Cialis Daily with antibiotics: interactions and safety

Antibiotic courses are common, short-term and often combined with chronic medications such as Cialis Daily (Tadalafil). Most antibiotics do not interfere meaningfully with Tadalafil at 2.5mg, 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 Erectile Dysfunction (ED) agents. Rifampicin has the opposite effect, accelerating metabolism. Most penicillins, cephalosporins, fluoroquinolones and tetracyclines have no clinically meaningful interaction with Tadalafil at 2.5mg, 5mg.

Practical guidance

According to the prescribing information for Tadalafil, an antibiotic course should be reviewed by the prescriber or pharmacist for known interactions before Cialis Daily is co-administered. Adjusted 2.5mg, 5mg dosing or temporary substitution is sometimes preferred for the duration of the antibiotic course.

Frequently asked questions

Can I take Cialis Daily during an antibiotic course? ▾

For most common antibiotics, yes. A few classes — notably macrolides and azole antifungals — alter how Tadalafil is metabolised and may need a temporary 2.5mg, 5mg adjustment. The prescribing pharmacist should review any new antibiotic against the existing Cialis Daily regimen.

Will antibiotics make Cialis Daily stop working? ▾

Most antibiotics do not affect Cialis Daily efficacy. Rifampicin and a few others can lower Tadalafil levels and reduce effect; in those cases the prescriber may adjust the dose during and shortly after the antibiotic course.

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