Medication·Interactions·Reviewed June 9, 2026
Tamsulosin interactions.
Tamsulosin has 5 documented interactions in the NutriStack database. The full interaction list is below. None of this is a substitute for your prescriber's advice.
Tamsulosin at a glance.
A quick, data-grounded summary. The full tables are below.
Tamsulosin has 5 documented interactions in the NutriStack database. The full interaction list is below. None of this is a substitute for your prescriber's advice.
Substances that interact with tamsulosin.
Every supplement and medication in the NutriStack database with a documented interaction with this drug, highest-severity first. Open any pair for the mechanism and sources.
| Substance | Interaction | What happens |
|---|---|---|
| Alcohol | Caution | Tamsulosin can cause orthostatic hypotension, particularly when treatment is started or restarted. Alcohol also worsens orthostatic blood pressure... details → |
| L-Arginine | Caution | L-Arginine can modestly lower blood pressure by increasing nitric-oxide-mediated vasodilation. Tamsulosin can also cause orthostatic hypotension in... details → |
| L-Citrulline | Caution | L-Citrulline raises plasma arginine and can lower blood pressure through nitric-oxide-mediated vasodilation. Tamsulosin has a documented association... details → |
| Pine Bark Extract | Caution | Tamsulosin can cause orthostatic hypotension, especially when it is started or restarted. Pine bark extract products such as pycnogenol have shown... |
| Saw Palmetto | Synergy | Saw palmetto, especially standardized hexanic Serenoa repens extract, has been studied as an add-on to tamsulosin for moderate to severe LUTS/BPH.... details → |
The full tamsulosin profile.
Uses, typical dosing, side effects, and the cited evidence for this medication.
Common tamsulosin questions.
Quick answers drawn from the tables above.
What interacts with Tamsulosin?
In the NutriStack database, Tamsulosin has 5 documented interactions. The most notable include Alcohol, L-Arginine, L-Citrulline, Pine Bark Extract, and Saw Palmetto. Check any specific combination before taking it and confirm with your prescriber.
Is it safe to take Alcohol with Tamsulosin?
NutriStack classifies the Alcohol and Tamsulosin pairing as caution: Tamsulosin can cause orthostatic hypotension, particularly when treatment is started or restarted. Alcohol also worsens orthostatic blood pressure control and can... Avoid or sharply limit alcohol when starting or restarting tamsulosin. If you drink, keep intake low, rise slowly from sitting or lying down, and... Always confirm with your prescriber.
Check your whole stack
See how tamsulosin fits your supplements.
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