Medications are prescribed abundantly throughout the United States every day. Just go into any pharmacy and you can see how busy the are as they fill prescriptions as fast as they can. Here's a list of the top ten prescribed drugs in the U.S. How many of these do are you taking?

1. Vicodin (hydrocodone/acetaminophen)

Vicodin is a popular drug for treating acute or chronic moderate to moderately severe pain. Its most common side effects are lightheadedness, dizziness, sedation, nausea, and vomiting. Vicodin can reduce breathing, impair thinking, reduce physical abilities, and is habit forming.

2. Simvastatin (Generic for Zocor)

Simvastatin is one of the first "statins" (HMG-CoA reductase inhibitors) approved for treating high cholesterol and reducing the risk of stroke, death from heart disease, and risk of heart attacks. Its most common side effects are headache, nausea, vomiting, diarrhea, abdominal pain, and muscle pain. Like other statins it can cause muscle break down.

3. Lisinopril (Generic for Prinivil or Zestril)

Lisinopril is an angiotensin converting enzyme (ACE) inhibitor used for treating high blood pressure, congestive heart failure, and for preventing kidney failure caused by high blood pressure and diabetes. Lisinopril side effects include dizziness, nausea, headaches, drowsiness, and sexual dysfunction. ACE inhibitors may cause a dry cough that resolves when the drug is discontinued.

4. Levothyroxine (generic for Synthroid)

Levothryoxine is a man-made version of thyroid hormone. It is used for treating hypothyroidism. Its side effects are usually result from high levels of thyroid hormone. Excessive thyroid hormone can cause chest pain, increased heart rate, excessive sweating, heat intolerance, nervousness, headache, and weight loss.

5. Azithromycin (generic for Zithromax, Z-PAK)

Azithromycin is an antibiotic used for treating ear, throat, and sinus infections as well as pneumonia, bronchitis, and some sexually transmitted diseases. Its common side effects include loose stools, nausea, stomach pain, and vomiting. Rare side effects include abnormal liver tests, allergic reactions, nervousness, and abnormal heart beats.