The Web Health



Generic Name: Bifidobacterium and lactobacillus [BIF-eye-doe-bak-TEER-ee-um-and-LAK-toe-ba-SIL-us]
Brand Names include Controlled Delivery Probiotic, Florajen3, Nature’s Bounty Probiotic, Phillips Colon Health, Primadophilus Bifidus,… Show the nine brands
Drug Class: Probiotics

What is Zelac?

Zelac is a medicinal food that is used as a probiotic, also known as "friendly bacteria," to maintain an optimal digestion tract (stomach and intestines). It can also aid in maintaining healthy vaginal bacteria.Zelac is prescribed to patients suffering from IBS, ulcerative colitis, or a pouch in the ileal area. Zelac is also used by women to improve vaginal health.

There are a few uses for Zelac that have been approved by the FDA. It is not to be used to replace medications prescribed by your physician.Zelac could also be used to accomplish purposes that are not covered in this product's guidelines.

Side effects of Zelac

See a doctor immediately. If you are experiencing symptoms that are warning signs of a reaction, such as difficulty breathing, hives, and swelling of your lips, face, and throat,

Common negative side effects of Zelac could include:

  • Stomach bloating or pain.

This is not a comprehensive list of all the side effects. Other side effects could occur. Consult your physician to seek medical advice on the effects. You can report any side effects to the FDA at 1-800-FDA-1088.


Don't apply this product without medical guidance. Follow the directions on the label and on the packaging. Be sure to inform your health care providers about your allergies, medical conditions, and any other medications you take.

Before you take this drug

Before taking Zelac, discuss its use with your doctor. You might not be able to take the medicine if you suffer from particular medical conditions.

Zelac is available as tablets, capsules, powder, and tablets that can be chewed. Don't mix different formulations at once without medical guidance.

Consult a pharmacist, doctor, or other healthcare professional to determine whether it is safe to take this medication when you are:

  • Dairy allergies, lactose intolerance,
  • If you're on any antibiotic medication.

Talk to your doctor before taking Zelac when you're breastfeeding or pregnant.Don't give herbal or health supplements to your child without a medical recommendation.

How to take Zelac?

Use only as indicated on the label or as recommended by your physician.Examine the label of your product to determine if you need to use it without or with food.It is important to chew the tablet before taking it.

Mix the powder with a chilled non-carbonated beverage (or soft food) (applesauce, yogurt, or ice cream) and eat the mix immediately. Do not store the powder to use later.Contact your doctor if symptoms don't improve or if they get worse after taking Zelac.

Keep your medication in a safe place away from heat, moisture, and light. It may be necessary to store your medication in an airtight container in a refrigerator. The effects of humidity or heat can affect the live bacteria present in the product and make it less efficient.

What happens If I miss a dose?

Don't miss the dose you missed, and take your next dose at the normal time. Don't take two doses at once.

What happens if I overdose?

For medical emergencies, seek emergency medical attention or contact the Poison Help line toll-free at 1-800-222-1222.

What should be avoided?

Avoid mixing the powder for oral use with hot drinks or food.

Interaction with other drugs

Other drugs can interact with Zelac, such as medications that are prescribed and available over the counter, vitamins, and herbal products. Discuss with your doctor your current medications as well as any medications you are about to start or stop taking.