Cefdinir antibiotic indication is effective when somebody has an infection caused by bacteria but is helpless if a person has a viral or fungal infection.

Like any other antibiotic, it can cause adverse effects. One possible effect of the drug is an allergic reaction to its components. There are no concrete reasons why a person can have an allergy to antibacterial drugs. Still, there are factors which can make antibiotic usage risky. These are:

  • Pathology (HIV, mononucleosis, gout, lymphatic leukemia, cytomegalovirus, etc.)
  • Allergy to other things (food, pollen of plants, dust, other drugs, etc.)
  • Genetic predisposition

Possible Severe Allergic Reactions

Scientists studied Omnicef and allergic reactions to find out that there are 5 most severe reactions.

Anaphylactic reaction (shock)

It occurs almost immediately after taking the drug (maximum after 30 minutes) and is manifested by a sharp rise in blood pressure, difficulty in breathing due to laryngeal edema, heart failure, itching and flushing on the skin, and the presence of a rash.

Omnicef and allergic reactionsSerum-like syndrome

It develops like serum sickness in 1-3 weeks after taking the medicine. It is manifested by pain in the joints, high fever, an increase of lymph nodes and rashes on the skin.

Drug fever

Allergy to antibacterial substances can be manifested by increasing of a body temperature, both during the drug intake and after its withdrawal. Usually, it occurs a week after taking the medication and passes independently 2-3 days after cancellation. The temperature rises very quickly reaching 40 ┬░ C. At the same time, there is no increase in heart rate, which happens with a normal fever.

Lyell’s syndrome or toxic epidermal necrolysis

It occurs extremely rarely and is characterized by the formation of large bubbles filled with liquid on the reddened skin. After they burst, the skin is removed by layers, exposing huge wound surfaces, which die and become infected.

Syndrome of Stevens-Johnson

It is characterized by skin rashes, inflammation of mucous membranes and high temperature.

Other Less Serious Side Reactions

Allergy to Omnicef is not always severe. As a rule, they are characterized by local skin reactions.


It is characterized by the appearance on the skin of spots of red color, which can merge into one large. They itch and cause a temperature higher than of the surrounding normal skin.

Edema of Quincke

There is swelling of this or that part of the body of the patient (larynx, labia, scrotum, etc.), a feeling of spreading, itching, redness.

Rashes on the skin

Elements of the eruption can be of various sizes and can be located both throughout the body and in limited areas (hands, abdomen, back, face).


The skin becomes red and starts itching on open areas of the body, exposed to sunlight. Vesicles or bullae filled with a clear liquid may come into sight.

Treatment of the Allergy to Omnicef

There are several possible allergy treatments:

  • Cancellation of the obtained antibiotic and its replacement with drugs from another group
  • Medications
  • Desensitization

Drug Treatment for Allergies to Omnicef

A patient is prescribed antihistamines in the form of tablets and ointments in case of local, skin symptoms.

Enterosorbents are also effective because they help to remove the antibiotic from the body.

Hormonal agents are prescribed in dosages corresponding to the weight of the patient and the severity of the course of the disease when there are more serious changes.

Adrenaline can be prescribed in case of anaphylaxis.