gaba
16 interactions related to gaba
diazepam + kava
Kava's kavalactones act on the GABA-A receptor, the same system diazepam enhances, so combining them produces additive central nervous system depression and excessive sedation. A published case report describes a man who became semicomatose within days of adding kava to a benzodiazepine. Kava also carries a separate, documented liver-safety signal.
lemon balm + valerian
Lemon balm (Melissa officinalis) and valerian (Valeriana officinalis) both act on the brain's GABA system but at different points — valerian's valerenic acid nudges the GABA-A receptor while lemon balm's rosmarinic acid slows the enzyme that breaks GABA down — and the combination has been used as a gentle aid for restlessness and sleep difficulty. The effect is mild rather than pharmaceutical.
clonazepam + passionflower
Clonazepam is a benzodiazepine that calms the brain by enhancing GABA, its main inhibitory neurotransmitter. Passionflower appears to act on the same GABA system and may increase the sedative effect of benzodiazepines. Taken together, the most likely result is additive drowsiness. The human evidence is limited and mostly suggestive, so this is best treated as a caution rather than a proven hazard.
lorazepam + valerian
Valerian root contains valerenic acid and related compounds thought to modulate GABA-A receptor activity. Lorazepam is a benzodiazepine that also enhances GABA signaling. Taking them together may produce additive central nervous system depression, with a theoretical increase in drowsiness, slowed thinking, and impaired coordination. The interaction is mechanism-based and flagged as a precaution; human reports of serious harm are lacking, so it is best treated as a reason for caution rather than alarm.
alprazolam + kava
Kava's active compounds (kavalactones) act on the brain's GABA-A receptor, the same inhibitory system that alprazolam, a benzodiazepine, enhances. Taken together they cause additive central nervous system depression. A published case report describes a previously healthy 54-year-old man who became semi-comatose after three days of combining kava with his prescribed alprazolam, recovering once the kava was stopped. Kava also carries an independently documented risk of liver injury.
zolpidem + valerian
Zolpidem is a Z-drug hypnotic that acts on the GABA-A receptor, and valerian's valerenic acid also has GABA-related sedative activity. In theory the two could add to each other's drowsiness, so it is sensible not to layer them. The best available review of valerian, however, found no evidence of clinically relevant interactions, and there is no human study of this specific combination.
alcohol + zolpidem
Zolpidem (Ambien) and alcohol both increase activity at the GABA-A receptor, producing additive sedation, impaired psychomotor performance, and an elevated risk of complex sleep behaviors, falls, and — at higher levels of intoxication — respiratory depression. The combination is an additive pharmacodynamic effect; the FDA interaction study found no change in zolpidem blood levels from alcohol.
ashwagandha + magnesium
Ashwagandha helps dampen the body's stress-hormone response while magnesium supports the relaxation and nervous-system pathways that let the body wind down. The two act on different parts of the stress-and-sleep system, but no human trial has tested the specific combination, so any added benefit is inferred from each ingredient on its own rather than demonstrated together.
ashwagandha + l-theanine
L-theanine, an amino acid from green tea, produces a relatively quick sense of calm focus by increasing alpha brain-wave activity and gently nudging GABA and other neurotransmitters. Ashwagandha works more slowly, modulating the stress (HPA) axis over weeks of daily use. Because they act through different pathways on different timescales, they are commonly stacked for stress, and there is no known harmful interaction. Importantly, no human trial has tested the combination itself, so the pairing is a mechanistic rationale rather than a proven synergy.
gaba + l-theanine
GABA and L-theanine are often combined in sleep supplements, and the pair may help you fall asleep a little faster and rest more soundly than either alone. The evidence is modest: an animal study and one small uncontrolled human study suggest a benefit, but no controlled human trial has confirmed a true synergy. Both compounds can add to the effects of alcohol and sedatives, so review the combination with your doctor or pharmacist if you take sleep, anxiety, or blood-pressure medication.
passionflower + lemon balm
Passionflower (Passiflora incarnata) and lemon balm (Melissa officinalis) are both traditional calming herbs that act on the brain's GABA system - the main "slow down" signalling network. In laboratory studies, passionflower flavonoids appear to make GABA-A receptors more responsive, while lemon balm compounds appear to slow the breakdown of GABA. Because both lean in the same calming direction, taking them together is plausibly additive. There is, however, no human trial of this specific two-herb pair, so any combined benefit is theoretical and likely mild. The practical point is the shared sedative tendency: combining them with each other, or with other sedatives, can add up.
alcohol + alprazolam
Alcohol and alprazolam (Xanax) both depress the central nervous system by enhancing GABA-A receptor activity. Taken together they produce additive — and sometimes synergistic — sedation, slowed breathing, and impaired coordination, which substantially raises the risk of overdose and death even when neither is taken in a large amount.
alcohol + diazepam
Diazepam (Valium) and alcohol are both central nervous system depressants that act on the GABA-A receptor, producing additive and sometimes greater-than-additive sedation with a real risk of dangerously slowed breathing, loss of consciousness, and death. Diazepam and its active breakdown products linger in the body for days, so the dangerous window extends well beyond a single dose.
valerian tea + benzodiazepines
Valerian (Valeriana officinalis) appears to act on the same GABA-A receptor system as benzodiazepines, so taking the two together may add to the sedative effect. The human evidence is largely theoretical and case-level, but the plausible result is extra drowsiness, slower reaction time, and more next-day grogginess.
l-theanine + magnesium
L-theanine and magnesium are both gentle, non-sedating relaxants that act on the same nervous-system pathways from different angles: L-theanine raises alpha-wave activity and modestly increases GABA, serotonin and dopamine, while magnesium dampens NMDA-receptor excitation and supports GABA-A signalling. A single preclinical study (Dasdelen et al., Frontiers in Nutrition, 2022) found a magnesium-L-theanine complex outperformed L-theanine alone in rats, but no human trial has tested the combination, so the pairing is reasonable rather than proven synergistic in people.
alcohol + valerian
Valerian and alcohol both act on the GABA-A receptor system and are central nervous system depressants. Combining them carries a recognized possibility of additive sedation — more drowsiness, slower reactions, and impaired coordination than either alone. Most of this rests on shared mechanism and expert caution rather than large human outcome trials, but the practical concern is real: impaired driving and falls, particularly in older adults.