Intestinal absorption of fluoride preparations

Area of Science:

• Pharmacology
• Gastroenterology
• Otolaryngology

Background:

• Sodium fluoride is used to treat conditions like cochlear otospongiosis.
• Understanding the gastrointestinal absorption of different sodium fluoride preparations is crucial for effective treatment.
• Variability in absorption can impact therapeutic outcomes.

Purpose of the Study:

• To compare the gastrointestinal absorption of five different sodium fluoride preparations.
• To identify the most bioavailable sodium fluoride formulation.
• To provide dosing recommendations for treating active cochlear otospongiosis.

Main Methods:

• Gastric intestinal absorption was assessed by measuring ten-hour urinary excretion of sodium fluoride.
• Five distinct sodium fluoride preparations were evaluated.
• Absorption rates were compared across different formulations.

Main Results:

• Non-enteric coated sodium fluoride exhibited the highest absorption rate.
• All three enteric-coated preparations demonstrated significantly poorer absorption compared to non-enteric coated forms.
• Florical showed better absorption than enteric-coated tablets and slightly less than plain sodium fluoride.
• Marked individual variations in absorption were observed with enteric-coated preparations.

Conclusions:

• The formulation of sodium fluoride significantly impacts its gastrointestinal absorption.
• Non-enteric coated sodium fluoride is the most readily absorbed preparation.
• Florical is a viable option for treating cochlear otospongiosis, with a recommended dosage of two capsules three times daily.