How does RB Fest Tablet work?

RB Fest Tablet is a nutritional supplement that consists of Ferrous Ascorbate, Folic acid, and Zinc. It works by restoring iron levels and boosting the body's production of red blood cells (RBC), thus treating iron deficiency anaemia.

Can I take RB Fest Tablet along with tea or milk?

It is recommended not to take RB Fest Tablet along with tea, coffee, milk, and eggs since they might interfere with iron absorption from RB Fest Tablet .

What is the best time to take RB Fest Tablet ?

RB Fest Tablet is best absorbed if taken on an empty stomach. But in some patients, RB Fest Tablet may cause gastrointestinal disturbances like stomach upset or constipation when taken without food. So, please take it as suggested by your doctor if you have stomach problems.

Can I take antacids while using RB Fest Tablet ?

Antacids may interfere with the absorption of iron. Hence, taking RB Fest Tablet two hours before or four hours after taking antacids is advised.

Can I take RB Fest Tablet with antibiotics?

Zinc may decrease the absorption of antibiotics, thereby reducing their effectiveness. Maintaining at least an hour gap between RB Fest Tablet and other antibiotics is advised.

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RB Fest Tablet 10's

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Therapeutic Class

NUTRITIONAL SUPPLEMENT

Author Details

Written By

Bayyarapu Mahesh Kumar

M Pharmacy

Reviewed By

Dr Aneela Siddabathuni

MPharma., PhD

Last Updated

Jul 8, 2025 | 9:50 AM IST

We provide you with authentic, trustworthy and relevant information

Drug-Drug Interactions Checker List

CIPROFLOXACIN
CEPHALEXIN
PENICILLAMINE
PHENYTOIN
PHENOBARBITAL
CISPLATIN
RITONAVIR

Drug-Drug Interactions

Folic acidTrimethoprim

Severe

Folic acidColestyramine

Severe

Drug-Drug Interactions

Folic acidTrimethoprim

Severe

How does the drug interact with RB Fest Tablet:
Trimethoprim may decrease the blood levels and effects of RB Fest Tablet.

How to manage the interaction:
Although there is a possible interaction between RB Fest Tablet and Trimethoprim, you can take these medicines together if prescribed by your doctor. Do not stop using any medications without consulting your doctor.

Folic acidColestyramine

Severe

How does the drug interact with RB Fest Tablet:
Coadministration of RB Fest Tablet and Cholestyramine may interfere with the absorption of RB Fest Tablet.

How to manage the interaction:
Although taking Cholestyramine and RB Fest Tablet together can result in an interaction, they can be taken together if prescribed by a doctor. However, if you experience Constipation, Diarrhea, Stomach pain, Nausea, or Loss of appetite, consult a doctor. Do not stop using any medications without consulting a doctor.

Folic acidCarbamazepine

Severe

How does the drug interact with RB Fest Tablet:
Coadministration of RB Fest Tablet and Carbamazepine may reduce the blood levels of RB Fest Tablet.

How to manage the interaction:
Although there is a possible interaction between RB Fest Tablet and Carbamazepine, you can take these medicines together if prescribed by your doctor. However, if your condition changes or you experience loss of seizure control, contact your doctor.

Folic acidFluorouracil

Severe

How does the drug interact with RB Fest Tablet:
Coadministration of RB Fest Tablet and Fluorouracil may increase the effects of Fluorouracil and increase the risk of serious side effects such as bleeding problems, anaemia (lack of blood), infections, and nerve damage.

How to manage the interaction:
Although there is a possible interaction between RB Fest Tablet and Fluorouracil, you can take these medicines together if prescribed by your doctor. However, if you experience diarrhoea, paleness of skin, severe nausea and vomiting, over-tiredness, dizziness, fainting, blood in the stools, unusual bleeding or bruising, fever, chills, body pains, flu-like symptoms, skin reactions, mouth ulcers or sores, and/or numbness, burning or tingling in your hands and feet, contact your doctor.

Folic acidCapecitabine

Severe

How does the drug interact with RB Fest Tablet:
Co-administration of RB Fest Tablet with Capecitabine may increase the risk of serious side effects such as bleeding problems, anemia, infections, and nerve damage.

How to manage the interaction:
Although there is a possible interaction between RB Fest Tablet and Capecitabine, you can use these medicines together if prescribed by the doctor. However, if you experience paleness of skin, diarrhea, severe nausea and vomiting, over-tiredness, dizziness, fainting, blood in the stools, unusual bleeding or bruising, fever, chills, body aches, flu-like symptoms, skin reactions, mouth ulcers or sores, and/or numbness, burning or tingling sensation in the hands and feet, contact a doctor. Do not discontinue the medication without consulting a doctor. Do not discontinue the medication without consulting a doctor.

Folic acidSulfadiazine

Severe

How does the drug interact with RB Fest Tablet:
Sulfadiazine may decrease the blood levels and effects of RB Fest Tablet.

How to manage the interaction:
Although there is a possible interaction between RB Fest Tablet and Sulfadiazine, you can take these medicines together if prescribed by your doctor.

Zinc sulfateDolutegravir

Severe

How does the drug interact with RB Fest Tablet:
Coadministration of dolutegravir with RB Fest Tablet can reduce the efficacy of dolutegravir.

How to manage the interaction:
Although taking Dolutegravir and RB Fest Tablet together can possibly result in an interaction, they can be taken together if prescribed by your doctor. It is advised to take dolutegravir either two hours before or six hours after taking a dose of RB Fest Tablet. Do not discontinue using any medications without consulting a doctor.

Drug-Food Interactions

No Drug - Food interactions found in our database. Some may be unknown. Consult your doctor for what to avoid during medication.

Drug-Food Interactions

Drug-Diseases Interactions

No Drug - Disease interactions found in our database. Some may be unknown. Consult your doctor for what to avoid during medication.

Drug-Diseases Interactions

Drug Warnings

Brief your medical history to the doctor if you have any allergic reactions to medicines, heart/kidney/liver/ diseases, iron overload disorders like hemochromatosis, hemosiderosis, and intestinal problems (ulcer, colitis) before starting RB Fest Tablet . Pregnant women should consult their doctor before taking RB Fest Tablet . Iron is excreted into the breast milk; hence, consult your doctor before taking RB Fest Tablet if you are a breastfeeding mother. Drinking alcohol may affect iron absorption; therefore, it is advised to consult your doctor before using RB Fest Tablet . RB Fest Tablet should be used for children only when suggested by the doctor.

Side Effects of RB Fest Tablet

Nausea
Diarrhoea
Constipation
Stomach upset

Directions for Use

Tablet/Capsule: Swallow the tablet or capsule as a whole with a glass of water. You can take it with or without food at regular intervals, as suggested by the doctor. Do not crush, chew or break it.

Medicinal Benefits Mweb

Medicinal Benefits

RB Fest Tablet contains Ferrous Ascorbate, Folic Acid, and Zinc. Ferrous Ascorbate is a mineral that the body requires for red blood cells to transport oxygen to other cells and tissues. Iron, in combination with a protein in the blood called haemoglobin, aids in the transport of adequate oxygen to various body parts. Folic acid promotes the formation of red blood cells. It prevents and treats anaemia and folate deficiency. Zinc is a mineral that promotes the growth and development of body tissues.

Uses of RB Fest Tablet

Iron deficiency and anaemia.

About RB Fest Tablet

RB Fest Tablet belongs to a class of 'nutritional supplements' primarily used to treat iron deficiency and its associated anaemia. Iron deficiency anaemia is a condition in which the body does not have enough red blood cells due to low iron levels.

RB Fest Tablet contains Ferrous Ascorbate, Folic acid, and Zinc. Ferrous Ascorbate is an essential mineral that aids in producing red blood cells and transporting oxygen to body tissues. Folic acid helps form red blood cells and prevents and treats folate deficiency (low blood levels of folate). Zinc is a mineral that promotes the growth and development of body tissues.

Your doctor will decide the dosage based on your medical condition. In some cases, RB Fest Tablet may cause side effects like nausea, diarrhoea, constipation, and stomach upset. These side effects do not require medical attention and gradually resolve over time. However, if these side effects persist longer, please consult your doctor.

Brief your medical history to the doctor if you have any heart/kidney/liver diseases, iron overload disorders like hemochromatosis, hemosiderosis, and intestinal problems (ulcer, colitis) before starting RB Fest Tablet . It is essential to seek medical advice before starting RB Fest Tablet if you are pregnant or breastfeeding. Drinking alcohol may affect iron absorption; therefore, it is advised to consult your doctor before using RB Fest Tablet . RB Fest Tablet should be given to children only when advised by the doctor.