Alpha-GPC 600mg

Description

Alpha-GPC 600mg is L-alpha-glycerylphosphorylcholine at the amount the strength studies ran on, 60 servings to the bottle, about 57 cents a serving. The material is standardised to 50 percent, and that figure is where most of the confusion in this corner of the shelf starts. Fifty percent means half the powder is alpha-GPC and half is the carrier that keeps it pourable. So a true alpha-GPC 600mg serving needs 1,200 mg of powder, and a label quoting the larger number is quoting the blend rather than the active.

The two numbers on the panel

Comparing an alpha-gpc 600mg label against the research dose

Published exercise work has used 600 mg taken before a session and measured force production and peak power on isometric and jumping tests. Cognitive studies have more often run 1,200 mg a day, split in two. Those are descriptions of what was administered and what was measured in the literature, not claims about this bottle. The amount is on the front label so you can check it against a paper rather than against an adjective, which is the same principle the performance page applies to creatine and beta-alanine.

It also makes the 50 percent question concrete. If one bottle promises 600 mg and another promises 1,200 mg at the same price, check whether the second is quoting standardised powder. Half of it may be silicon dioxide. We print both weights so the comparison takes a few seconds rather than an email to a manufacturer.

Alpha-gpc 600mg against the other choline forms

Three compounds on this shelf carry choline and they are not interchangeable at face value. Plain choline bitartrate is about 41 percent choline by weight and sells in gram quantities for pennies. Citicoline, cytidine diphosphate-choline, sells in milligrams at 250 to 500 mg and brings a cytidine fraction with it. Alpha-GPC is roughly 40 percent choline by weight, so an alpha-gpc 600mg serving carries somewhere near 240 mg of choline, which is the figure to use if you are counting intake rather than comparing products.

Alpha-gpc 600mg capsules against the bulk powder

Powder is cheaper per gram and almost nobody enjoys handling it, for the hygroscopic reason below. Capsules cost more per gram and remove the weighing, the caking and the guesswork. A capsule also fixes the serving, which matters for a compound where the published work used one defined amount before exercise rather than a scoop measured by eye. If a lower cost per gram matters more to you, the performance page shows which items we stock in tubs and which only in capsules.

Why this one goes sticky

The raw material behind alpha-gpc 600mg pulls water out of the air faster than almost anything else sold as a powder. Left open it cakes, then clumps into a solid mass, and the capsule format is partly a response to that. Keep the desiccant sachet in the bottle, close it straight after use, and do not store it on a windowsill or next to a kettle. None of this changes the assay, but a bottle that has absorbed water weighs more than it did and a scoop no longer means what it says.

Choline, for context

This is one of several choline bearing compounds on the shelf, alongside citicoline and plain choline bitartrate, and the three are dosed and priced in different units. The NIH choline fact sheet lists adequate intake figures and the choline content of foods, which is the cheapest way to see where a capsule sits against a couple of eggs.

Testing

Every lot of alpha-gpc 600mg is identity tested and assayed by a laboratory with no ownership link to us, heavy metals and residual solvents included, since this is a synthesised material rather than a pressed plant. Under strength lots are pulled and the failing report stays public. The certificate guide walks through which lines matter, and everything on the supplements index is handled the same way.