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Does Telmisartan And Hydrochlorothiazide Interact with Angiotensin Ii?

Telmisartan And Hydrochlorothiazide and Angiotensin Ii have a major drug interaction according to U.S. FDA drug labeling data. Dual blockade of renin-angiotensin system associated with increased risks of hypotension, hyperkalemia, and renal impairment without additional cardiovascular benefit. The mechanism involves dual ras blockade increases risk of adverse renal and hemodynamic effects. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.

Severity
Major
Telmisartan And Hydrochlorothiazide Class
Angiotensin 2 Receptor Blocker
Angiotensin Ii Class
Vasoconstrictor
Management
Close medical supervision required
Data Source
U.S. FDA via OpenFDA

How This Interaction Works

The interaction between Telmisartan And Hydrochlorothiazide and Angiotensin Ii occurs because dual ras blockade increases risk of adverse renal and hemodynamic effects. Clinically, this means dual blockade of renin-angiotensin system associated with increased risks of hypotension, hyperkalemia, and renal impairment without additional cardiovascular benefit. This is classified as a major interaction, meaning it could cause serious harm if not properly managed. Your healthcare provider may need to adjust dosages, substitute one medication, or increase monitoring frequency.

What To Tell Your Doctor or Pharmacist

If you are taking Telmisartan And Hydrochlorothiazide and your doctor is considering prescribing Angiotensin Ii (or vice versa), make sure to:

  • Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
  • Ask whether the benefits of combining these medications outweigh the risks for your specific situation
  • Ask what symptoms to watch for that would indicate the interaction is causing problems
  • Ask how frequently you should be monitored while these are co-prescribed
  • Ask whether any dosage adjustments are needed
  • Never stop or change either medication without first consulting your healthcare provider
💊 Telmisartan And Hydrochlorothiazide(Telmisartan And Hydrochlorothiazide)+💊 Angiotensin Ii(Angiotensin Ii)

Severity & Interaction Details

⚠️
major
Use with caution — major interaction
Serious risk of clinically significant harm. Generally avoid; if used, monitor closely.
Severity scale
MinorContra
On record
Yes
Drug A class
Angiotensin 2 Receptor Blocker
Drug B class
Vasoconstrictor
Source
NLP:telmisartan and hydrochlorothiazide

What this means in plain English

Dual blockade of renin-angiotensin system associated with increased risks of hypotension, hyperkalemia, and renal impairment without additional cardiovascular benefit.

What the FDA label says

"Dual RAS blockade increases risk of adverse renal and hemodynamic effects"

📖 Source: NLP:telmisartan and hydrochlorothiazide

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Data sourced from U.S. FDA drug labeling via openFDA and the NIH National Library of Medicine. For informational purposes only. Always consult your pharmacist or physician.