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Clinical Trials Experience
Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.
Adverse reactions occurring at a rate of ≥ 3%, excluding those reported more commonly in placebo, encountered in the INNOPRAN XL placebo-controlled hypertension trials and plausibly related to treatment are shown in Table 1.
Table 1: Treatment Emergent Adverse Reactions Reported
In ≥ 3% of Subjects
|Body System||INNOPRAN XL|
|Fatigue||3 (3%)||4 (5%)||6 (7%)|
|Dizziness (except vertigo)||2 (2%)||6 (7%)||3 (4%)|
|Constipation||0||3 (3%)||1 (1%)|
In addition to adverse reactions reported from clinical trials, the following reactions have been identified during post-marketing use of INNOPRAN XL. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
The following adverse reactions were observed and have been reported with use of formulations of sustained-or immediate-release propranolol.
Allergic: Hypersensitivity reactions, including anaphylactic/anaphylactoid reactions; pharyngitis and agranulocytosis; erythematous rash, fever combined with aching and sore throat, laryngospasm, and respiratory distress.
Autoimmune: Systemic lupus erythematosus (SLE).
Cardiovascular: exacerbation of peripheral arterial disease, arterial insufficiency, usually of the Raynaud type.
Central Nervous System: Light-headedness, mental depression, insomnia, lassitude, weakness, fatigue visual disturbances, hallucinations, vivid dreams, short-term memory loss, emotional lability, slightly clouded sensorium, paresthesia of hands
Genitourinary: Male impotence; Peyronie's disease.
Hematologic: Agranulocytosis, nonthrombocytopenic purpura, thrombocytopenic purpura.
Musculoskeletal: Myopathy, myotonia
Skin and mucous membranes: Stevens-Johnson syndrome, toxic epidermal necrolysis, dry eyes, exfoliative dermatitis, erythema multiforme, urticaria, alopecia, SLE-like reactions, and psoriasisiform rashes.
Read the InnoPran XL (propranolol hydrochloride) Side Effects Center for a complete guide to possible side effects
Pharmacokinetic Drug-Drug Interactions
Impact of Propranolol on Other Drugs
Propafenone: Co-administration of propranolol increases the plasma concentrations of propafenone. Monitor patients for symptoms of excessive exposure to propafenone including bradycardia and postural hypotension [see CLINICAL PHARMACOLOGY].
Impact of Other Drugs on Propranolol
CYP2D6-, CYP1A2-and CYP2C19 Inhibitors: CYP2D6 inhibitors (e.g. bupropion, fluoxetine, paroxetine, quinidine), CYP1A2 inhibitors (e.g., ciprofloxacin, enoxamine, fluvoxamine) and CYP2C19 inhibitors (e.g., fluconazole, fluvoxamine, ticlopidine) increase exposure to propranolol when co-administered with INNOPRAN XL. Monitor patients for bradycardia and hypotension [see CLINICAL PHARMACOLOGY].
CYP1A2 and CYP2C19 Inducers: CYP1A2 inducers (e.g., phenytoin, montelukast, smoking) and CYP2C19 inducers (e.g. rifampin) decrease the plasma levels of propranolol resulting in a loss of efficacy [see CLINICAL PHARMACOLOGY].
Cholestyramine and Colestipol: Co-administered cholestyramine or colestipol significantly reduces the plasma concentrations of co-administered propranolol which may result in loss of efficacy [see CLINICAL PHARMACOLOGY].
Pharmacodynamic Drug-Drug Interactions
Adrenergic Agonists: Beta-blockers may antagonize the antihypertensive effects of clonidine, and rebound hypertension may result if clonidine is withdrawn abruptly. If clonidine and a beta-blocker are co-administered, withdraw the beta-blocker several days before the withdrawal of clonidine
Nonsteroidal Anti-Inflammatory Drugs: Nonsteroidal anti-inflammatory drugs (NSAIDS) may attenuate the antihypertensive effect of beta-adrenoreceptor blocking agents. Monitor blood pressure.
Read the InnoPran XL Drug Interactions Center for a complete guide to possible interactions
Last reviewed on RxList: 12/23/2013
This monograph has been modified to include the generic and brand name in many instances.
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