Canadian DIN & Molecule SearchMolecules A–ZDrug ShortagesResourcesHealth Canada WeeklyRequest a Quote

THEO ER 400 MG

THEOPHYLLINE : 400 MG · DIN 02360101 · AA PHARMA INC

Health Canada status: MARKETED

What is THEO ER?

THEO ER 400 MG contains THEOPHYLLINE : 400 MG. It is listed in the Health Canada Drug Product Database under DIN 02360101, held by AA PHARMA INC, supplied as TABLET (EXTENDED-RELEASE) for ORAL administration. Health Canada currently lists it as marketed, status dated 23-Jun-2011. Nexara Health is a licensed Canadian wholesale distributor (DEL 3-002896-A) and can source this product for hospitals, pharmacies and clinics. Availability and lead time are confirmed per order.

What is THEO ER used for?

Symptomatic treatment of reversible bronchoconstriction associated with asthma, emphysema, chronic bronchitis and related bronchospastic disorders in patients 12 years and older.

Authorized indication as written in the Health Canada product monograph. For healthcare professionals and licensed purchasers; this is not medical advice.

Product details and regulatory record

DIN02360101
Brand nameTHEO ER
Generic / active ingredientTHEOPHYLLINE : 400 MG
ManufacturerAA PHARMA INC
Strength400 MG
Dosage formTABLET (EXTENDED-RELEASE)
Route of administrationORAL
SchedulePrescription
ATC codeR03DA04 THEOPHYLLINE
AHFS class86:16.00
BiosimilarNo
Health Canada statusMARKETED
Status date23-Jun-2011
Original market date2011-06-23 00:00:00

How is it administered?

Individualize dose based on response and serum levels (target 5-15 mcg/mL). Initial adult dose: 400-600 mg once daily, preferably in the evening with food. Tablets must be swallowed whole.

Included because it drives pack selection and wastage. Consult the monograph.

How is it stored and handled?

Not explicitly stated in provided text (Section 11 is in Table of Contents but text ends at Section 9).

How is it supplied?

Bottles of 100 tablets.

Contraindications

Hypersensitivity to theophylline or xanthines; coronary artery disease (where cardiac stimulation is harmful); peptic ulcers; concomitant use with ephedrine in children.

Warnings and precautions

Narrow therapeutic index. Not for status asthmaticus. Risk of toxicity at levels >20 mcg/mL. Use caution in cardiac disease, hypertension, seizures, and elderly patients.

What can be used instead?

Other Canadian products sharing ATC code R03DA04 THEOPHYLLINE. 6 of 39 DINs in this group are currently marketed — marketed products are listed first, because that is what can actually be bought. These tables describe supply, not clinical equivalence: substitution rests with the prescriber or pharmacist, and interchangeability is determined provincially.

ProductStrengthFormManufacturerHealth Canada statusDIN
AA-THEO LA100 MGTABLET (EXTENDED-RELEASE)AA PHARMA INCMARKETEDDIN 00692689
AA-THEO LA200 MGTABLET (EXTENDED-RELEASE)AA PHARMA INCMARKETEDDIN 00692697
AA-THEO LA300 MGTABLET (EXTENDED-RELEASE)AA PHARMA INCMARKETEDDIN 00692700
ELIXIR DE THEOPHYLLINE80 MG / 15 MLELIXIRLABORATOIRE ATLAS INCMARKETEDDIN 00627410
THEO ER600 MGTABLET (EXTENDED-RELEASE)AA PHARMA INCMARKETEDDIN 02360128
APO-THEO ER400 MGTABLET (EXTENDED-RELEASE)APOTEX INCAPPROVEDDIN 02358395
APO-THEO ER600 MGTABLET (EXTENDED-RELEASE)APOTEX INCAPPROVEDDIN 02358409
PMS-THEOPHYLLINE ELIXIR80 MG / 15 MLELIXIRPHARMASCIENCE INCCANCELLED POST MARKETDIN 00575151
PULMOPHYLLINE ELX80 MG / 15 MLELIXIRLABORATOIRE RIVA INC.DORMANTDIN 00466409
QUIBRON T SR TAB 300MG300 MGTABLET (EXTENDED-RELEASE)BRISTOL LABS DIVISION OF BRISTOL-MYERS SQUIBBCANCELLED POST MARKETDIN 00556742

Who else supplies THEOPHYLLINE worldwide?

Nexara tracks national medicine registries and published price lists across multiple markets. THEOPHYLLINE appears in 1365 registered pack listings across 7 markets, published on 7 different national price bases. Where a Canadian route is closed, that is where an alternative route of supply starts — subject to the import rules in both countries.

Registered listings are not stock. Ask us to confirm what can actually be sourced for your order.

How can I get it?

Nexara Health supplies this product to licensed Canadian buyers — pharmacies, hospitals, clinics, licensed distributors, and clinical trial sponsors or their CROs. We confirm stock, pack size, expiry and pricing at the time of quotation. If the product is on backorder or in shortage, we identify equivalent alternatives and import options where permitted.

Request a quote for THEO ER

Ordering questions

Who can buy this from Nexara?

Licensed entities only. Nexara holds Health Canada establishment licence DEL 3-002896-A and ships only to a licensed address.

Is there a minimum order?

Yes, set per product line and per pack multiple rather than on the order total, so you are never asked to buy a part-pack. The minimum for this line is confirmed with your quote.

What is the lead time?

Confirmed per order at quotation, and it depends on current stock position and whether the product is in shortage.

Can Nexara supply this for a clinical trial?

Yes — comparator and background-therapy supply, including sourcing from other markets where a Canadian pack will not satisfy the protocol. Clinical trial supply.

Request a quote for THEO ER

Health Canada Drug Product Database (DPD), DIN 02360101. Last reviewed 2026-09-08. Nexara Health is a licensed wholesaler and supplies licensed entities only; consumer orders are routed to a partner pharmacy.