Mannitol is a sugar alcohol commonly used as an excipient in medications [1]. It functions as a bulking agent and diluent, particularly in solid dosage forms like tablets and capsules [2]. Its inert nature makes it suitable for many pharmaceutical applications [2].
What is mannitol's role in tablet manufacturing?
Mannitol is frequently used in direct compression tablet formulations due to its good flow properties and compressibility [2]. It helps create tablets that are uniform in weight and hardness [2]. It is also used in orally disintegrating tablets (ODTs) because it dissolves quickly and has a pleasant, cooling sensation in the mouth, masking the taste of active ingredients [1][2].
How does mannitol compare to other pharmaceutical excipients?
Unlike some other diluents, mannitol has a low hygroscopicity, meaning it absorbs very little moisture from the atmosphere. This characteristic is beneficial for moisture-sensitive active pharmaceutical ingredients (APIs), helping to maintain the stability of the final drug product [1][2]. Its sweet taste also makes it a preferred choice for ODTs and chewable tablets [2].
Are there any side effects associated with mannitol in medication?
When used as an excipient in typical oral medication dosages, mannitol is generally considered safe and well-tolerated [1]. However, if ingested in very large quantities, such as in some medical applications where it is administered intravenously as an osmotic diuretic, it can cause gastrointestinal disturbances like diarrhea or dehydration [1]. These effects are not generally seen when used as a typical tablet excipient.
Where is mannitol primarily sourced from?
Mannitol can be derived from natural sources like fruits and vegetables or produced synthetically through the hydrogenation of fructose [1]. Pharmaceutical-grade mannitol must meet stringent purity standards [1].