Cefdinir

• Bronchitis: 300mg every 12 hours for 5 to 10 days or 600mg once a day for 10 days
• Pneumonia: 300mg every 12 hours for 10 days
• Skin infection: 300mg every 12 hours for 10 days

It has been used for Lyme disease and for treating urinary tract infections, though it's not the first-line antibiotic for these conditions.

• Cefdinir dosing for children depends on the infection being treated, the child's weight, and the severity of their illness. Always follow the pediatrician's instructions.
• Like adults, kids might experience side effects like diarrhea and abdominal pain.  
• Prior to administering each dose, shake the bottle of suspension well. Use only the measuring device provided to ensure the correct dose.

• Have a known allergy to cephalosporin or penicillin antibiotics.
• Are diagnosed with PKU (phenylketonuria) and are prescribed the oral suspension (since it contains phenylalanine).
• Suffer from stomach or intestinal disease, like colitis.
• Are pregnant or breastfeeding (consult your doctor).

• Complete the full prescribed amount of medicine, even if your symptoms disappear after a few days.
• Take this medication with food to avoid stomach upset.
• Avoid antacids that contain aluminum or magnesium within 2 hours of taking cefdinir, they may reduce its effectiveness.
• If you're taking iron supplements or multivitamins with iron, you should take them at least two hours before or after the antibiotic as iron can affect absorption.
• Seek immediate medical attention in case of a severe skin reaction or serious allergic reaction.
• Lastly, maintain good oral and anal hygiene, since cefdinir may cause oral thrush or yeast infection in the rectal or vaginal area.

• You might experience diarrhea, nausea, or abdominal pain.
• You might develop a headache.
• You might notice a skin rash.
• You might feel vaginal itching or discharge.

• You might develop a fever or experience extreme fatigue or weakness. 
• You may notice changes in your urine or stools.
• If you see blood in your stools or vomit, opt for immediate medical attention.
• If you have a serious allergic reaction with symptoms such as a rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, or trouble breathing, get medical help right away.

• Allergic Reactions: In rare cases, Cefdinir may cause severe allergic reactions, possibly resulting in anaphylaxis. Signs of an allergic reaction include hives, difficulty breathing, or swelling of the face, lips, tongue, or throat. One must discontinue using Cefdinir immediately and seek emergency medical help if they experience these symptoms.
• Antacids or Iron Supplements Interaction: Taking antacids or iron supplements may reduce the effectiveness of Cefdinir. So, it is advised to take Cefdinir at least 2 hours before or after taking these medications.
• Kidney Disease: Cefdinir is eliminated from the body by the kidneys, so people with kidney disease may need to take a smaller dose to avoid accumulation and potential toxicity.
• Superinfections: Extended use of Cefdinir may result in the overgrowth of non-susceptible organisms, leading to secondary infections (known as superinfections), such as fungal infections in the mouth or vagina.
• False Positive in Urine Glucose Test: Cefdinir may cause a false-positive result in the urine glucose (sugar) test. Therefore, a different form of testing may be required while on this medication.
• Antidiarrheal Medication: If you develop diarrhea while taking Cefdinir, do not take anti-diarrhea products without the consultation of your healthcare provider, as certain drug-induced diarrheas may require specific treatment.
• Pregnancy & Breastfeeding: Although Cefdinir is classified as pregnancy Category B (meaning it's likely safe in pregnancy), pregnant or nursing mothers should use the medication only if clearly needed, under the guidance of a healthcare professional.

• Probenecid
• Antacids with aluminum or magnesium
• Iron supplements 
• Multivitamins with iron

• Other cephalosporins like cefpodoxime and cefuroxime.
• Amoxicillin or Augmentin (amoxicillin/clavulanate)
• Macrolides like azithromycin or clarithromycin.