metformin/pioglitazone vs phenytoin
PlainMeds reviewed this comparison against our methodology in August 2026. It places FDA and CMS record fields side by side, without recommending either medication.
Side-by-side comparison of metformin/pioglitazone and phenytoin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
These drugs include the thiazides and other diuretics, corticosteroids, phenothiazines, thyroid products, estrogens, oral contraceptives, phenytoin, nicotinic acid, sympathomimetics, calcium channel blockers, and isoniazid.
Actoplus Met
Dilantin
Actoplus Met is a drug that combines two medicines to help control blood sugar in adults with type 2 diabetes. It should be used with diet and exercise.
Phenytoin injection is used to treat certain types of seizures. It can also prevent seizures during or after neurosurgery.
Actoplus Met helps lower blood sugar in adults who have type 2 diabetes. You should also follow a diet and exercise plan while taking this medicine. Actoplus Met is not for people with type 1 diabetes or diabetic ketoacidosis.
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.
Actoplus Met contains pioglitazone and metformin. Pioglitazone makes your body more sensitive to insulin. Metformin reduces the amount of sugar your liver releases into your blood.
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.
- • Upper respiratory infection
- • Swelling
- • Diarrhea
- • Headache
- • Weight gain
No common side effects listed.
- Feeling sick to your stomach 21,946
- Loose or watery stools 21,887
- High blood sugar 18,329
- Feeling tired 17,252
- Sudden kidney damage 16,440
- Drug Interaction 1,547
- Seizure 1,382
- Toxicity To Various Agents 1,353
- Convulsion 1,262
- Status Epilepticus 791
Actoplus Met can cause or worsen heart failure in some people. Watch for signs like rapid weight gain, shortness of breath, and swelling. This medicine can also cause a rare but serious condition called lactic acidosis. Get medical help right away if you have symptoms like feeling very weak, muscle pain, trouble breathing, or stomach pain.
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.
Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if Actoplus Met will harm your unborn baby. Talk to your doctor if you are breastfeeding or plan to breastfeed.
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 metformin/pioglitazone vs phenytoin Comparison
metformin/pioglitazone is classified in the Biguanide / TZD Combination 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, metformin/pioglitazone has 95,854 submissions while phenytoin has 6,335. 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 minor interaction flagged in FDA labeling, attributed to phenytoin can make it harder for your body to manage blood sugar levels, which may cause your diabetes treatment to be less effective.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for metformin/pioglitazone or phenytoin.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.