Is it ok to take jetepar detoxicating agent for liver as a cleansing agent. can it be effective against fatty liver?

No: There are no bona fide "detoxification agents" The quack cures are only likely to make matters worse. You should consult your doctor to ascertain that you have fatty liver and if you do, seek advice from the doctor, which is likely to include weight loss, For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex.