Common Side Effects

• There is only one really common and unpleasant side effect of Benicar. That side effect is that of dizziness. In general, the dizziness subsides quickly (as the body adapts to the medication). However, if you are feeling dizzy and it just keeps getting worse or is particularly persistent, you need to inform your doctor of the matter.
  
  

Serious Side Effects

• Various different serious side effects could occur from taking Benicar. Serious side effects can be harmful, so it is very important to get emergency medical attention if you experience any of them. These potentially dangerous side effects of Benicar include having a hard time swallowing, decreased or increased amounts of urine, slow, rapid, or irregular heartbeat, chest ache, muscle cramps or pains, and signs of low blood pressure (like feeling lightheaded, passing out, and extreme dizziness).
  
  

Allergic Reactions

• Serious allergic reactions can occasionally occur due to Benicar. These allergic reactions can be severe, so it is crucial to seek medical assistance if you have any of them. Some signs to look out for include hoarseness, swelling of the lips, mouth, tongue, or face, chest heaviness or tightness, skin rash, itching, and hives.
  
  

Uncommon Side Effects

• There are a handful of very uncommon bad side effects of the medication. If you experience any rare effects of the medication, you need to get emergency medical assistance. These uncommon effects are a condition that involves severe muscle breakdown (known as rhabdomyolysis), vertigo, indigestion, heartburn, hair loss, and high cholesterol.
  
  

Overdose

• If you are worried that you might have taken more than the appropriate amount of this medication, you need to get emergency medical care as soon as possible, because you might have overdosed. Overdosing on Benicar can cause some potentially bad consequences. Some effects of Benicar overdose are dizziness, slow or rapid heartbeat, and feeling like you might faint.