For orders over 50€, we deliver quickly and reliably directly to your home
MOVEFREE
Acetyl-L-Carnitine (ALCAR) – Mitochondrial Energy for Brain and Nerves
Acetyl-L-Carnitine (ALCAR) is the acetylated form of L-carnitine and the only carnitine variant that effectively crosses the blood-brain barrier. In the brain, it serves as a direct acetyl group donor for acetylcholine synthesis and simultaneously supports mitochondrial energy production – a rare dual talent among nootropics.
ALCAR vs. L-Carnitine: The Crucial Difference
| Property | L-Carnitine | Acetyl-L-Carnitine (ALCAR) |
|---|---|---|
| Blood-Brain Barrier | Poor | Very good |
| Primary Effect | Fatty acid transport into mitochondria (muscles) | Cognition, neuroprotective, acetylcholine |
| Acetyl Group Donor | No | Yes → direct for acetylcholine synthesis |
| Area of Application | Sports, fat metabolism | Cognition, neuropathy, anti-aging |
| Cost | Cheaper | More expensive |
Mechanisms of Action
- Acetylcholine Synthesis: The acetyl group from ALCAR is directly used for the ChAT (Choline acetyltransferase) reaction → increased ACh production in the brain
- Mitochondrial Function: Improves carnitine palmitoyltransferase activity in neurons → better energy production in the brain
- NGF Induction: Increases Nerve Growth Factor → promotes neurogenesis and neuronal repair
- Antioxidant: Reduces mitochondrial ROS production, protects mitochondrial DNA
- mTOR Modulation: Promotes autophagy at low doses
Clinical Evidence
| Application Area | Effect | Dosage | Evidence |
|---|---|---|---|
| Alzheimer's / MCI (Mild Cognitive Impairment) | Slowed cognitive decline, improved scores | 1,500–3,000 mg/day | Very well documented (Cochrane Review) |
| Diabetic Neuropathy | Pain reduction, improved nerve conduction velocity | 1,500–3,000 mg/day | Very well documented |
| Depression (elderly + fatigue) | Mood improvement, comparable to amitriptyline in one study | 1,500–3,000 mg/day | Well documented |
| Male Fertility / Erectile Dysfunction | Improved sperm motility and erection in cases of vascular problems | 2,000 mg/day | Moderate |
| Cognition (young/healthy) | Improvement in chronic fatigue, reaction time | 1,000–2,000 mg/day | Moderate |
ALCAR in Nootropic Practice
ALCAR is a classic component of cholinergic nootropic stacks:
- ALCAR + Alpha-GPC: ALCAR provides acetyl groups, Alpha-GPC provides choline → synergistic for acetylcholine synthesis
- ALCAR + Racetams (Piracetam, Aniracetam): Classic stack – Racetams increase ACh receptor sensitivity, ALCAR increases ACh production
- ALCAR + ALA (Alpha-Lipoic Acid): Combination showing synergy for mitochondrial anti-aging effects in studies
Dosage
- Cognition / Focus: 500–1,500 mg/day, in the morning
- Therapeutic (Neuropathy, Alzheimer's): 1,500–3,000 mg/day, divided into 2–3 doses
- Intake: On an empty stomach or with a light meal; not in the evening (can impair sleep due to stimulating effect)
- Cycling: 5 days on, 2 days off recommended for long-term use
Frequently Asked Questions (FAQ)
ALCAR and Sleep Disorders?
ALCAR can impair sleep in some individuals (stimulation due to increased ACh and noradrenaline activity). Last intake recommended by 2 PM at the latest. If sleep problems occur, switch to L-Carnitine Tartrate.
Can ALCAR cause "fishy" odor?
Like L-carnitine, ALCAR can be converted to TMAO by the gut microbiome, which can cause a fishy body odor. This primarily affects individuals with a certain gut flora composition. The frequency is lower with ALCAR than with L-carnitine.
