l carnitine tartrate topical Nutricost L-Carnitine Powder, 100g, 1g per serving Carnitine Tartrate

Constipation, the second most common non-motor symptom of PD after anosmia, is characterized by infrequent stools, difficult stool passage, or both

[1] [2] [3] [4] In support of energy metabolism, carnitine transports long-chain fatty acids from the cytosol into mitochondria to be oxidized for free energy production, and also participates in removing products of metabolism from cells

1 ALCAR does everything that L-Carnitine does, but can also cross the blood-brain barrier to nourish the brain

However, dosing can vary based on individual needs and what you're trying to achieve

[DOI] [PubMed] [Google Scholar] 185.Krause M, De Vito G

Each serving provides: Vitamin B3: 10mg