United States· US:23155-741_c8abc0eb-6bb6-4f7b-a7bf-793cf90c5ead
Theophylline
A theophylline product containing theophylline anhydrous, registered in United States by Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.. The same ATC class is registered in 12 of our 19 countries.
Checked against FDA National Drug Code directory (United States) on
Informational only — not a medical device.
Where it is registered
Theophylline is registered in 12 of 19 countries.
Countries holding a registration under ATC R03DA04 (theophylline), each read from that country’s own register.
- This record: United States, from FDA National Drug Code directory (United States)
- 6 of them publish a price we can compare per daily dose
Theophylline · ATC R03DA04
12 / 19 countries
- Belgiumprice
- Canada
- Czechiaprice
- Denmark
- Finlandprice
- Germany
- Ireland
- Japan
- Norwayprice
- Polandprice
- United Kingdom
- United Statesprice
Price per daily dose
What a daily dose of theophylline costs, country by country.
Normalised to the WHO defined daily dose (0.4 g), so markets compare like for like.
- United States: $0.71 per daily dose (median across products in the class)
- Public list prices, converted to USD at the rate date shown
Theophylline · price per daily dose (0.4 g)
USD · FX 28 Sept 2026
- US United States$0.71 (acquisition cost)
The record
At a glance
FDA National Drug Code directory (United States)- Active substance
- THEOPHYLLINE ANHYDROUS
- Manufacturer
- Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.
- Country
- United States (US)
- ATC code
- R03DA04
- ATC class
- Theophylline
- Defined daily dose
- 0.4 g, O
- Reimbursed
- Not published by this register
- Source register
- FDA National Drug Code directory (United States)
- Last checked
- September 27, 2026
Packs & prices · 6
- ndc112315574101100 TABLET, EXTENDED RELEASE in 1 BOTTLE (23155-741-01)
- ndc112315574105500 TABLET, EXTENDED RELEASE in 1 BOTTLE (23155-741-05)
- ndc1123155741101000 TABLET, EXTENDED RELEASE in 1 BOTTLE (23155-741-10)
- ndc1123155-741-01
- ndc1123155-741-05
- ndc1123155-741-10
Regulatory notes
No shortage, Orange Book or US label notes for this record.
Interactions
438 interactions on record for theophylline.
Graded by severity as the source publishes them — 34 severe. Severity grades are free for everyone; mechanism and management come with Growth.
- Severity for every pair — free, no plan needed
- The source, licence and sync date on every record
- Mechanism and what to do for each pair — Growth plan
Theophylline · interactions on record
438 records
- 34 severe
- 222 moderate
- 45 minor
- 132 info
Most severe, free to view
- MexiletineC01BB02severe
- RiociguatC02KX05severe
- PindololC07AA03severe
- PropranololC07AA05severe
5 more interactions with mechanism and management, from a commercially licensed source.
Sign in to check- Interaction severity from DDInter 2.0 (Xiong G. et al., Nucleic Acids Res.), licensed CC BY-NC 4.0 — free for non-commercial use only; not covered by the Drug Database commercial licence.
Same medicine, other countries
Theophylline in 13 other countries
What each register calls a product with the same active substance — salts and hydrates count as the same.
- NorwayTeofyllin Aurora Medical2care4 ApS
- FinlandRetafyllinOrion Corporation
- United KingdomTheo-Dur 300mg tabletsAstraZeneca UK Ltd
- SpainTEROMOL RETARD 300 MG COMPRIMIDOS DE LIBERACIÓN PROLONGADALaboratorio Aldo Union S.L.
- IrelandUNIPHYLLIN 300 mg Prolonged-Release TabletsEnnogen Healthcare (Europe) Limited
- CanadaAA-THEO LAAA PHARMA INC
- SwedenTheo-Dur 300 mg DepottablettKaro Pharma AB
- Japanテオフィリン東和薬品
Authorised across Europe · EMA
The same active substance is authorised in 26 EEA countries. Names it is sold under:
- Austria · Theospirex, Theospirex Retard
- Belgium · Xanthium
- Bulgaria · Теотард
- Cyprus · Theo-Dur
- Czechia · Euphyllin Cr N
- Germany · Afpred Forte-Theo, Bronchoretard
- Denmark · Theo-Dur, Unixan
- Estonia · Teotard
- Spain · Elixifilin, Teromol Retard
- Finland · Retafyllin
- France · Dilatrane, Tedralan
- United Kingdom (Northern Ireland) · Uniphyllin
- Greece · Theo-Bros, Theo-Dur
- Croatia · Teotard
- Hungary · Theophyllini Fono Vii. Naturland, Theophyllini Fono Viii. Parma
- Ireland · Uniphyllin
- Lithuania · Teotard
- Luxembourg · Xanthium
- Latvia · Teotard
- Norway · Theo-Dur
- Poland · Euphyllin Long, Theophyllinum Tramco
- Portugal · Unicontin
- Romania · Teotard
- Sweden · Theo-Dur
- Slovenia · Teotard
- Slovakia · Euphyllin Cr N 200, Euphyllin Cr N 300
Source: European Medicines Agency, Article 57 product data.
Sourced from a public register and reproduced with attribution. Drug Database is not affiliated with, endorsed by, or a partner of FDA National Drug Code directory (United States). This is an informational data service and not a medical device — verify against the official source of record before any clinical decision.
For developers
The same record over the API, and the raw payload
GET /v1/drugs/b7d88d41-5a37-43d0-a8ee-95d0621f90cc GET /v1/drugs/b7d88d41-5a37-43d0-a8ee-95d0621f90cc?format=fhir
Every response carries last_synced_at, so freshness is a field rather than a promise. Below is exactly what the ingestion wrote, before any presentation — the same JSON the API returns under payload.
{
"route": "ORAL",
"source": "ndc",
"strength": "300",
"substance": "THEOPHYLLINE ANHYDROUS",
"productndc": "23155-741",
"dosage_form": "TABLET, EXTENDED RELEASE",
"dea_schedule": null,
"strength_unit": "mg/1",
"application_number": "ANDA089763",
"marketing_category": "ANDA"
}See everything about theophylline.
This page is the registration. A free account adds the label text as the regulator wrote it, what it costs per daily dose across the markets that publish a price, a feed of what changes in the registers, and an assistant that answers with its sources. Interaction severity is free; mechanism and management are on the Growth plan. No card, nothing to install.