is l-carnitine good for dogs LiquiCarn 4oz (120mL) L-Carnitine Injection 100ml – vet-n-pet
Description
42 : 8993 Marzo A, Cardace G, Corbelleta C, Bassani E, Morabito E, Arrigoni Martelli E et al

Interestingly, a placebo-controlled study (6) has shown that substantial elevations (~20%) of muscle carnitine content do occur in humans following prolonged daily supplementation with carnitine tartrate when carbohydrate is ingested at the same time

That means you might not have any symptoms

Amelioration of the depression of HIV-infected subjects with L-acetyl carnitine therapy

Loss of muscle carnitine palmitoyltransferase 2 prevents Diet-Induced obesity and insulin resistance despite Long-Chain acylcarnitine accumulation

24 DG (glare radius measured in millimeters) was correlated for statistical significance with visual acuity at red and green targets at baseline and 9-month examination interval in the total samples of older subjects with cataract and noncataract older adult subjects (Table 5)