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**Common Side Effects (usually mild and temporary):** * Nausea * Vomiting * Diarrhea * Abdominal cramps or discomfort * Headache * Loss of appetite **Less Common or Rare Side Effects:** * Unusual or fishy body odor (due to L-Carnitine) * Heartburn * Difficulty sleeping (Insomnia) * Restlessness * Skin rash or itching * Allergic reactions (rare, but can include swelling of face/lips/tongue, severe dizziness, difficulty breathing seek immediate medical attention if these occur)

[sources 2] The primary metabolites are amphetamine and 4-hydroxymethamphetamine

The diagnosis and evaluation of dilated cardiomyopathy

That said, their active ingredients have been individually FDA-approved for the treatment of ED