dapsone topical vs phenytoin
Side-by-side comparison of dapsone topical and phenytoin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
moderate Known Drug Interaction
7.4 Concomitant Use with Drugs that Induce Methemoglobinemia Concomitant use of ACZONE Gel, 7.5% with drugs that induce methemoglobinemia such as sulfonamides, acetaminophen, acetanilide, aniline dyes, benzocaine, chloroquine, dapsone, naphthalene, nitrates and nitrites, nitrofurantoin, nitroglycerin, nitroprusside, pamaquine, para‐aminosalicylic acid, phenacetin, phenobarbital, phenytoin, primaquine, and quinine may increase the risk for developing methemoglobinemia [see Warnings and Precautions ( 5.1 )] .
Recommendation: Your doctor may need to monitor your blood levels or check for signs of oxygen loss while you are using both medications.
Aczone
Dilantin
Aczone Gel is a topical medicine used to treat acne. It helps reduce inflammation and kill bacteria that cause acne.
Phenytoin injection is used to treat certain types of seizures. It can also prevent seizures during or after neurosurgery.
Aczone Gel is used to treat acne in people ages 9 and older. It helps to clear up pimples and prevent new ones from forming. Use it as directed by your doctor.
This medicine treats generalized tonic-clonic status epilepticus, a type of prolonged seizure. It also helps prevent and treat seizures that may happen during or after brain surgery. Sometimes, it can be used for a short time instead of the oral form of phenytoin when you cannot take the medicine by mouth.
Aczone Gel contains dapsone, which is a type of anti-inflammatory medicine. It works by reducing swelling and redness. It also kills certain bacteria that can cause acne.
Phenytoin works by slowing down the signals in the brain that cause seizures. It stabilizes nerve cell membranes, reducing excessive electrical activity. This helps to prevent seizures from starting or spreading.
- • Dryness where you put the gel
- • Itching where you put the gel
No common side effects listed.
No adverse event reports.
- The medicine is reacting with another medicine 1,547
- Seizure 1,382
- Poisoning from different substances 1,353
- Convulsion 1,260
- Prolonged seizure 790
Aczone Gel can cause a rare but serious condition called methemoglobinemia. If your skin turns bluish or grey, stop using Aczone Gel and get medical help right away. If you have a G6PD deficiency, talk to your doctor before using this medicine. It may cause blood problems.
This medicine can cause serious heart problems if given too quickly. The injection rate should not be faster than 50 mg per minute for adults, and 1 to 3 mg/kg/min (or 50 mg per minute, whichever is slower) for children. Your heart will be monitored closely during and after the injection.
It is not known if Aczone Gel can harm an unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if Aczone Gel passes into breast milk. Talk to your doctor before breastfeeding.
Taking phenytoin during pregnancy may increase the risk of birth defects. If you are pregnant or plan to become pregnant, talk to your doctor about the risks and benefits of this medicine.
How to Read This dapsone topical vs phenytoin Comparison
dapsone topical is classified in the Topical Anti-Inflammatory drug class, while phenytoin sits within the Anticonvulsant (Hydantoin) class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, dapsone topical has 0 submissions while phenytoin has 6,332. 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 moderate interaction flagged in FDA labeling, attributed to both medications can cause a blood issue where your body's tissues do not get enough oxygen. using them together increases the chance of this side effect occurring.. 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 dapsone topical and phenytoin - 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.