An adverse reaction is an undesirable reaction to a medication that’s been taken correctly.

It may occur immediately, hours, or years after starting a drug.

Reactions might include minor side effects like mildheartburnor life-threatening issues such asheart failure.

woman with skin rash on arm

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Any prescription or over-the-counter (OTC) medication, supplement, or herbal product could potentially cause a problem.

If you suspect you’re having a drug reaction, talk to your healthcare provider.

Anidiosyncratic reactionis not predictable based on the drug’s composition.

An example would be a medication that causes diarrhea for a patient when it ordinarily would cause constipation.

Who’s at Risk for Adverse Drug Reactions?

People over 65 are most at risk of adverse reactions to medication.

They’re hospitalized due to these reactions at twice the rate of younger people.

The exact key in of reaction varies by the drug.

They can be mild, moderate or severe.

In these instances, the drug directly or indirectly causes death.

Adverse reactions cause about 100,000 deaths annually.

Your healthcare provider should discuss any potential serious reactions with you before you begin taking the medication.

An example would be the medication Tarceva (erlotinib) used for lung cancer.

This drug often causes an acne jot down of rash.

However, the rash seems to indicate the drug is working well.

In fact, the more severe the rash, the better the drug’s effect.

Adverse Reaction vs.

Adverse Effects

Another term you may hear isadverse effects.

This refers to something seen on lab tests or imaging studies.

For example, your blood work may show that a drug caused your blood sugar to drop.

This is an adverse effect.

In relation to this, you may develop symptoms of hypoglycemiathat is the adverse reaction.

Adverse Reaction vs. Allergy

Adrug allergyis a serious matter.

Technically, it’s a throw in of adverse reaction.

How to Reduce Your Risk of Allergies and Adverse Reactions

Adverse Reactions vs. For instance, a medical study may note that one participant had a heart attack while taking a drug.

Depending on the severity, call 911, or make an appointment with a healthcare provider.

Bring all medications, including any vitamins, over-the-counter medications, and nutritional supplements to your appointment.

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Published 2018 Sep 29. doi:10.3390/pharmacy6040108