What the FDA labels say about taking them together
Famciclovir and raloxifene
Famciclovir's FDA label of September 17, 2025 names raloxifene in its drug interactions section; the raloxifene labels PlainMeds reads (2) do not name famciclovir. The famciclovir label: “Raloxifene, a potent aldehyde oxidase inhibitor in vitro, could decrease the formation of penciclovir.”
Check it at the source: the famciclovir FDA label on DailyMed (effective September 17, 2025, Macleods Pharmaceuticals Limited); the raloxifene FDA label on DailyMed (effective April 14, 2026, Amneal Pharmaceuticals LLC).
What does the famciclovir label say about raloxifene?
Famciclovir label, drug interactionsRaloxifene, a potent aldehyde oxidase inhibitor in vitro, could decrease the formation of penciclovir.
Source: FDA drug label (Famciclovir), Macleods Pharmaceuticals Limited, effective September 17, 2025 (SPL set eeeee9c4-8566-4100-8ca4-3df936a3365d), via openFDA; the full label on DailyMed
What does the raloxifene label say about famciclovir?
Raloxifene's label (effective April 14, 2026) and its 1 other brand-application label do not name famciclovir in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Raloxifene Hydrochloride), Amneal Pharmaceuticals LLC, effective April 14, 2026 (SPL set 3798c70b-a4b0-4811-9788-e4c9cff47ebe), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Famciclovir | Raloxifene | |
|---|---|---|
| Labeled for | Herpes and shingles | Osteoporosis, Breast cancer |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | $0.214 per tablet 125 mg tablet | $0.223 per tablet 60 mg tablet |
| Shortage now | No current entry | No current entry |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once