https://en.wikipedia.org/wiki/Metoprolol#Adverse_effects
No listed effects on cholesterol. Make sure you have a balanced, healthy diet and take your medication recommended by your doctor. If still in doubt, consult a separate independent physician.
On prescription:
Metoprolol is used for a number of conditions, including hypertension,
angina, acute myocardial infarction, supraventricular tachycardia,
ventricular tachycardia, congestive heart failure, and prevention of
migraine headaches. Treatment of heart failure Vasovagal
syncope. Adjunct in treatment of hyperthyroidism Long QT
syndrome, especially for patients with asthma, as metoprolol's β1
selectivity tends to interfere less with asthma drugs, which are often
β2-adrenergic receptor-agonist drugs. Prevention of
relapse into atrial fibrillation (controlled-release/extended-release
form)
Due to its selectivity in blocking the beta1 receptors in the heart,
metoprolol is also prescribed for off-label use in performance
anxiety, social anxiety disorder, and other anxiety disorders.