Bulk Alpha-GPC: Sourcing and Handling for Manufacturers
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Alpha-GPC (L-alpha-glycerylphosphorylcholine) is one of the most requested choline sources in the sports nutrition and nootropics categories. Prized for its high choline content and water solubility, it is also one of the trickiest powders to handle in production due to its extreme hygroscopicity. This guide covers what formulators need to know before buying alpha-GPC in bulk.
What Is Alpha-GPC?
Alpha-GPC (CAS 28319-77-9) is a choline-containing phospholipid derived from lecithin. It is supplied as a white powder with an assay of 98.0–102.0% and is freely soluble in water. Among common choline sources, alpha-GPC delivers one of the highest percentages of choline by weight, which is why it dominates premium cognitive and pre-workout formulations.
The Handling Challenge: Hygroscopicity
Alpha-GPC is highly hygroscopic — left exposed to ambient air, the powder absorbs moisture rapidly and can turn from a free-flowing powder into a gel-like mass within hours in humid conditions. This is the single most important factor in working with it:
Keep containers sealed until the moment of use, and reseal immediately.
Weigh and blend in low-humidity environments where possible.
Consider climate-controlled storage in summer months.
A 50% granulation on a carrier (silica or similar) exists on the market specifically to ease handling; pure powder offers maximum potency per gram but demands stricter moisture control.
Typical Applications
Pre-workout powders: a staple ingredient in the focus/pump segment.
Nootropic capsules and stacks: often combined with citicoline, L-theanine, or bacopa.
Functional beverages: its water solubility makes it beverage-compatible, though moisture management in powdered drink formats is critical.
Regulatory Considerations in Canada
Cognitive and performance ingredients are generally regulated under the Natural Health Products (NHP) framework in Canada, requiring a Natural Product Number (NPN) and compliant claims. Confirm the applicable monograph and dosage limits for your product category early in development.
Specifications at a Glance
CAS number: 28319-77-9
Assay: 98.0–102.0%
Appearance: white powder, neutral odour, highly hygroscopic
Solubility: freely soluble in water
pH: 4.5–7.0
A full certificate of analysis (COA) is available on request for every lot.
Buying Bulk Alpha-GPC in Canada
LiquidShop supplies alpha-GPC in bulk by the kilogram for Canadian supplement and beverage manufacturers. Sourcing from a Canadian supplier means shorter transit times — which matters more than usual for a hygroscopic ingredient — and simplified logistics. Certificates of analysis are available on request. Contact us for bulk pricing.
