Medication·Interactions·Reviewed June 9, 2026
Desloratadine interactions.
Desloratadine has 3 documented interactions in the NutriStack database. The full interaction list is below. None of this is a substitute for your prescriber's advice.
Desloratadine at a glance.
A quick, data-grounded summary. The full tables are below.
Desloratadine has 3 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 desloratadine.
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 |
|---|---|---|
| L-Theanine | Caution | L-theanine may compound mild antihistamine-related fatigue or reduced alertness. |
| Melatonin | Caution | Melatonin may add to fatigue or somnolence in patients who are sensitive to desloratadine. |
| Quercetin | Synergy | Quercetin is sometimes used for allergic symptom support and may overlap with desloratadine goals. |
The full desloratadine profile.
Uses, typical dosing, side effects, and the cited evidence for this medication.
Common desloratadine questions.
Quick answers drawn from the tables above.
What interacts with Desloratadine?
In the NutriStack database, Desloratadine has 3 documented interactions. The most notable include L-Theanine, Melatonin, and Quercetin. Check any specific combination before taking it and confirm with your prescriber.
Is it safe to take L-Theanine with Desloratadine?
NutriStack classifies the L-Theanine and Desloratadine pairing as caution: L-theanine may compound mild antihistamine-related fatigue or reduced alertness. Avoid stacking calming supplements if desloratadine causes drowsiness. Always confirm with your prescriber.
Check your whole stack
See how desloratadine fits your supplements.
NutriStack screens your full routine for interactions and depletions, and updates the moment you change it.