Drug General Information (ID: DDI5RW82L0)
Drug Name			Calcium Phosphate		Drug Info		Omadacycline		Drug Info
Drug Type		Small molecule				Small molecule
Therapeutic Class		Minerals And Electrolytes/Phosphate Binders				Tetracyclines
Structure

Mechanism of Calcium Phosphate-Omadacycline Interaction (Severity Level: Moderate)
Complex formation Click to Show/Hide Mechanism Graph
Drug Name		Calcium Phosphate				Omadacycline
Mechanism		Polyvalent cations				Binds to polyvalent cations
Key Mechanism Factor 1
		Factor Name		Chelation
		Factor Description		Chelation is a direct drug interaction that usually involves the formation of dimers or trimers, resulting in larger complexes and poorer absorption.
Mechanism Description		Decreased absorption of Calcium Phosphate due to formation of complexes caused by Omadacycline

Recommended Action
Management		The administration of tetracyclines and preparations containing aluminum, magnesium, or calcium should be separated by two to four hours.

References
1	Gotz VP, Ryerson GG "Evaluation of tetracycline on theophylline disposition in patients with chronic obstructive airways disease." Drug Intell Clin Pharm 20 (1986): 694-6. [PMID: 3757782]
2	Nguyen VX, Nix DE, Gillikin S, Schentag JJ "Effect of oral antacid administration on the pharmacokinetics of intravenous doxycycline." Antimicrob Agents Chemother 33 (1989): 434-6. [PMID: 2729939]
3	Upton RA "Pharmacokinetic interactions between theophylline and other medication (Part I)." Clin Pharmacokinet 20 (1991): 66-80. [PMID: 1674242]