Synthetic steroid (STEAR)
Tibolone with antibiotics: interactions and safety
Antibiotic courses are common, short-term and often combined with chronic medications such as Tibolone (Tibolone). Most antibiotics do not interfere meaningfully with Tibolone at 2.5mg, but a few classes do, and a small number of combinations are best avoided.
Common antibiotic interactions
Macrolides (clarithromycin, erythromycin) and certain antifungals can inhibit hepatic metabolism (CYP3A4) and raise plasma levels of many medications including some Synthetic steroid (STEAR) agents. Rifampicin has the opposite effect, accelerating metabolism. Most penicillins, cephalosporins, fluoroquinolones and tetracyclines have no clinically meaningful interaction with Tibolone at 2.5mg.
Practical guidance
According to the prescribing information for Tibolone, an antibiotic course should be reviewed by the prescriber or pharmacist for known interactions before Tibolone is co-administered. Adjusted 2.5mg dosing or temporary substitution is sometimes preferred for the duration of the antibiotic course.
Frequently asked questions
Can I take Tibolone during an antibiotic course? ▾
For most common antibiotics, yes. A few classes — notably macrolides and azole antifungals — alter how Tibolone is metabolised and may need a temporary 2.5mg adjustment. The prescribing pharmacist should review any new antibiotic against the existing Tibolone regimen.
Will antibiotics make Tibolone stop working? ▾
Most antibiotics do not affect Tibolone efficacy. Rifampicin and a few others can lower Tibolone levels and reduce effect; in those cases the prescriber may adjust the dose during and shortly after the antibiotic course.
Products containing Tibolone
More on Tibolone
- With alcoholTibolone and alcohol — is it safe to drink?
- With foodShould Tibolone be taken with food?
- Side effectsTibolone side effects: common, rare and warning signs
- Dosage guideTibolone dosage guide: how much to take and when
- OnsetHow fast does Tibolone start working?
- DurationHow long does Tibolone last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.