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ranitidine vs valproate

Side-by-side comparison of ranitidine and valproate. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

major Known Drug Interaction

Cimetidine and Ranitidine Cimetidine and ranitidine do not affect the clearance of valproate.

Recommendation: These medications can be taken together as prescribed. No dosage adjustments are usually necessary.

Drug Class
ranitidine H2 Receptor Antagonist
valproate Anticonvulsant / Mood Stabilizer
Type
ranitidine Over-the-Counter
valproate Prescription
Summary
ranitidine

Ranitidine (Zantac) helps reduce stomach acid. It can relieve heartburn and sour stomach.

valproate

Valproate sodium injection is used when you cannot take valproate pills. It helps control seizures.

What It Treats
ranitidine

This medicine treats heartburn caused by acid indigestion and sour stomach. You can also take it to prevent heartburn. It can prevent heartburn caused by eating or drinking certain foods and drinks.

valproate

This medicine treats certain types of seizures. It can be used alone or with other medicines to treat complex partial seizures. It also treats simple and complex absence seizures, and multiple seizure types that include absence seizures.

How It Works
ranitidine

Ranitidine is an H2 receptor antagonist. It works by blocking histamine. Blocking histamine reduces the amount of acid your stomach makes.

valproate

Valproate affects the levels of certain chemicals in your brain. These chemicals help to control seizures. This medicine helps to reduce the frequency of seizures.

Common Side Effects
ranitidine
  • Headache
valproate
  • Headache
  • Dizziness
  • Nausea
  • Pain at the injection site
FAERS Reports
ranitidine
  • Breast cancer 24,853
  • Prostate cancer 22,252
  • Colon and rectal cancer 17,674
  • Bladder cancer 16,746
  • Kidney cancer 16,278
valproate
  • The medicine is interacting with another medicine 1,187
  • The baby was exposed to the medicine during pregnancy 1,043
  • Sleepiness 951
  • Seizures 813
  • Harmful effects from different substances 757
Serious Warnings
ranitidine

No specific warnings noted.

valproate

Valproate can cause life-threatening liver problems, especially in the first 6 months of treatment. Children under 2 and people with mitochondrial disorders have a higher risk. Valproate can also harm an unborn baby, causing birth defects and lower IQ. It can also cause pancreatitis, which can be fatal.

Pregnancy
ranitidine

No pregnancy information available.

valproate

Valproate can cause serious birth defects if taken during pregnancy. Do not take this medicine if you are pregnant or plan to become pregnant unless other medicines don't work for you. There is a pregnancy registry for women who take valproate during pregnancy; call 1-888-233-2334 to enroll.

Also Compare, Nearby Drugs

How to Read This ranitidine vs valproate Comparison

ranitidine is classified in the H2 Receptor Antagonist drug class, while valproate sits within the Anticonvulsant / Mood Stabilizer class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are split between OTC and prescription status, which affects access and supervision.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, ranitidine has 97,803 submissions while valproate has 4,751. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known major interaction flagged in FDA labeling, attributed to ranitidine does not change how the body processes or removes valproate from your system. there is no known interaction between these two drugs based on the provided information.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between ranitidine and valproate - always consult your physician or pharmacist first.

Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.