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GRANPIDAM is a brand name for Sildenafil. The medicine, its uses, side effects and dosage are the same regardless of brand.
Used for: Adults Treatment of adult patients with pulmonary arterial hypertension classified as WHO functional class II and III, to improve exercise capacity. Efficacy has been shown in primary pulmonary hypertension and pulmonary hypertension associated with connective tissue disease. Paediatric population Treatment of…
Verbatim from this product's MHRA label. Tap a section to expand.
Treatment should only be initiated and monitored by a physician experienced in the treatment of pulmonary arterial hypertension. In case of clinical deterioration in spite of Granpidam treatment, alternative therapies should be considered.
Posology Adults The recommended dose is 20 mg three times a day (TID). Physicians should advise patients who forget to take Granpidam to take a dose as soon as possible and then continue with the normal dose. Patients should not take a double dose to compensate for the missed dose.
Paediatric population (1 year to 17 years) For paediatric patients aged 1 year to 17 years old, the recommended dose in patients ≤20 kg is 10 mg three times a day and for patients >20 kg is 20 mg three times a day. 1). The 20 mg tablet should not be used in cases where 10 mg TID should be administered in younger patients.
Other pharmaceutical forms are available for administration to patients ≤20 kg and other younger patients who are not able to swallow tablets. Patients using other medicinal products In general, any dose adjustment should be administered only after a careful benefit- risk assessment.
A downward dose adjustment to 20 mg twice daily should be considered when sildenafil is co-administered to patients already receiving CYP3A4 inhibitors like erythromycin or saquinavir. A downward dose adjustment to 20 mg once daily is recommended in case of co-administration with more potent CYP3A4 inhibitors clarithromycin, telithromycin and nefazodone.
For the use of sildenafil with the most potent CYP3A4 inhibitors, see section
Summary of the safety profile In the pivotal placebo-controlled study of sildenafil in pulmonary arterial hypertension, a total of 207 patients were randomized to and treated with 20 mg, 40 mg, or 80 mg TID doses of sildenafil and 70 patients were randomized to placebo.
The duration of treatment was 12 weeks. 9% with placebo. Of the 277 subjects treated in the pivotal study, 259 entered a long-term extension study. Doses up to 80 mg three times a day (4 times the recommended dose of 20 mg three times a day) were administered and after 3 years 87% of 183 patients on study treatment were receiving sildenafil 80 mg TID.
In a placebo-controlled study of sildenafil as an adjunct to intravenous epoprostenol in pulmonary arterial hypertension, a total of 134 patients were treated with sildenafil (in a fixed titration starting from 20 mg, to 40 mg and then 80 mg, three times a day, as tolerated) and epoprostenol, and 131 patients were treated with placebo and epoprostenol.
The duration of treatment was 16 weeks. 7% in the placebo/epoprostenol treated patients. Newly reported adverse reactions, which occurred more frequently in the sildenafil/ epoprostenol group, were ocular hyperaemia, vision blurred, nasal congestion, night sweats, back pain and dry mouth.
The known adverse reactions headache, flushing, pain in extremity and oedema were noted in a higher frequency in sildenafil/epoprostenol treated patients compared to placebo/epoprostenol treated patients. Of the subjects who completed the initial study, 242 entered a long-term extension study.
Doses up to 80 mg TID were administered and after 3 years 68% of 133 patients on study treatment were receiving sildenafil 80 mg TID. In the two placebo-controlled studies adverse events were generally mild to moderate in severity. The most commonly reported adverse reactions that occurred (greater or equal to 10%) on sildenafil compared to placebo were headache, flushing, dyspepsia, diarrhoea and pain in extremity.
The efficacy of sildenafil has not been established in patients with severe pulmonary arterial hypertension (functional class IV). g. 2). The benefit-risk balance of sildenafil has not been established in patients assessed to be at WHO functional class I pulmonary arterial hypertension.
1). The use of sildenafil in other forms of PAH is not recommended. In the long term paediatric extension study, an increase in deaths was observed in patients administered doses higher than the recommended dose. 1). Retinitis pigmentosa The safety of sildenafil has not been studied in patients with known hereditary degenerative retinal disorders such as retinitis pigmentosa (a minority of these patients have genetic disorders of retinal phosphodiesterases) and therefore its use is not recommended.
4). Cardiovascular risk factors In post-marketing experience with sildenafil for male erectile dysfunction, serious cardiovascular events, including myocardial infarction, unstable angina, sudden cardiac death, ventricular arrhythmia, cerebrovascular haemorrhage, transient ischaemic attack, hypertension and hypotension have been reported in temporal association with the use of sildenafil.
Most, but not all, of these patients had pre-existing cardiovascular risk factors. Many events were reported to occur during or shortly after sexual intercourse and a few were reported to occur shortly after the use of sildenafil without sexual activity.
It is not possible to determine whether these events are related directly to these factors or to other factors. Priapism Sildenafil should be used with caution in patients with anatomical deformation of the penis (such as angulation, cavernosal fibrosis or Peyronie’s disease), or in patients who have conditions which may predispose them to priapism (such as sickle cell anaemia, multiple myeloma or leukaemia).
Prolonged erections and priapism have been reported with sildenafil in post- marketing experience. In the event of an erection that persists longer than 4 hours, the patient should seek immediate medical assistance. 8). Vaso-occlusive crises in patients with sickle cell anaemia Sildenafil should not be used in patients with pulmonary hypertension secondary to sickle cell anaemia.
3. 5). Special populations Elderly (≥65 years) Dose adjustments are not required in elderly patients. Clinical efficacy as measured by 6-minute walk distance could be less in elderly patients. Renal impairment Initial dose adjustments are not required in patients with renal impairment, including severe renal impairment (creatinine clearance <30 ml/min).
A downward dose adjustment to 20 mg twice daily should be considered after a careful benefit-risk assessment only if therapy is not well-tolerated. Hepatic impairment Initial dose adjustments are not required in patients with hepatic impairment (Child- Pugh class A and B).
A downward dose adjustment to 20 mg twice daily should be considered after a careful benefit-risk assessment only if therapy is not well-tolerated. 3). 1). The safety and efficacy of sildenafil in other conditions in children below 1 year of age has not been established.
No data are available. Discontinuation of treatment Limited data suggest that the abrupt discontinuation of sildenafil is not associated with rebound worsening of pulmonary arterial hypertension. However to avoid the possible occurrence of sudden clinical deterioration during withdrawal, a gradual dose reduction should be considered.
Intensified monitoring is recommended during the discontinuation period. Method of administration Granpidam is for oral use only. Tablets should be taken approximately 6 to 8 hours apart with or without food. 1. 1). 5). g. 5). 4). The safety of sildenafil has not been studied in the following sub-groups of patients and its use is therefore contraindicated: Severe hepatic impairment, Recent history of stroke or myocardial infarction, Severe hypotension (blood pressure <90/50 mmHg) at initiation.
Not medical advice. Always read the patient information leaflet and follow your prescriber or pharmacist.
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In a study to assess the effects of different dose levels of sildenafil the safety data for sildenafil 20 mg TID (recommended dose) and for sildenafil 80 mg TID (4 times the recommended dose), were consistent with the established safety profile of sildenafil in previous adult PAH studies.
Tabulated list of adverse reactions Adverse reactions which occurred in >1% of sildenafil-treated patients and were more frequent (>1% difference) on sildenafil in the pivotal study or in the sildenafil combined data set of both the placebo-controlled studies in pulmonary arterial hypertension, at doses of 20, 40 or 80 mg TID are listed in Table 1 below by class and frequency grouping (very common (≥1/10), common (≥1/100 to <1/10), uncommon (≥1/1,000 to ≤1/100) and not known (cannot be estimated from the available data).
Within each frequency grouping, adverse reactions are presented in order of decreasing seriousness. Reports from post-marketing experience are included in italics. 0) Adverse reaction Infections and infestations Common cellulitis, influenza, bronchitis, sinusitis, rhinitis, gastroenteritis Blood and lymphatic system disorders Common anaemia Metabolism and nutrition disorders Common fluid retention Psychiatric disorders Common insomnia, anxiety Nervous system disorders Very common headache Common migraine, tremor, paraesthesia, burning sensation, hypoaesthesia Eye disorders Common retinal haemorrhage, visual impairment, vision blurred, photophobia, chromatopsia, cyanopsia, eye irritation, ocular hyperaemia Uncommon visual acuity reduced, diplopia, abnormal sensation in eye Not known Non-arteritic anterior ischaemic optic neuropathy (NAION)*, Retinal vascular occlusion*, Visual field defect* Ear and labyrinth disorders Common vertigo Not known sudden hearing loss Vascular disorders Very common flushing Not known hypotension Respiratory, thoracic and mediastinal disorders Common epistaxis, cough, nasal congestion Gastrointestinal disorders Very common diarrhoea, dyspepsia Common gastritis, gastrooesophageal reflux disease, haemorrhoids, abdominal distension, dry mouth Skin and subcutaneous tissue disorders Common alopecia, erythema, night sweats Not known rash Musculoskeletal and connective tissue disorders Very common pain in extremity Common myalgia, back pain Renal and urinary disorders Uncommon haematuria Reproductive system and breast disorders Uncommon penile haemorrhage, haematospermia, gynaecomastia Not known priapism, erection increased General disorders and administration site conditions Common pyrexia *These adverse events/reactions have been reported in patients taking sildenafil for the treatment of male erectile dysfunction (MED).
Paediatric population In the placebo-controlled study of sildenafil in patients 1 to 17 years of age with pulmonary arterial hypertension, a total of 174 patients were treated three times a day with either low (10 mg in patients >20 kg; no patients ≤20 kg received the low dose), medium (10 mg in patients ≥8-20 kg; 20 mg in patients ≥20-45 kg; 40 mg in patients >45 kg) or high dose (20 mg in patients ≥8-20 kg; 40 mg in patients ≥20-45 kg; 80 mg in patients >45 kg) regimens of sildenafil and 60 were treated with placebo.
The adverse reactions profile seen in this paediatric study was generally consistent with that in adults (see table above). 5%), vomiting […]
In a clinical study events of vaso-occlusive crises requiring hospitalisation were reported more commonly by patients receiving sildenafil than those receiving placebo leading to the premature termination of this study. Visual events Cases of visual defects have been reported spontaneously in connection with the intake of sildenafil and other PDE5 inhibitors.
8). 3). 5). In order to minimise the potential for developing postural hypotension, patients should be haemodynamically stable on alpha-blocker therapy prior to initiating sildenafil treatment. Physicians should advise patients what to do in the event of postural hypotensive symptoms.
Bleeding disorders Studies with human platelets indicate that sildenafil potentiates the antiaggregatory effect of sodium nitroprusside in vitro. There is no safety information on the administration of sildenafil to patients with bleeding disorders or active peptic ulceration.
Therefore sildenafil should be administered to these patients only after careful benefit-risk assessment. Vitamin K antagonists In pulmonary arterial hypertension patients, there may be a potential for increased risk of bleeding when sildenafil is initiated in patients already using a Vitamin K antagonist, particularly in patients with pulmonary arterial hypertension secondary to connective tissue disease.
Veno-occlusive disease No data are available with sildenafil in patients with pulmonary hypertension associated with pulmonary veno-occlusive disease. However, cases of life threatening pulmonary oedema have been reported with vasodilators (mainly prostacyclin) when used in those patients.
Consequently, should signs of pulmonary oedema occur when sildenafil is administered in patients with pulmonary hypertension, the possibility of associated veno-occlusive disease should be considered. Galactose intolerance Lactose monohydrate is present in the tablet film coat.
Patients with rare hereditary problems of galactose intolerance, the total lactase deficiency or glucose-galactose malabsorption should not take this medicine. Use of sildenafil with bosentan The efficacy of sildenafil in patients already on bosentan therapy has not […]