Acetyl L-Carnitine (ALCAR)

What It Is:
A brain-boosting form of carnitine that crosses the blood–brain barrier, helping convert fat into energy while supporting mental focus.

What It’s Used For:

• Cognitive support and focus under fatigue

• Mild fat metabolism aid

• Often used in “fat burner” or nootropic blends

Typical Dose:

• 500–2,000 mg daily, usually taken in the morning or pre-workout

Side Effects:

• Mild nausea or restlessness possible at higher doses

• Can cause a “fishy” odour in sweat in some users

Why It’s Rated 3/5:
Solid for focus and cognitive clarity; decent fat-transport support, but not a game-changer physically.