See Supplemental Patient Information
- Potassium-sparing agents, including triamterene can cause abnormal elevation of serum potassium levels [US Black Box Warning]
- Hypersensitivity reactions have been reported, hence monitor the patients regularly for the possible occurrence of blood dyscrasias, liver damage or other idiosyncratic reactions
- Monitor BUN and serum potassium periodically to check kidney function, especially in patients with suspected or confirmed renal insufficiency
- Obtain an ECG if hyperkalemia is present or suspected. Discontinue the drug and any potassium supplementation, if ECG shows no widening of the QRS or arrhythmia in the presence of hyperkalemia and substitute thiazide alone. The presence of a widened QRS complex or arrhythmia in association with hyperkalemia requires prompt additional therapy
- Administer sodium polystyrene sulfonate to enhance the excretion of excess potassium or remove it by dialysis. Infuse 44 mEq of sodium bicarbonate or 10 mL of 10% calcium gluconate or calcium chloride over several minutes for tachyarrhythmia
- Diuretic agent including triamterene can cause electrolyte imbalance, especially in patient with congestive heart failure, renal disease or cirrhosis
- Low-salt syndrome has been reported with the use of full doses of a diuretic when salt intake is restricted
- Triamterene can cause a decrease in alkali reserve, resulting in metabolic acidosis
- Megaloblastosis has been observed in patients with low folic acid, as triamterene is a weak folic acid antagonist. Perform blood studies periodically in these patients and also for exacerbations of underlying liver disease
- Triamterene elevates uric acid, especially in persons predisposed to gouty arthritis
Cautions: Use cautiously in
- Renal impairment
- Hepatic impairment
- Histories of renal stones
- Gouty arthritis
- Diabetes mellitus
- Elderly or severely ill
Supplemental Patient Information
- Advise patient to take drug after meals preferably in the morning to minimize the effect of increased frequency of urination on nighttime sleep
- Advise patient not take more than the prescribed dose at the next dosing interval, if a dose is missed
Pregnancy Category:C
Breastfeeding: It is not a reason to discontinue breastfeeding, if triamterene is required by the mother. However an alternate drug may be preferred, as no information is available on the use of triamterene during breastfeeding. This information is based upon LactMed database (available at http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT last accessed 29 April 2011). Manufacturer advises to stop nursing, if use of the triamterene is deemed essential.
Pricing data from www.DrugStore.com in U.S.A.
- Dyrenium 100 MG CAPS [Bottle] (WELLSPRING PHARMACEUTICAL CORP)
30 mg = $75.99
90 mg = $205.97 - Dyrenium 50 MG CAPS [Bottle] (WELLSPRING PHARMACEUTICAL CORP)
30 mg = $49.99
90 mg = $126.99
Warning: This pricing information is subject to change at the sole discretion of DS Pharmacy. For the most current and up-to-date pricing information, please visit drugstore.com.
Drug Name: Dyrenium 100 MG Oral Capsule
Pill Image:
[
See full size image]
Ingredient(s): Triamterene
Imprint: DYRENIUM;100;mg;WPC;003
Color(s): Red
Shape: Capsule
Size (mm): 10.00
Score: 1
Inactive Ingredient(s): d&c red no. 33 / fd&c yellow no. 6 / gelatin / lactose / magnesium stearate / sodium lauryl sulfate / titanium dioxide / silicon dioxide
Drug Label Author:
WellSpring Pharmaceutical Corporation
DEA Schedule:
Non-Scheduled
Drug Name: Dyrenium 50 MG Oral Capsule
Pill Image:
[
See full size image]
Ingredient(s): Triamterene
Imprint: DYRENIUM;50;mg;WPC;002
Color(s): Red
Shape: Capsule
Size (mm): 10.00
Score: 1
Inactive Ingredient(s): d&c red no. 33 / fd&c yellow no. 6 / gelatin / lactose / magnesium stearate / sodium lauryl sulfate / titanium dioxide / silicon dioxide
Drug Label Author:
WellSpring Pharmaceutical Corporation
DEA Schedule:
Non-Scheduled