Compare every Acetyl L-Carnitine product across UK retailers on Suppio, ranked by true value - price per active dose, not pack size. Prices refreshed daily.
More bioavailable form of L-Carnitine that crosses the blood-brain barrier, supports cognitive function and energy
We rank Acetyl L-Carnitine by price per gram of active ingredient - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
Acetyl L-Carnitine is a more bioavailable version of L-Carnitine, meaning the body can absorb and use it more easily. It is specifically designed to cross the blood-brain barrier, which is the protective layer of cells that controls which substances can enter the brain from the bloodstream.
It is primarily used to support cognitive function, which refers to mental processes like memory and thinking. It is also used to help the body produce energy.
To create this supplement, manufacturers start with L-Carnitine and add an acetyl group, which is a specific cluster of carbon, hydrogen, and oxygen atoms. This chemical modification is what allows the ingredient to enter the brain. The resulting substance is then processed into a stable powder and put into capsules or tablets for sale.
This ingredient is generally mid-range in price. This is because the additional chemical step required to add the acetyl group makes the manufacturing process more complex than producing standard L-Carnitine.
| Purpose | Typical studied dose | Evidence |
|---|---|---|
| mild to moderate dementia or cognitive decline | 1 to 3 grams per day | emerging |
| mild cognitive impairment or mild Alzheimer's disease | 1.5 to 3.0 grams per day | established |
| infertility (sperm parameters) | 1 gram per day to 3 grams per day | emerging |
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
Prices across our retailer network are refreshed at least daily.
More bioavailable form of L-Carnitine that crosses the blood-brain barrier, supports cognitive function and energy
We rank Acetyl L-Carnitine by price per gram of active ingredient - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
Prices across our retailer network are refreshed at least daily.