Robitussin-AC is not an over-the-counter medication; it is available only by prescription. Robitussin-AC is also known by its generic name, which is codeine and quaifenesin, according to More »

The primary difference in over-the-counter pain relievers, such as Tylenol, Advil and Aleve, and prescription pain killers is the amount of active medication contained in each pill, says Advil, for examp... More » Health Medications & Vitamins

According to MedlinePlus, nystatin is available only with a doctor's prescription. The medication is helpful for treating fungal infections of the skin, mouth, vagina and intestinal tract. More »

According to, Cheratussin AC is a prescription cough syrup containing the cough suppressant codeine and the expectorant guaifenesin. These two ingredients combined are effective for controlling the symptoms of ... More »

In order to kill mites and eggs associated with scabies, scabicides, which are by prescription only, are the treatment options used by healthcare professionals, relates the American Academy of Dermatology. For this reaso... More »

In the United States, anti-malarial pills are only available with a doctor's prescription. This is for safety reasons, as taking the wrong type of malaria medication before being exposed to the parasite not only does not... More » Health Medications & Vitamins

As of 2015, antibiotics are only available by prescription from a health care professional, as stated by the Centers for Disease Control and Prevention. Antibiotics cannot treat viral infections, such as those associated... More » Health Medications & Vitamins