role in several major cholinergically mediated functions, including contractions of the urinary bladder smooth muscle and stimulation of salivary secretion. In vitro studies using human recombinant muscarinic receptor subtypes show that darifenacin has greater affinity for the M3 receptor than for the other known muscarinic receptors (9- and 12-fold greater affinity for M3 compared to M1 and M5, respectively, and 59-fold greater affinity for M3 compared to both M2 and M4). M3 receptors are involved in contraction of human bladder and gastrointestinal smooth muscle, saliva production, and iris sphincter function. Adverse drug effects such as dry mouth, constipation and abnormal vision may be mediated through effects on M3 receptors in these organs INDICATIONS AND USAGE CONTRAINDICATIONS Hepatic dosing: Moderate impairment (Child-Pugh Class B): Daily dosage should not exceed 7.5 mg/day. Severe impairment (Child-Pugh Class C): Use is not recommended. Supplied: Extended release tablet: 7.5 mg, 15 mg. |
Mirabegron - myrbetriq™
Drug UPDATE: MYRBETRIQ ® (mirabegron) extended-release tablets, for oral use [Drug information / PDF] Dosing: Click (+) next to Dosage and Administration section (drug info link) ABBREVIATED MONOGRAPH - SEE PACKAGE INSERT. Initial U.S. Approval: 2012 Mechanism of Action: Mirabegron is an agonist of the human beta-3 adrenergic receptor (AR) as demonstrated by in vitro laboratory experiments using the cloned human beta-3 AR. Mirabegron relaxes the detrusor smooth muscle during the storage phase of the urinary bladder fill-void cycle by activation of beta-3 AR which increases bladder capacity. Although mirabegron showed very low intrinsic activity for cloned human beta-1 AR and beta-2 AR, results in humans indicate that beta-1 AR stimulation occurred at a mirabegron dose of 200 mg. INDICATIONS AND USAGE: MYRBETRIQ® is a beta-3 adrenergic agonist indicated for the treatment of overactive bladder (OAB) with symptoms of urge urinary incontinence, urgency, and urinary frequency DOSAGE AND ADMINISTRATION 25 mg is effective within 8 weeks. Based on individual efficacy and tolerability, may increase dose to 50 mg once daily ( 2.1, 14). Swallow whole with water, do not chew, divide or crush ( 2.1). Patients with Severe Renal Impairment or Patients with Moderate Hepatic Impairment: Maximum dose is 25 mg once daily ( 2.2, 8.6, 8.7, 12.3). Patients with End Stage Renal Disease (ESRD) or Patients with Severe Hepatic Impairment: Not recommended ( 2.2, 8.6, 8.7, 12.3). HOW SUPPLIED: WARNINGS AND PRECAUTIONS: Urinary Retention in Patients With Bladder Outlet Obstruction and in Patients Taking Antimuscarinic Drugs for Overactive Bladder: Administer with caution in these patients because of risk of urinary retention. Patients Taking Drugs Metabolized by CYP2D6: Myrbetriq is a moderate inhibitor of CYP2D6. Appropriate monitoring is recommended and dose adjustment may be necessary for narrow therapeutic index CYP2D6 substrates. |
Oxybutynin (ditropan ®)
CLINICAL PHARMACOLOGY Oxybutynin chloride exerts a direct antispasmodic effect on smooth muscle and inhibits the muscarinic action of acetylcholine on smooth muscle. Oxybutynin chloride exhibits only one fifth of the anticholinergic activity of atropine on the rabbit detrusor muscle, but four to ten times the antispasmodic activity. No blocking effects occur at skeletal neuromuscular junctions or autonomic ganglia (antinicotinic effects). Oxybutynin chloride relaxes bladder smooth muscle. In patients with conditions characterized by involuntary bladder contractions, cystometric studies have demonstrated that oxybutynin chloride increases bladder (vesical) capacity, diminishes the frequency of uninhibited contractions of the detrusor muscle, and delays the initial desire to void. Oxybutynin chloride thus decreases urgency and the frequency of both incontinent episodes and voluntary urination. Antimuscarinic activity resides predominately in the R-isomer. A metabolite, desethyloxybutynin, has pharmacological activity similar to that of oxybutynin in in vitro studies. Exhibits 20% of the anticholinergic activity of atropine, however, has 4 to 10 times the antispasmodic activity. INDICATIONS AND USAGE CONTRAINDICATIONS DITROPAN is also contraindicated in patients who have demonstrated hypersensitivity to the drug substance or other components of the product. Dosing (Adults): Elderly: 2.5 to 5 mg 2-3 times/day Administration Supplied |
Solifenacin (vesicare ® )
Clinical Pharmacology Solifenacin is a competitive muscarinic receptor antagonist. Muscarinic receptors play an important role in several major cholinergically mediated functions, including contractions of urinary bladder smooth muscle and stimulation of salivary secretion. INDICATIONS AND USAGE CONTRAINDICATIONS Dosing (Adults): Overactive bladder: 5 mg orally once daily. If tolerated, may increase to 10 mg orally once daily. Renal Dosing: Use with caution in patients with reduced renal function ( Clcr <30 ml/minute: 5 mg/day). Hepatic impairment: Use with caution in reduced hepatic function: Moderate: 5 mg/day. Severe impairment: Not recommended. Supplied: 5 mg, 10 mg tablet. |
Tolterodine (detrol ® )
Tolterodine is a competitive muscarinic receptor antagonist. Both urinary bladder contraction and salivation are mediated via cholinergic muscarinic receptors.
INDICATIONS AND USAGE: ---------------------------------------------------------------------------------------- EXTENDED RELEASE: Dosage Adjustment in Specific Populations Dosage Adjustment in Presence of Concomitant Drugs CONTRAINDICATIONS: WARNINGS AND PRECAUTIONS: PRECAUTIONS Risk of Urinary Retention and Gastric Retention Decreased Gastrointestinal Motility Controlled Narrow-Angle Glaucoma Central Nervous System (CNS) Effects Reduced Hepatic and Renal Function Myasthenia Gravis Patients with Congenital or Acquired QT Prolongation Information for Patients Drug Interactions USE IN SPECIFIC POPULATIONS: DOSAGE FORMS AND STRENGTHS: SOURCE: |
Trospium (sanctura ® )
CLINICAL PHARMACOLOGY SANCTURA® is an antispasmodic, antimuscarinic agent. Trospium chloride antagonizes the effect of acetylcholine on muscarinic receptors in cholinergically innervated organs. Its parasympatholytic action reduces the tonus of smooth muscle in the bladder. Receptor assays showed that trospium chloride has negligible affinity for nicotinic receptors as compared to muscarinic receptors at concentrations obtained from therapeutic doses. INDICATIONS AND USAGE CONTRAINDICATIONS WARNINGS AND PRECAUTIONS Angioedema Decreased Gastrointestinal Motility Controlled Narrow-angle Glaucoma Central Nervous System Effects Anticholinergic Adverse Reactions in Patients with Moderate Renal Impairment ------------------------------------------------------- Dosage modification is recommended in the following patient populations: In geriatric patients greater than or equal to 75 years of age, dose may be titrated down to 20 mg once daily based upon tolerability. XR CAPSULES: SANCTURA XR® is not recommended for use in patients with severe renal impairment (creatinine clearance less than 30 mL/minute) Supplied: XR CAPSULES: Store at controlled room temperature 20° to 25°C (68° to 77°F). Excursion permitted at 15° to 30°C (see USP).
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Reference(s)
National Institutes of Health, U.S. National Library of Medicine, DailyMed Database.
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