Sulbutiamine
Sulbutiamine, a synthetic derivative of thiamine, improves absorption and CNS penetration, used to address thiamine deficiency.
Sulbutiamine is a synthetic vitamin B1 derivative used for thiamine deficiency and cognitive support, though its efficacy for cognitive enhancement lacks robust clinical validation.
Key facts at a glance
- ATC
- A11DA02
- RxNorm
- 37317
- Generic
- Sulbutiamine
- Class
- atc-a11
- Brands
- Arkaliox
- Availability
- rx
- Lactation
- unknown
- Routes
- oral
- Forms
- tablet
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treatment and prevention of thiamine (vitamin B1) deficiency. Historically used in some countries for conditions associated with fatigue, weakness, and cognitive symptoms, though not FDA-approved in the United States for any specific indication.
As a lipophilic derivative of thiamine, sulbutiamine more readily crosses the blood-brain barrier compared to standard thiamine. It is believed to enhance cholinergic and glutamatergic neurotransmission, improve energy metabolism in the brain, and increase thiamine pyrophosphate levels in neural tissue.
Not approved by the FDA for medical use. Limited clinical evidence supports cognitive-enhancing claims. May cause mild side effects such as headache, nausea, or insomnia in some users. Should not replace standard thiamine supplementation in cases of severe deficiency. Consult a healthcare provider before use.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy