VERAPAMIL Film-coated tablets Ref.[7556] Active ingredients: Verapamil

Posology

Adults

Hypertension: initially 120mg twice daily increasing to 160mg twice daily where necessary. In some cases doses of up to 480mg daily, in divided doses, have been used. A further reduction in blood pressure may be obtained by combining verapamil with other antihypertensive agents, in particular diuretics. For concomitant administration with beta-blockers, see section 4.4.

Angina: 120mg three times daily is recommended. 80mg three times daily may be completely satisfactory in some patients with angina of effort. Less than 120mg three times daily is unlikely to be effective in variant angina.

Supraventricular tachycardias: 40-120mg three times daily depending on the severity of the condition.

Paediatric population

A paradoxical increase in the rate of arrhythmias in children has been noted. Therefore, verapamil should only be used under expert supervision.

Up to 2 years: 20mg 2-3 times a day.

2 years and above: 40-120mg 2-3 times a day according to age and effectiveness.

Elderly

The adult dose is recommended unless liver or renal function is impaired (see section 4.4).

Method of Administration

For oral administration.

The course of symptoms in verapamil intoxication depends on the amount taken, the point in time at which detoxification measures are taken and myocardial contractility (age-related). The main symptoms are as follows: blood pressure fall (at times to values not detectable), shock symptoms, loss of consciousness, 1st and 2nd degree AV block (frequently as Wenckebach’s phenomenon with or without escape rhythms), total AV block with total AV dissociation, escape rhythm, asystole, bradycardia up to high degree AV block and, sinus arrest, hyperglycaemia, stupor and metabolic acidosis. Fatalities have occurred as a result of overdose.

The therapeutic measures to be taken depend on the point in time at which verapamil was taken and the type and severity of intoxication symptoms. In intoxications with large amounts of slow-release preparations, it should be noted that the release of the active drug and the absorption in the intestine may take more than 48 hours. Verapamil hydrochloride cannot be removed by haemodialysis. Depending on the time of ingestion, it should be taken into account that there may be some lumps of incompletely dissolved tablets along the entire length of the gastrointestinal tract, which function as active drug depots.

General measures to be taken: Gastric lavage with the usual precautions, even later than 12 hours after ingestion, if no gastrointestinal motility (peristaltic sounds) is detectable. Where intoxication by a modified release preparation is suspected, extensive elimination measures are indicated, such as induced vomiting, removal of the contents of the stomach and the small intestine under endoscopy, intestinal lavage, laxative, high enemas. The usual intensive resuscitation measures apply, such as extrathoracic heart massage, respiration, defibrillation and/or pacemaker therapy.

Specific measures to be taken: Elimination of cardiodepressive effects, hypotension or bradycardia. The specific antidote is calcium, e.g. 10 20ml of a 10% calcium gluconate solution administered intravenously (2.25-4.5mmol), repeated if necessary or given as a continuous drip infusion (e.g. 5mmol/hour).

The following measures may also be necessary: In case of 2nd or 3rd degree AV block, sinus bradycardia, asystole – atropine, isoprenaline, orciprenaline or pacemaker therapy. In case of hypotension – dopamine, dobutamine, noradrenaline (norepinephrine). If there are signs of continuing myocardial failure – dopamine, dobutamine, if necessary repeated calcium injections.

Shelf life: Three years from the date of manufacture.

Store below 25°C in a dry place.

The product containers are rigid injection moulded polypropylene or injection blow-moulded polyethylene containers and snap-on polyethylene lids; in case any supply difficulties should arise the alternative is amber glass containers with screw caps.

The product may also be supplied in blister packs and cartons:

• Carton: Printed carton manufactured from white folding box board.
• Blister pack: (i) 250µm white rigid PVC. (ii) Surface printed 20µm hard temper aluminium foil with 5-6g/M2 PVC and PVdC compatible heat seal lacquer on the reverse side.

Pack size: 28s, 30s, 56s, 60s, 84s, 90s, 100s, 112s, 120s, 168s, 180s, 250s, 500s, 1000s.

Product may also be supplied in bulk packs, for reassembly purposes only, in polybags contained in tins, skillets or polybuckets filled with suitable cushioning material. Bulk packs are included for temporary storage of the finished product before final packaging into the proposed marketing containers.

Maximum size of bulk packs: 50,000.

Not applicable.