How can you tell when a health product advertised on tv, the internet, or elsewhere is questionable?

What pharmacological agent serves to reduce the frequency and severity of seizures?

Felicia has a respiratory infection and has been coughing up a lot of mucus. she knows this means that her respiratory system is working to restore balance by getting rid of the invasive materials from her lungs. how does this happen?

Blank is the growth of adnormal cells in the tissues of the body