The possible side effects of using triamterene and hydrochlorothiazide tablets include headaches, gas, dizziness, frequent urination and lightheadedness. Most of these side effects tend to occur when adjusting medication. Patients should inform adoctor if the effects persist or worsen, as stated by the National Institutes of Health's MedlinePlus.
In some cases, the side effects can be serious and a patient may experience rapid pulse, vomiting, tiredness, appetite loss, breathing problems, flu-like symptoms, irregular heartbeat, dry mouth and fever, among others. Immediate medical attention is necessary should such effects appear.
When using triamterene and hydrochlorothiazide tablets, it is necessary to follow the doctor's advice. Severe side effects may prompt the doctor to send a report to the United States Food and Drug Administration. However, a severe side effect due to an allergic reaction is usually rare. To avoid lightheadedness and dizziness, it is advisable to get up slowly from a sitting position, as stated by Drugs.com.
The combination of triamterene and hydrochlorothiazide is used in treating edema and hypertension in patients experiencing low potassium levels. These medications belong to a group of drugs called diuretics and work by triggering the kidneys to get rid of excess sodium and water from the body, but inhibit the removal of potassium.