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(triamterene USP) Capsules 50 mg and 100 mg
Abnormal elevation of serum potassium levels (greater than or equal to 5.5 mEq/liter) can occur with all potassium-sparing agents, including Dyrenium. Hyperkalemia is more likely to occur in patients with renal impairment and diabetes (even without evidence of renal impairment), and in the elderly or severely ill. Since uncorrected hyperkalemia may be fatal, serum potassium levels must be monitored at frequent intervals especially in patients receiving Dyrenium, when dosages are changed or with any illness that may influence renal function.
Each capsule for oral use, with opaque red cap and body, contains Triamterene USP, 50 or 100 mg, and is imprinted with the product name, DYRENIUM, strength (50 mg or 100 mg) and WPC 002 (for the 50- mg strength) and WPC 003 (for the 100-mg strength). Inactive ingredients consist of D&C Red No. 33, FD&C Yellow No. 6, Gelatin NF, Lactose NF, Magnesium Stearate NF, Sodium Lauryl Sulfate NF, Titanium Dioxide USP and Silicon Dioxide NF. Triamterene is 2,4,7-triamino-6-phenyl-pteridine:
Its molecular weight is 253.27. At 50°C, triamterene is slightly soluble in water. It is soluble in dilute ammonia, dilute aqueous sodium hydroxide and dimethylformamide. It is sparingly soluble in methanol.
What are the possible side effects of triamterene (Dyrenium)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using this medication and call your doctor at once if you have any of these serious side effects:
- numbness or tingly feeling;
- muscle pain or weakness;
- slow, fast, or uneven heartbeat;
- feeling drowsy, restless, or light-headed;
- urinating less than usual or not at all;
- shallow breathing;
- tremors, confusion; or
- nausea, stomach pain, low fever, loss of...
What are the precautions when taking triamterene (Dyrenium)?
See also Warning and How to Use sections.
Before taking triamterene, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: severe kidney disease (inability to make urine), severe liver disease, high potassium blood level.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney problems (e.g., kidney stones), liver problems, other untreated salt/mineral imbalance (e.g., low sodium blood...
Last reviewed on RxList: 4/5/2016
This monograph has been modified to include the generic and brand name in many instances.
Additional Dyrenium Information
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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