What the FDA labels say about taking them together
Histamine and terbutaline
Histamine's FDA label of November 3, 2025 names terbutaline in its drug interactions (prescription label) section; the terbutaline label PlainMeds reads does not name histamine. The histamine label: “Beta 2 Agonists: Oral terbutaline and parenteral ephedrine, in general, have been shown to decrease allergen induced wheal.”
Check it at the source: the histamine FDA label on DailyMed (effective November 3, 2025); the terbutaline FDA label on DailyMed (effective November 15, 2019, ANI Pharmaceuticals, Inc.).
What does the histamine label say about terbutaline?
Histamine label, drug interactions (prescription label)Beta 2 Agonists: Oral terbutaline and parenteral ephedrine, in general, have been shown to decrease allergen induced wheal.
Source: FDA drug label (Histaminum hydrochloricum), Boiron, effective November 3, 2025 (SPL set 85b905d4-5fa3-7125-e053-2a91aa0a54f4), via openFDA; the full label on DailyMed
What does the terbutaline label say about histamine?
Terbutaline's label (effective November 15, 2019) does not name histamine in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Terbutaline Sulfate), NDA017849 (Ani Pharms), as published by ANI Pharmaceuticals, Inc., effective November 15, 2019 (SPL set d810a15b-3e10-4f6c-a36e-8ddecbaba9c3), 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
| Histamine | Terbutaline | |
|---|---|---|
| Labeled for | n/a | n/a |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | n/a | $0.947 per tablet 2.5 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