Factive (gemifloxacin mesylate) is a type of antibiotic medication that is used to treat a variety of bacterial infections. It belongs to the fluoroquinolone class of antibiotics and works by killing the bacteria that are causing the infection. This article will cover the uses, dosage, demographics, side effects, interactions, and generic options of Factive, based on medically cited sources. Uses: Factive is primarily used to treat bacterial infections in adults, such as: 1. Pneumonia: It is used to treat community-acquired pneumonia (CAP) caused by Streptococcus pneumoniae, Haemophilus influenzae, and other bacteria. 2. Acute bacterial exacerbation of chronic bronchitis (ABECB): It is used to treat bacterial infections that cause ABECB. 3. Acute bacterial sinusitis (ABS): It is used to treat bacterial infections that cause ABS. Dosage: The recommended dosage of Factive is 320 mg once daily for 5 to 10 days, depending on the severity of the infection. It should be taken orally, with or without food, at the same time each day. Demographics: Factive is FDA-approved for use in adults over the age of 18. It should not be used in children, pregnant women, or breastfeeding mothers due to the risk of possible side effects. Side Effects: Factive may cause some side effects, although not everyone experiences them. The most common side effects include: 1. Nausea 2. Diarrhea 3. Headache 4. Dizziness 5. Vomiting 6. Abdominal pain 7. Insomnia 8. Skin rash 9. Photosensitivity 10. Joint pain 11. Tendinitis Rare but serious side effects include: 1. Seizures 2. Hallucinations 3. Depression 4. Suicidal thoughts 5. Liver damage 6. Kidney damage 7. Peripheral neuropathy If you experience any of these side effects, stop taking Factive and contact your doctor immediately. Interactions: Factive may interact with other medications, including: 1. Antacids: Factive should not be taken with antacids that contain aluminum or magnesium, as they may decrease the absorption of the medicine. 2. Warfarin: Factive may increase the risk of bleeding if taken with warfarin, a blood thinner. 3. Theophylline: Factive may increase the levels of theophylline, a medication used to treat asthma and chronic obstructive pulmonary disease (COPD), in the blood. Other common medications that may interact with Factive include sucralfate, didanosine, and anticoagulants. Generic Options: Factive is a brand name medication, but there are generic options available, such as gemifloxacin mesylate tablets. These generic medications are just as effective as the brand name version and are often more affordable. Conclusion: Factive is an effective antibiotic medication that is used to treat bacterial infections in adults. It is important to use this medication as prescribed by your doctor and to follow the recommended dosage and duration of treatment. If you experience any side effects, stop taking Factive and contact your doctor immediately. If you have allergies or medical conditions, be sure to inform your doctor before taking this medication.