Answer
Cimetidine raises tamsulosin plasma levels and furosemide lowers them, but levels remain within the normal range, so no tamsulosin dose adjustment is needed.
Sources for this answer
- Flomaxtra XL, 400 micrograms, film-coated prolonged release tabletAstellas Pharma Ltd · emc · SmPC §4.5 Interaction with other medicinal products · Version 15Document updated
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