Doxycycline Side Effects and Management

Common Side Effects

Nausea, vomiting, and diarrhea are the most frequent adverse effects, occurring in approximately 15.7% of patients compared to 5.9% with placebo 1
Dysphagia and abdominal discomfort occur commonly, particularly with standard formulations 2, 3
Photosensitivity and rash are the most common skin reactions 2, 3, 4, 5

Esophagitis and esophageal ulcerations can occur in patients on long-term therapy 2, 4, 5
Pseudomembranous colitis (C. difficile infection) can develop 2, 4, 5
Hepatotoxicity including hepatitis, jaundice, and hepatic failure (rare but potentially fatal) 2, 4, 5
Stevens-Johnson syndrome and toxic epidermal necrolysis are life-threatening conditions 2, 3, 4, 5
Benign intracranial hypertension (pseudotumor cerebri) presents with headache and visual changes 2, 3, 4, 5
Anaphylaxis and anaphylactoid reactions (including shock and fatalities) can occur 2, 4, 5

Take doxycycline with a full glass of water (at least 200ml) while sitting or standing to prevent esophageal ulceration 2, 3, 4, 5
Separate from antacids containing aluminum, calcium, or magnesium by 2-3 hours 2, 3, 4, 5
Avoid concurrent iron-containing preparations 3
Separate from caffeine and vitamin C by 1-2 hours as they reduce bioavailability 6
Avoid extensive sunlight or UV irradiation throughout treatment 1, 2, 4, 5

Intermittent monitoring of CBC, renal function (U&Es), and liver function tests (LFTs) throughout treatment 2, 4, 5

Hypersensitivity to doxycycline or other tetracyclines 2, 3, 4, 5
Children under 12 years of age due to permanent tooth discoloration and enamel hypoplasia 2, 4, 5
Pregnancy (Category D) and breastfeeding 3