Supplement·Interactions·Reviewed June 9, 2026
GABA interactions.
GABA has 10 documented interactions in the NutriStack database: 7 that need timing or caution and 3 that work synergistically. The full list, with what each pairing does, is below.
GABA at a glance.
A quick, data-grounded summary. The full table is below.
GABA has 10 documented interactions in the NutriStack database: 7 that need timing or caution and 3 that work synergistically. The full list, with what each pairing does, is below.
Everything that interacts with gaba.
Every supplement and medication in the NutriStack database with a documented interaction with this substance, highest-severity first. Open any pair for the mechanism and sources.
| Substance | Interaction | What happens |
|---|---|---|
| Alprazolam | Caution | Supplemental GABA may have mild sedative and anxiolytic effects, though its ability to cross the blood-brain barrier is debated. If any GABA does... |
| Ashwagandha | Caution | Ashwagandha has GABA-mimetic activity, so stacking it with supplemental GABA can produce additive sedation and pronounced drowsiness. details → |
| Ketamine | Caution | Supplemental GABA used as a calming or sleep aid may add to ketamine's sedative and dissociative load, deepening drowsiness and impairing... |
| Lorazepam | Caution | Supplemental GABA may have sedative effects that could add to lorazepam's CNS depression. Although the extent of oral GABA's blood-brain barrier... |
| Melatonin | Caution | Combined use for sleep can produce additive drowsiness and next-morning grogginess, and both lower nighttime arousal. |
| Passionflower | Caution | Both target GABAergic tone, so combining supplemental GABA with passionflower can produce additive calming and sedative effects. |
| Valerian Root | Caution | Additive sedation and CNS depression, which can cause excessive drowsiness, especially if combined with alcohol or other sedatives. details → |
| Glycine | Synergy | Combining GABA with glycine layers two distinct inhibitory neurotransmitter systems, which can deepen overall central nervous system calming and... details → |
| L-Theanine | Synergy | Complementary calming effect, with L-theanine promoting relaxed alertness and increasing alpha brain-wave activity alongside GABA's inhibitory... |
| Magnesium Glycinate | Synergy | Magnesium glycinate complements oral GABA by supporting GABAergic tone, contributing to a calmer state and easier sleep onset. |
The full gaba profile.
Benefits, dosing by goal, forms, and the cited evidence for this supplement.
Common gaba questions.
Quick answers drawn from the table above.
What interacts with GABA?
In the NutriStack database, GABA has 10 documented interactions with other supplements and medications. The most notable include Alprazolam, Ashwagandha, Ketamine, Lorazepam, and Melatonin.
What works well with GABA?
GABA pairs synergistically with Glycine, L-Theanine, and Magnesium Glycinate in the NutriStack database. Synergy still depends on dose and timing; open any pair for the detail.
Can you take GABA with Alprazolam?
NutriStack classifies the GABA and Alprazolam pairing as caution: Supplemental GABA may have mild sedative and anxiolytic effects, though its ability to cross the blood-brain barrier is debated. If any GABA does reach the CNS, it... Use caution when combining GABA supplements with alprazolam. While oral GABA's CNS penetration is limited, the theoretical additive effect warrants...
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