L-Carnitine

What is it?

L-Carnitine is an amino acid derivative involved in energy production and fat metabolism. It helps transport fatty acids into the mitochondria where they are used for energy, making it popular for fat loss, endurance, recovery, and performance support.

Key Benefits

• Supports fat metabolism and energy production

• May improve endurance and workout performance

• Helps support recovery and muscle function

• Can increase fat utilization during fasted cardio

• May support body recomposition and stamina

Possible Side Effects

Usually mild:

• Injection site irritation

• Nausea

• Diarrhea

• Headache

• Restlessness or insomnia

Less common:

• Fishy body odor at high doses

• Increased appetite

• Hypoglycemia

• Increased seizure risk in epileptics

Interactions & Warnings

Use caution with:

• Caffeine or stimulants

• Fat burners

• Diabetes medications or GLP-1 agonists

• Thyroid replacement medications

Combining with stimulants may increase:

• Jitteriness

• Elevated heart rate

• Overstimulation

Contraindications

Do not use if:

• Pregnant or breastfeeding

• Severe cardiovascular disease

• Heart arrhythmias

• Uncontrolled hypertension

• Anxiety or panic disorders

• Epilepsy/seizure disorders

L-Carnitine Dosing Protocol

General Guidelines

• Cycle length: 8 weeks

• Washout: 4 to 8 weeks

• Intramuscular injection preferred

• Best taken in the morning or pre-cardio

• Split doses may improve absorption

Timing

Fasted Use

• Supports increased fat utilization

With Carbohydrates

• May improve muscle uptake, endurance, and recovery

Standard Protocol

Fat Loss / Performance

• 100 units (600mg)

• 1 to 3 times weekly

Maximum Protocol

• 100 to 200 units (600 to 1200mg)

• 3 to 5 times weekly