Hopantenic Acid (Pantogam).
Russian GABA analog for cognitive support and calm
Reviewed March 2026
- Category
- Nootropic
- Also filed under
- GABA AnalogCognitiveCalm
What Hopantenic Acid (Pantogam) is, and what it does.
- Does it work
- Suits people exploring calm-focused nootropics who accept a small human record of 7 published papers. If you take medicines acting on the nervous system, ask a clinician first.
- How much to take
- Start with 250 to 750mg a day, usually split into two or three servings. The 1,500mg used in trials is a research condition, not a daily target.
- Time to feel it
- Reports describe change building over two to four weeks of daily use rather than in the first sitting. Any settling effect is gradual.
- The first dose
- Day one is usually quiet. A mildly settled feeling is possible, and the thinking side is described as building over weeks rather than showing up on a first serving.
- With regular use
- Most effects take 2-8 weeks. Be patient.
- How well tolerated
- Generally well tolerated. Check with your doctor if on medications.
- How it feels
- People describe a quiet settling rather than sedation, with thinking that feels less scattered. Nothing sharp or stimulating. The change described builds gradually over weeks.
- The overlooked benefit
- It looks like a vitamin B5 relative, but the GABA swap means it doesn't feed coenzyme A. It won't cover B5 needs, so keep pantothenic acid separate.
250 to 750mg a day is where Hopantenic Acid (Pantogam) works.
Source: Zavadenko & Suvorinova, Zhurnal Nevrologii, 2013; Russian pharmaceutical data
The proof, claim by claim.
These words describe the research, not the molecule's worth. Research strength is how much work stands behind one claim, and it is never a product score.
Hopantenic Acid (Pantogam) has emerging evidence. Based on 7+ studies.
- cognitive supportNarrative review
- everyday calm and stress toleranceRandomised trial
- carrier chemistry that moves a GABA structure more readily than free GABAIn vitro study
Questions people ask about Hopantenic Acid (Pantogam).
- When should I take it?
- Timing matters less than consistency. Pick a time that works for you and take it daily.
- Can I take it with other supplements?
- Usually fine. The main thing to watch is not doubling up on the same ingredient from different products. If you're on prescription meds, check with your pharmacist first.
- Any side effects to watch for?
- Most people tolerate it well at recommended doses. GI upset is the most common complaint with any supplement. Start with a lower dose and work up. If something feels off, stop and reassess.
- Who benefits most from this?
- People who've already covered the basics (diet, sleep, exercise) and want to fine-tune. It's not essential, but could be worthwhile for the right person.
Why these belong in the same formula. Each row says what the basis is, from settled biochemistry through to a trial that measured the pair.
Hopantenic acid is a homologue of pantothenic acid carrying a GABA unit in place of beta-alanine, and it can act as a pantothenate antagonist in CoA-dependent steps. Pairing the two in one formula sets up competition rather than addition.
Interference with pantothenate and CoA handling draws on the same acyl transfer economy that carnitine serves, and lower carnitine status is a recorded consequence of hopantenate use. Carnitine is the counterweight formulators add for that reason.
Hopantenic acid is a GABA homologue acting on GABAergic tone. Glycine is the other main inhibitory transmitter and works through its own receptor, so the two do not compete.
Hopantenic acid is pantoic acid joined to gamma-aminobutyric acid, so a GABA moiety is part of the molecule rather than a separate ingredient in the stack. Taking supplemental GABA alongside it adds a second GABAergic input, which is worth flagging rather than assuming it stacks cleanly. Anyone combining the two may notice a more calming effect rather than simply more of the same.
Pyridoxal 5-phosphate is the cofactor for glutamate decarboxylase, the enzyme that makes GABA from glutamate in the body. That places B6 upstream of the same neurotransmitter system a pantoyl-GABA compound engages. The relationship is textbook biochemistry rather than a combination trial.
Magnesium sits at the NMDA receptor as a voltage-dependent block and also influences GABA-A signalling, which is the same broad direction as a GABA-derived nootropic. Combined use can feel more sedating than either alone. That is a dosing consideration, not a documented interaction from a trial of the pair.
Theanine raises alpha-wave activity and dampens glutamatergic tone at ordinary supplement doses. Paired with a GABA derivative the calming direction is shared, so the two are commonly formulated together for that reason. No trial has measured the pair, so the grounding is mechanistic.
Melatonin shortens the time to sleep onset through the MT1 and MT2 receptors, a different mechanism from GABAergic quieting. Used in the same evening dose the two effects add. Worth knowing if the hopantenic acid is being taken for daytime focus rather than at night.
Valerian constituents interact with GABA-A binding sites and reduce GABA reuptake in laboratory work. That overlaps directly with a GABA-derived compound. The combination is a sedation-additive pairing to flag, not a performance stack.
Passionflower flavonoids show GABA-A activity in binding studies. Layering it onto a pantoyl-GABA compound pushes the same inhibitory direction. Early grounding, and the practical note is additive drowsiness.
Apigenin binds the benzodiazepine site of the GABA-A receptor in laboratory assays. Combined with hopantenic acid the shared target means the effects can compound. This is receptor-level evidence, not a human combination study.
Honokiol and magnolol act as positive modulators at GABA-A in preclinical work. Paired with a GABA derivative the calming effect adds. Flagged for the additive direction rather than any measured benefit of the pair.
Caffeine blocks adenosine receptors and raises arousal, the opposite direction from a GABAergic compound. Stacked together each blunts what the other is doing at the level of subjective alertness. People combine them deliberately for a calm-alert feel, and the trade is a less predictable effect from either.
Alpha-GPC supplies choline for acetylcholine synthesis and crosses into the brain readily. Combined with a GABA derivative the two act on different transmitter systems. The pairing is rational rather than measured.
Phosphatidylserine is a structural membrane phospholipid with an effect on cortisol response to exertion. That is a separate axis from GABAergic signalling, which is why the two appear together in calm-focus formulas. Grounding is mechanistic only.
Bacopa acts largely through cholinergic and antioxidant routes over weeks of use, whereas a GABA derivative acts on inhibitory tone. The two are stacked for non-overlapping mechanisms. No combination data exists.
Inositol is the backbone of the phosphatidylinositol second-messenger system that several serotonin and adrenergic receptors signal through. That places it downstream of receptors a GABA derivative does not touch. Early grounding, offered as a mechanism rather than a measured pairing.
Nothing specific on file for Hopantenic Acid (Pantogam). Match the label to the daily amount above, and tell your doctor what you take.
Not medical advice. Show the label to your pharmacist.What Hopantenic Acid (Pantogam) actually does.
Hopantenic acid is the calcium salt of D-pantoyl-gamma-aminobutyric acid: a pantoic acid residue amide-linked to GABA in place of the beta-alanine found in pantothenic acid.
Because the beta-alanine of pantothenic acid is replaced by GABA, the molecule is a structural analogue of vitamin B5 and is not a source of coenzyme A the way pantothenate is.
GABA is the principal inhibitory neurotransmitter of the mammalian central nervous system, acting at ionotropic GABA-A and metabotropic GABA-B receptors.
Endogenous GABA is made from glutamate by glutamate decarboxylase, an enzyme that requires pyridoxal 5-phosphate, and is cleared by GABA transaminase.
Where Hopantenic Acid (Pantogam) comes from.
It is made in a factory, not pulled out of a plant. Chemists join two building blocks, one from the vitamin B5 family and one that is GABA itself, then turn the result into a stable calcium powder.
Chemically synthesised. The molecule is identical to the one a plant or an animal makes, and building it deliberately means a known purity, a fixed dose and no crop contaminants. For several nutrients this is the only route that reaches a usable amount.
D-pantolactone is the same chiral building block used for pantothenate manufacture, obtained by resolution of racemic pantolactone. GABA is produced industrially either by chemical synthesis or by microbial fermentation with glutamate decarboxylase-active bacteria.
The lactone ring is opened by the amine of GABA, forming the pantoyl-GABA amide. This is the step that distinguishes the molecule from pantothenic acid, where beta-alanine occupies the same position.
The crude amide is crystallised to remove unreacted GABA, hydrolysis by-products and the wrong-handed pantoyl isomer.
Neutralisation with a calcium source gives calcium hopantenate, which is dried and milled to a tablet-grade or capsule-grade powder.
Brands rarely state whether the GABA input was chemically synthesised or fermented, and the two routes give the same finished molecule.
Getting Hopantenic Acid (Pantogam) from food.
The whole-food sources on file. A supplement closes the gap, it does not replace dinner.
A gram-for-gram figure (how much of each you would eat to match a dose) will appear here once it is sourced and reviewed. This page will not print a number it cannot cite.
The forms it comes in.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.