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Lamictal vs. Zyprexa

Head-to-head comparisons of medication uses, side effects, warnings, and more.

Key takeaways

Lamotrigine (Lamictal) and Olanzapine (Zyprexa) are both prescription medications, but they are used for different conditions and belong to different drug classes. Lamotrigine is an antiepileptic used to treat seizures and bipolar disorder, while Olanzapine is an atypical antipsychotic used to treat schizophrenia, bipolar disorder, and certain types of depression when combined with fluoxetine (Prozac). Lamotrigine is available in various forms, including chewable tablets and extended-release tablets, and it requires a gradual dose increase to avoid serious skin reactions. On the other hand, Olanzapine is typically taken once daily and can cause dose -ependent weight gain and sleepiness. Both medications can cause serious side effects, but they differ in their specific risks and the conditions they treat. Both medications are available as generics.

Lamotrigine

(Lamictal)

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Olanzapine

(Zyprexa)

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Summary for Lamictal

Prescription only

Lamotrigine (Lamictal) is an antiepileptic medication. The immediate-release version can treat different types of seizures as well as bipolar 1 disorder. But the extended-release version is only for seizures. Your dose depends on your age, the other medications you take, and what problem you're treating. Side effects can include dizziness, headache, and serious skin reactions. It can also cause withdrawal symptoms like seizures if you stop taking it suddenly.

Indications for Lamictal

Pros and Cons for Lamictal

Pros

  • Available in different formulations (regular immediate-release tablets, chewable tablets, quick-dissolving tablets, and extended-release tablets)
  • Can use a starter kit to help with dosing when you first start the medication
  • Approved for children of certain ages with seizures (age depends on formulation)

Cons

Common Side Effects for Lamictal

Immediate release:

  • Dizziness (38%)
  • Headache (29%)
  • Double vision (28%)
  • Problems with coordination (22%)
  • Nausea (19%)
  • Blurry vision (16%)
  • Sleepiness (14%)
  • Runny or stuffy nose (14%)
  • Sore throat (10%)
  • Rash (10%)

Extended release:

  • Dizziness (14%)
  • Nausea (7%)
  • Vomiting (6%)
  • Tremor (6%)
  • Feeling tired (6%)
  • Double vision (5%)
  • Diarrhea (5%)

Warnings for Lamictal

  • Serious skin rashes
  • Serious allergic reaction
  • Overactive immune response to the medication
  • Irregular heartbeat
  • Risk of suicidal thoughts and behavior
  • Meningitis (inflammation in the brain)
  • Withdrawal seizures
  • Possible eye problems
  • Interactions with other medications

Summary for Zyprexa

Prescription only

Olanzapine (Zyprexa) is an atypical antipsychotic used treat schizophrenia or bipolar disorder. It can also treat depression, in combination with fluoxetine (Prozac), when other treatments haven't worked well. This medication is thought to work by balancing the levels of certain chemicals in the brain. Olanzapine (Zyprexa) is taken by mouth, typically once daily, by adults and children. Olanzapine (Zyprexa) is also available as an injection that's usually given in a hospital or clinic setting. Some of the more common side effects of olanzapine (Zyprexa) include sleep problems, dizziness, and weight gain.

Indications for Zyprexa

When taken with fluoxetine (Prozac):

  • Bipolar depression in adults and children age 10 years and older
  • Depression that hasn't responded well to other treatments

Pros and Cons for Zyprexa

Pros

  • Taken by mouth
  • Taken once daily
  • Might notice an improvement in your symptoms in as early as a week of starting olanzapine (Zyprexa)
  • Available as a lower-cost generic

Cons

  • Can cause anticholinergic side effects, such as constipation and dry mouth
  • Can affect your sleep
  • More likely to cause weight gain, high blood cholesterol, and high blood sugar levels compared to some other atypical antipsychotics

Common Side Effects for Zyprexa

  • Sleepiness (29%)
  • Trouble sleeping (12%)
  • Accidental injury (12%)
  • Dizziness (11%)
  • Weakness (10%)
  • Dry mouth (9%)
  • Constipation (9%)
  • Upset stomach (7%)
  • Runny nose (7%)

Warnings for Zyprexa

  • Higher risk of death in older people with dementia-related psychosis
  • Worsening depression, suicidal thoughts and behavior
  • Severe allergic skin reactions
  • Neuroleptic malignant syndrome
  • Weight gain, higher blood sugar, and higher cholesterol levels
  • Difficulty controlling body movements
  • Changes in blood pressure and higher risk of falls
  • Risk of infection (from low white blood cell count)
  • Seizures
  • High prolactin levels
  • Difficulty concentrating and extreme sleepiness
  • Anticholinergic side effects

Prices with our coupons for Lamictal vs. Zyprexa

Price Card Drug Icon
Lamotrigine30 tablets / 100mg
$9.00$9.00
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Price Card Drug Icon
Olanzapine30 tablets / 5mg
$12.26$81.17
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