L-alpha-glycerylphosphorylcholine, choline alfoscerate, alpha-glycerophosphocholine · Evidence-based safety and harm-reduction overview.
| Also known as | L-alpha-glycerylphosphorylcholine, choline alfoscerate, alpha-glycerophosphocholine |
| Category | Nootropic |
| choline_content | About 40 percent by weight |
| first_isolated | 1970s |
| regulatory_status_us | Dietary supplement ingredient |
| natural_sources | Eggs, meat, fish, dairy (in small amounts) |
| US legal status | Alpha-GPC is sold in the United States as a dietary supplement ingredient and is also used in foods. It is not approved by the FDA as a drug to treat any disease. In some other countries it is used as a prescription medicine. |
Alpha-GPC is a choline-containing compound found naturally in the body and in some foods. It is used as a source of choline, a precursor to the neurotransmitter acetylcholine and to cell membrane phospholipids. The compound is a phosphatidylcholine metabolite that serves multiple roles in cellular function.
Alpha-GPC serves as a source of choline, which is an essential precursor for acetylcholine synthesis in the central nervous system. It also provides cytidine-5-monophosphate (after hydrolysis), supporting phospholipid synthesis and cell membrane integrity. The compound thus supports both neurotransmitter production and structural neuronal function.
Alpha-GPC (choline alfoscerate) was first isolated and characterized in the 1970s and has been used clinically in Europe and other countries for cognitive decline and neurological conditions. It became available as a dietary supplement in the US and is also added to some functional foods. The compound has decades of clinical use in other countries.
Research suggests alpha-GPC can raise choline availability, and some studies report effects on cognition in clinical populations such as people with cognitive impairment, as well as possible effects on physical performance markers. Evidence in healthy adults is more limited and mixed, and larger high-quality trials are still needed. Several trials have industry sponsorship.
In studies, alpha-GPC has been administered at oral doses ranging from approximately 600 milligrams to 1.2 grams daily, often in divided doses. Clinical trials have typically lasted from weeks to several months. Some research examined single acute doses for performance-related outcomes.
This is general research/context information, not medical advice or a recommended protocol.
Alpha-GPC has been studied alongside other choline sources and cognitive supplements, though modern evidence for beneficial combinations is limited. Some research pairs it with other compounds in multi-ingredient formulas. Informational only.
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Compare testing optionsYes. It is sold as a dietary supplement ingredient in the US, though it is not FDA-approved as a drug to treat any condition.
We do not give dosing advice. Talk with a qualified clinician, particularly if you take other medications or have heart concerns.
No. Alpha-GPC is one specific choline-containing compound; it provides choline but differs from sources like choline bitartrate or citicoline in form and absorption.
Alpha-GPC is naturally present in the body and in foods, particularly those rich in phosphatidylcholine such as eggs, meat, and dairy products.
Research suggests it provides choline that the body can convert to acetylcholine, though the functional significance and magnitude of any effect in healthy adults remain unclear.
Medical & legal disclaimer. This site is for informational and harm-reduction purposes only. It is not medical advice and is not a substitute for a licensed healthcare professional. The compounds discussed are largely not approved by the FDA for human use and many are sold strictly as research chemicals 'not for human consumption.' Nothing here is an endorsement to purchase, possess, or use any substance. Laws vary by jurisdiction. Always consult a qualified physician and follow the law where you live.
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