Ofloxacin composition?

Ofloxacin is a synthetic fluoroquinolone antibiotic that is used to treat a wide variety of bacterial infections.
Below is a quick “cheat‑sheet” on the key pieces that make up the drug—both the chemical itself and the typical excipients you’ll find in common dosage forms.

1. The Core Ingredient

2. Typical Excipients in Common Formulations

Note: Exact excipients can vary by manufacturer and country. The table below shows a “generic” blend that many brands use for tablets, oral suspensions, and ophthalmic solutions.

a) 200 mg Oral Tablet (most common)

b) 200 mg/5 mL Oral Suspension

c) 0.30 % Ophthalmic Solution (common dose)

The preservative benzalkonium chloride is used to keep the solution sterile, but it can cause mild irritation in some patients. For a preservative‑free formulation, eye drops are often available in single‑use vials.

d) Ear Drops (0.3 % solution)

3. What You Should Look For on a Label

4. Quick “Cheat‑Sheet” of the Chemical Composition

If you’re more interested in the pure chemical composition rather than the whole tablet:

• Ofloxacin (free base):
  C18 H20 F N3 O4

  • 18 carbon atoms
  • 20 hydrogen atoms
  • 1 fluorine atom
  • 3 nitrogen atoms
  • 4 oxygen atoms

• Ofloxacin hydrochloride:
  Adds one chlorine and one hydrogen atom to make a salt:
  C18 H20 F N3 O4 HCl

5. Bottom Line

• Active ingredient: Ofloxacin (a fluoroquinolone).
• Common dosage forms: Tablets (200 mg), oral suspension, eye drops (0.3 %), ear drops.
• Typical excipients: Lactose, cellulose, magnesium stearate, povidone, preservatives (benzalkonium chloride, benzyl alcohol).
• Molecular weight: 331.33 g/mol (free base).

If you have a specific brand or country‑specific formulation in mind, let me know and I can pull out the exact excipient list for that product. Otherwise, the tables above should give you a solid baseline of what “ofloxacin” usually contains.