Taking Gabapentin With Lipitor - Pharmacist Analysis
In our latest question and answer, our pharmacist discusses the combined use of gabapentin and Lipitor.
I take Lipitor every day for cholesterol. My pain doctor just prescribed me gabapentin. Are they safe to take together?
Apr 13, 2023- Gabapentin and Lipitor are generally safe to take together with no known interaction between them. These medications work through different mechanisms and do not affect each other's metabolism. Gabapentin and Lipitor do not share many similar side effects, so the risk of additive effects is unlikely.
Is There An Interaction?
There is no known interaction between gabapentin and Lipitor (atorvastatin). They are generally considered safe to take together.
Discussion From The Pharmacist
Lipitor and gabapentin have different mechanisms of action that are not known to interfere with one another.
Additionally, neither drug is known to affect the metabolism of the other.
Gabapentin is not metabolized by cytochrome P450 enzymes (it is cleared through the kidneys, with most of the drug being excreted unchanged in the urine), which are responsible for the metabolism of many other medications (including Lipitor). Gabapentin is not known to affect these enzymes, which means that gabapentin is unlikely to interact with other drugs that are metabolized by them.
Lipitor is metabolized via a cytochrome enzyme (CYP3A4), but again, gabapentin does not affect these enzymes.
It is important to note that there are some factors that can affect the metabolism of gabapentin.
For example, individuals with impaired renal function may have slower clearance of the drug, which can lead to higher levels of gabapentin in the body and an increased risk of side effects.
In addition, there is some evidence to suggest that certain medications, such as antacids, can reduce the absorption of gabapentin.
Likewise, there are certainly plenty of drugs that can affect Lipitor metabolism via alterations to CYP metabolizing enzymes. As discussed though, this isn't a concern with gabapentin.
What About Side Effects?
Gabapentin and Lipitor do not share many similar side effects, so the risk of additive effects occurring is unlikely.
Final Words
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References & sources
Glossary — Terms in This Answer
- Cytochrome P450 enzymes
- Proteins in your body that break down many medications so they can be eliminated from your system.
- Metabolism
- The chemical process by which your body breaks down and processes drugs and other substances.
- CYP3A4
- A specific type of enzyme in your body that is responsible for breaking down Lipitor and many other medications.
- Renal function
- How well your kidneys are working to filter waste and clear substances from your blood.
- Excretion
- The process by which your body removes unused or waste substances through urine, feces, or other means.
- Absorption
- The process by which a medication passes through your digestive system and enters your bloodstream.
- Additive effects
- When two drugs together produce a stronger combined effect than each would produce on its own.
- Mechanisms of action
- The specific ways that medications work in your body to produce their intended effects.
Dr. Brian Staiger, PharmD
Doctor of Pharmacy, board certified clinical pharmacist (BCPS), American Herbalist Guild, Medication Therapy Management certified
Brian Staiger, PharmD, BCPS, is a licensed pharmacist with more than 13 years of experience across retail pharmacy, clinical pharmacy, medication safety, pharmacy program development, and healthcare administration. He is the founder of HelloPharmacist.com, where he helps patients...
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