Josamycin (Josacine): Uses, Warnings, and Key Facts
Quick summary: Josamycin is an antibiotic used for certain bacterial infections. It is known by the brand name Josacine. The original content describes use in sensitive infections affecting the bronchopulmonary, mouth and throat, skin,...
This content is for educational purposes only and does not replace medical advice, diagnosis or treatment from a qualified healthcare professional.
Quick summary: Josamycin is an antibiotic used for certain bacterial infections. It is known by the brand name Josacine. The original content describes use in sensitive infections affecting the bronchopulmonary, mouth and throat, skin, and urogenital areas.
Important: Always check the official patient leaflet or ask a doctor or pharmacist for advice tailored to the specific product and situation.
Medical disclaimer: This article is for general information only. It does not replace professional medical advice, diagnosis, or treatment. Do not start, stop, or change any medicine based on this page alone.
What is josamycin?
Josamycin (also written as Josamicina) is a medicine used to treat infections caused by bacteria that are sensitive to it. The brand name mentioned in the source content is Josacine.
How does josamycin work?
The source content states that josamycin interferes with bacterial protein synthesis. In practical terms, this means it helps stop bacteria from growing and multiplying.
What is josamycin used for?
The original content lists use in sensitive germ infections, including:
- Bronchopulmonary infections
- Stomatological infections
- Cutaneous infections
- Urogenital infections
Whether josamycin is appropriate depends on the type of infection and whether the bacteria are sensitive to it.
Dosage information from the source
The original content provides the following oral dosing information. This should be verified with the official leaflet or a healthcare professional before use.
| Group | Source content |
|---|---|
| Adults | 0.5–1 g every 12 hours |
| Children and infants | 30–50 mg/kg/day in 2 doses |
| Children with body weight ≥ 20 kg | 500 mg every 12 hours, with an increase of 25 mg every 12 hours per kg |
| Children with body weight ≥ 10 kg | 250 mg every 12 hours, with an increase of 25 mg every 12 hours per kg |
| Infants with body weight 5 kg | 125 mg every 12 hours, with an increase of 20 mg every 12 hours per kg |
Because dosing can vary by product, age, weight, and clinical situation, the official leaflet and prescriber instructions are essential.
When should josamycin not be used?
The source content lists the following contraindications:
- Hypersensitivity to this medicine or other macrolides
- Severe liver failure
Warnings and precautions
The original content highlights these precautions:
- Mild or moderate liver failure: dosage adjustment and monitoring may be needed.
- Pseudomembranous colitis: a risk is mentioned in the source content.
- Heart rhythm concerns: ventricular arrhythmia and ventricular extrasystolic tachycardia are noted in patients with prolonged QT.
Liver failure
Josamycin is described as contraindicated in severe liver failure. In mild or moderate liver failure, the source content advises dose adjustment and monitoring.
Drug interactions listed in the source
The following interactions are mentioned in the original content:
- Not recommended: ergotamine or derivatives, due to risk of ischemia in the extremities
- Use with caution: bromocriptine, warfarin, digoxin, hexobarbital, carbamazepine, disopyramide, lovastatin
- May reduce the effect of: penicillins and cephalosporins
- May increase plasma levels of: cyclosporine; the source notes dose adjustment and renal monitoring if combined
- Avoid: terfenadine or astemizole because of increased QT or ventricular arrhythmia risk
- Possible drowsiness with: triazolam
If you take any prescription medicine, ask a pharmacist or doctor to review possible interactions before using josamycin.
Pregnancy and breastfeeding
Pregnancy
The source content says safety in pregnancy is not established and that it should be used only if the expected benefit outweighs the potential risk.
Breastfeeding
The original content states that josamycin passes into human breast milk and that breastfeeding should be discontinued when it is given to breastfeeding women.
Possible side effects
The source content lists the following occasional adverse reactions:
- Rash
- Anorexia
- Nausea
- Vomiting
- Satiety
- Abdominal pain
- Diarrhea
- Dyspepsia
If any side effect seems severe, persistent, or unusual, seek medical advice promptly.
What to verify before using josamycin
Because this page is based on a short source summary, it is wise to confirm the following with an official leaflet or healthcare professional:
- The exact product name and formulation
- The correct dose for age and body weight
- Whether the infection is sensitive to josamycin
- Possible interactions with other medicines
- Whether liver problems, pregnancy, or breastfeeding change the advice
FAQ
▸ Is josamycin an antibiotic?
Yes. The source content describes josamycin as a medicine used to treat bacterial infections.
▸ What is the brand name of josamycin?
The brand name mentioned in the source content is Josacine.
▸ What infections is josamycin used for?
The source content lists bronchopulmonary, stomatological, cutaneous, and urogenital infections caused by sensitive germs.
▸ Can josamycin be used in liver disease?
The source content says it is contraindicated in severe liver failure and should be used with caution, dose adjustment, and monitoring in mild or moderate liver failure.
▸ Does josamycin interact with other medicines?
Yes. The source content lists several interactions, including ergotamine derivatives, warfarin, digoxin, cyclosporine, and some medicines linked to QT prolongation.
▸ Is josamycin safe in pregnancy or breastfeeding?
The source content says pregnancy safety is not established and that breastfeeding should be discontinued when the medicine is given to breastfeeding women.
Safety reminder: Always check the official medication guide, especially for dosing, interactions, liver problems, pregnancy, and breastfeeding. If symptoms worsen or a reaction occurs, seek medical help promptly.
Sources and reference links
- FDA Medication Guides
- UNII: HV13HFS217
- ChemIDplus
- DrugPortal
- PubChem CID: 5282165
- NCI Thesaurus: C83851
Medical disclaimer
This content is for educational purposes only. It should not be used as a substitute for professional medical advice, diagnosis or treatment. Always ask a doctor, pharmacist or qualified healthcare professional before starting, stopping or changing any medicine.
Sources and verification
The following sources or official references are listed to support verification of the medicine information discussed in this article.
Medicine information can change and may vary depending on country, product formulation, patient history and professional guidance. Always check official medicine information and ask a healthcare professional for personal medical questions.