Dutasteride/Tamsulosin and Nifedipine Interaction
Drug interaction information between Dutasteride/Tamsulosin and Nifedipine.
Dutasteride/Tamsulosin and Nifedipine have a documented minor interaction in FDA labeling.
FDA drug labeling documents a minor-severity interaction between Dutasteride/Tamsulosin and Nifedipine. This page displays the available source-record category and label text. The category is not an individual risk estimate or medication-combination direction.
How They Interact
These two drugs do not interfere with each other, so the amount of medicine in your body stays the same.
FDA Label Information
7.3 Nifedipine, Atenolol, Enalapril Tamsulosin Dosage adjustments are not necessary when tamsulosin is administered concomitantly with nifedipine, atenolol, or enalapril [see Clinical Pharmacology ( 12.3 ) ] .
Dutasteride/Tamsulosin Also Interacts With
- Furosemide major
- Tamsulosin moderate
- Warfarin moderate
- Paroxetine minor
- Atenolol minor
Nifedipine Also Interacts With
- Theophylline major
- Phenytoin moderate
- Nirmatrelvir/Ritonavir moderate
- Tacrolimus Topical moderate
- Fluoxetine minor
Frequently Asked Questions
What SPL severity band is on file for Dutasteride/Tamsulosin + Nifedipine?
Compiled FDA labeling labels this pair minor. That is a source-record field, not an individual medication-combination decision.
Which drug in this pair has the larger labeled-interaction portfolio?
Nifedipine has 26 labeled pairs on file vs Dutasteride/Tamsulosin's 15. In the minor band specifically: Dutasteride/Tamsulosin has 12 (also Paroxetine, Atenolol, Diltiazem, Ketoconazole); Nifedipine has 22 (also Fluoxetine, Fluconazole, Erythromycin, Clarithromycin).
What mechanism field is on file for Dutasteride/Tamsulosin and Nifedipine?
These two drugs do not interfere with each other, so the amount of medicine in your body stays the same.
Nifedipine's labeled portfolio outnumbers Dutasteride/Tamsulosin
SPL source-record counts only. This page's band is minor · classes on file: Dutasteride/Tamsulosin (5-ARI / Alpha-Blocker Combination); Nifedipine (Calcium Channel Blocker).
1 major · 2 moderate · 12 minor · 15 total
- Other minor peers for Dutasteride/Tamsulosin
- Paroxetine
- Atenolol
- Diltiazem
- Ketoconazole
1 major · 3 moderate · 22 minor · 26 total
- Other minor peers for Nifedipine
- Fluoxetine
- Fluconazole
- Erythromycin
- Clarithromycin
Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. This registry does not provide individual medication-combination directions.
Read our methodology - how this data is sourced, computed, and verified.