Ferplex oral solution: each vial is 15 mL. It contains 40 mg elemental iron per vial.

It is an oral iron medicine, not an injection. Use the number of vials per day only as prescribed, especially for children, pregnancy, or anemia. The manufacturer information lists adults as commonly 1 to 2 vials daily, depending on medical advice.

Do not replace it based only on mL, because the iron salt and elemental-iron amount differ.

If your Fercee Iron Tonic label says elemental iron 32.8 mg per 5 mL, then:

But please confirm the exact product label first. Some Fercee versions, such as Fercee XT, contain 30 mg elemental iron per 5 mL, and then 40 mg is about 6.7 mL. The prescription may also be intended to provide folic acid or to treat confirmed anemia, not merely routine pregnancy supplementation.

For a woman at 5 months' pregnancy, iron and folic acid are commonly used, but the dose should be based on her hemoglobin, ferritin if available, side effects, and her obstetrician's plan. Routine pregnancy supplements commonly provide 30 to 60 mg elemental iron daily, while diagnosed anemia can require a different regimen. Recent systematic review evidence supports daily oral iron supplementation in pregnancy (Cochrane review, PMID 39145520).

Best next step: send a photo or type exactly what Fercee says under “composition” or “each 5 mL contains.” I can calculate the matching mL precisely. Do not take both Ferplex and Fercee together unless her clinician has told her to.

This confirms it is Fercee Iron Tonic by Alkem, containing ferric ammonium citrate, folic acid, and vitamin B12.

The front does not show the strength per 5 mL, so I cannot safely calculate the replacement dose yet. Please send a clear photo of the back or side panel where it says:

Then I can tell you the matching amount in mL compared with one Ferplex 15 mL vial.

I checked the manufacturer listing for Fercee Syrup 200 mL. It contains, per 15 mL:

This is the same Fercee type shown in your photo. Alkem’s product listing confirms the strength.

To replace one Ferplex vial (40 mg iron), the mathematically similar Fercee dose is:

18 mL Fercee once daily
(about 3½ teaspoons, using a proper measuring cup/syringe, not a kitchen spoon)

However, for routine supplementation at 5 months of pregnancy, 15 mL once daily provides 32.8 mg elemental iron, which is close to the common minimum daily pregnancy iron amount of 30 mg. This is often reasonable if the Ferplex was prescribed only as routine supplementation, not for significant anemia.

If she was prescribed 2 Ferplex vials per day because her hemoglobin is low, do not simply substitute without her obstetrician confirming it. The equivalent would be about 36 mL Fercee daily, but a clinician should decide treatment dosing and repeat hemoglobin, sometimes ferritin. Anemia in pregnancy is generally assessed when Hb is below 11 g/dL, and iron needs differ between prevention and treatment.

Do not take Ferplex and Fercee together. Take Fercee away from tea, coffee, milk, calcium tablets, and antacids by about 2 hours, since they can reduce iron absorption. Dark stools and mild constipation can occur.