Melegh B, Kerner J, Sandor A, et al
The reason is your metabolism
While results from supplementation may be fairly similar, they are different nutrients
While both types of supplements can increase carnitine levels, acetyl-L-carnitine has a little better absorption and may cross the blood-brain barrier more effectively.[ref] Carnitine is also available as an injectable or IV, available at health spas or clinics
PASC that persist for more than 4 weeks after the acute infection are termed long COVID [12, 26, 31], with varying incidences between 10 and 70% of infected COVID-19 patients developing long COVID symptoms, depending on the study population examined, e.g., non-hospitalized, hospitalized or vaccinated patients, etc
doi:10.3390/nu10030349 [4] Andreozzi GM