FLOMAX capsules are contraindicated in patients known to be hypersensitive to tamsulosin HCI or any component of FLOMAX capsules.
Should overdosage of FLOMAX capsules lead to hypotension (See WARNINGS and ADVERSE REACTIONS), support of the cardiovascular system is of first importance. Restoration of blood pressure and normalization of heart rate may be accomplished by keeping the patient in the supine position. If this measure is inadequate, then administration of intravenous fluids should be considered. If necessary, vasopressors should then be used and renal function should be monitored and supported as needed. Laboratory data indicate that tamsulosin HCI is 94% to 99% protein bound; therefore, dialysis is unlikely to be of benefit.
One patient reported an overdose of thirty 0.4 mg FLOMAX capsules. Following the ingestion of the capsules, the patient reported a severe headache.