Adverse Events (<5%) Profile by Treatment1,3

* In color or firmness
The antianabolic action of the tetracyclines may cause an increase in blood urea nitrogen (BUN). While this is not a problem in those with normal renal function, in patients with significantly impaired renal function, higher serum levels of tetracycline may lead to azotemia, hyperphosphatemia, and acidosis.
References
1. PYLERA® Capsules Prescribing Information. 3. Laine L, Hunt R, El-Zimaity H, Nguyen B, Osato M, Spenard J. Bismuth-based quadruple therapy using a single capsule of bismuth biskalcitrate, metronidazole, and tetracycline given with omeprazole versus omeprazole, amoxicillin, and clarithromycin for eradication of Helicobacter pylori in duodenal ulcer patients: A prospective, randomized, multicenter, North American trial. Am J Gastroenterol 2003; 98:562-567. 5. Torres MJ et al. Diagnostic evaluation of a large group of patients with immediate allergy reaction to penicillins: the role of skin testing. Allergy 2001; 56:850-856.