More Information on Telmisartan Interactions
When you are taking telmisartan with a diuretic, your blood pressure may decrease too much. This is more likely to occur when telmisartan is first started. In order to decrease the chances of developing this telmisartan interaction, your healthcare provider may change the dosages of either medicine, start you on a lower dose of telmisartan, and monitor you more closely.
Taking telmisartan with one group of diuretics (known as potassium-sparing diuretics) may cause increased blood potassium (hyperkalemia), which can cause serious problems. Diuretics in this group include:
- Amiloride (Midamor) or amiloride-HCTZ (Moduretic)
- Spironolactone (Aldactone) or spironolactone-HCTZ (Aldactazide)
- Triamterene (Dyrenium) or triamterene/HCTZ (Dyazide, Maxzide).
If you take telmisartan with a potassium-sparing diuretic, your healthcare provider should monitor your potassium levels to make sure they do not become too high.
Combining lithium with telmisartan may cause increase levels of lithium in the blood, possibly leading to lithium toxicity. More frequent monitoring of your lithium levels is recommended.
Nonsteroidal Anti-Inflammatory Drugs (NSAIDs)
Telmisartan can interact with NSAIDs in several ways. The combination could cause your blood pressure to increase or may cause swelling (edema), especially if you have congestive heart failure (CHF). If you are elderly, have kidney disease or kidney failure, or are taking a diuretic ("water pill") or are dehydrated, taking NSAIDs and telmisartan together may cause kidney failure. Talk to your healthcare provider about this potential drug interaction before taking these medications together.
If you are taking a potassium supplement with telmisartan, the levels of potassium in your blood may become too high. This can cause serious problems. For your particular situation, talk to your healthcare provider about using potassium and telmisartan together.