Olmesartan and hydrochlorothiazide and Triamterene interaction

If the ECG shows no widening of the QRS or arrhythmia in the presence of hyperkalemia, it is usually sufficient to discontinue Dyrenium (triamterene) and any potassium supplementation, and substitute a thiazide alone.

Drug Interactions Caution should be used when lithium and diuretics are used concomitantly because diuretic-induced sodium loss may reduce the renal clearance of lithium and increase serum lithium levels with risk of lithium toxicity.

The effects of the following drugs may be potentiated when given together with triamterene: antihypertensive medication, other diuretics, preanesthetic and anesthetic agents, skeletal muscle relaxants (non-depolarizing).

Hypotension in Volume or Salt-Depleted Patients In patients with an activated renin-angiotensin system, such as volume-or salt-depleted patients ( e.g., those being treated with high doses of diuretics), symptomatic hypotension may occur after initiation of treatment with olmesartan medoxomil and hydrochlorothiazide tablets.

• Non-Steroidal Anti-Inflammatory Drugs (NSAIDs): Reduced diuretic, natriuretic and antihypertensive effects; increased risk of renal toxicity ( 7.3 )

Non-Steroidal Anti-Inflammatory Agents Including Selective Cyclooxygenase-2 Inhibitors (COX-2 Inhibitors) Olmesartan medoxomil In patients who are elderly, volume-depleted (including those on diuretic therapy), or with compromised renal function, co-administration of NSAIDs, including selective COX-2 inhibitors, with angiotensin II receptor antagonists (including olmesartan…

Hydrochlorothiazide In some patients the administration of an NSAID can reduce the diuretic, natriuretic, and antihypertensive effects of thiazide diuretics.

Use of Hydrochlorothiazide with Other Drugs When administered concurrently the following drugs may interact with thiazide diuretics: Antidiabetic drugs (oral agents and insulin): Dosage adjustment of the antidiabetic drug may be required.