what is capsule, advantage and disadvantage of capsules

1. INTRODUCTION TO CAPSULES-

Capsules are solid dosage forms in which drug substance is enclosed within

hard or soft soluble shell. The shells are generally formed from gelatin.

 Capsules are of two types:

1. Hard gelatin capsules

2. Soft gelatin capsules

A. ADVANTAGES OF CAPSULES:

· Capsules are tasteless, odorless and can easily be administered.

· Combination of powders can be incorporated

· They are attractive in appearance.

· The drugs having un-pleasant odor and taste are enclosed in a tasteless shell.

· They can be filled quickly and conveniently.

· Physician can change the dose and combination of drug according to patient requirement.

· They are economical.

· They are easy to handle and carry.

B. DISADVANTAGES OF CAPSULES:

· Hygroscopic drugs are not suitable for filling into capsules, because they absorb water present in capsule shell makes shell very brittle and ultimately lead to crumble into pieces.

· The concentrated solutions which require previous dilution are unsuitable for capsules because if administered as such lead to irritation in the stomach