Digestive Issues
Nausea
Vomiting
Diarrhea
Stomach pain
Loss of appetite
Allergic Reactions
Rash
Itching
Swelling (especially of the face, lips, or throat)
Severe anaphylactic reactions (in rare cases)
Antibiotic-Associated Diarrhea & InfectionsClostridioides difficile (C. diff) infection: Can cause severe diarrhea and colitis.
Yeast infections
Effects on Gut Microbiome
Can disrupt healthy gut bacteria, leading to digestive issues and weakened immunity
Photosensitivity
Some antibiotics (like tetracyclines) make the skin more sensitive to sunlight, increasing the risk of sunburn.
Liver or Kidney Toxicity
– Some antibiotics (like rifampin, amoxicillin-clavulanate) can affect liver function.
– Others (like aminoglycosides) can impact kidney function.
Neurological Effects (Rare but Serious)
Dizziness
Headaches
Seizures
Blood and Heart Effects
– Some antibiotics (like fluoroquinolones) may cause irregular heart rhythms.
– Others (like chloramphenicol) can affect blood cell production.