After-Calf Bolus 1.92 g Tablet is a Health Canada–registered veterinary drug (DIN 00237531) held by Dominion Veterinary Laboratories Ltd., containing Sulfanilamide. Health Canada lists its status as Dormant (status date 16 Jun 2021). Nexara Health has matched 34 registrations of Sulfanilamide across 1 other regulated market.
Health Canada registration
| DIN | 00237531 |
|---|---|
| Brand name | After-Calf Bolus |
| Active ingredient | Sulfanilamide |
| Strength | 1.92 g |
| Dosage form | Tablet |
| Route | Intrauterine |
| Company | Dominion Veterinary Laboratories Ltd. |
| Status | Dormant — 16 Jun 2021 |
| Class | Veterinary |
| ATC | |
| AHFS | |
| Regulator record | Health Canada DPD entry · Product monograph |
Sulfanilamide registered in other markets
34 registrations of the same molecule in 1 national registry outside Canada (first 8 shown, exact strength and form first). Each row is taken from the regulator's own published list; status is shown as the registry reports it.
| Country | Product | Marketing authorisation holder | Strength | Form | Status | Registry |
|---|---|---|---|---|---|---|
| Taiwan | Antibactor Powder | 中美兄弟製藥股份有限公司 | 外用粉劑 | Registered | TFDA | |
| Taiwan | PIZHINING Powder (SULFANILAMIDE) | 詠大製藥股份有限公司 | 外用粉劑 | Registered | TFDA | |
| Taiwan | Salfamine "Mey See" | 美西製藥有限公司 | 粉劑 | Registered | TFDA | |
| Taiwan | Sulfamin Powder (Sulfanilamide) "E.g." | 美西製藥有限公司 | 散劑 | Registered | TFDA | |
| Taiwan | Sulfamine Powder (Sulfanilamide) "Jilly" | 正長生化學製藥股份有限公司 | 散劑 | 已註銷 | TFDA | |
| Taiwan | Sulfaminum | Kiyosu Pharmaceutical Co. Ltd. | （粉） | 已註銷 | TFDA | |
| Taiwan | Sulfaminum | Kiyosu Pharmaceutical Co. Ltd. | （粉） | 已註銷 | TFDA | |
| Taiwan | Sulfanilamide | N.v. Chemische Industric "Katwijk" | （粉） | 已註銷 | TFDA |
See every manufacturer of Sulfanilamide worldwide →
Marketed Canadian products with the same active ingredient
| DIN | Product | Company | Strength | Form |
|---|---|---|---|---|
| 00308226 | After-Calf Bolus | Professional Veterinary Laboratories | 1.92 g | Tablet |
Sourcing through Nexara Health
Nexara Health is a Health Canada–licensed wholesaler (DEL #3-002896) in Winnipeg. This DIN is not currently marketed in Canada. The registrations above show which regulated markets hold an equivalent presentation that can be sourced for clinical comparator use or on a named-patient basis under Health Canada's Special Access Programme. Request a quote or read how named-patient and foreign-pack supply works in Canada.
Frequently asked questions
Is After-Calf Bolus (DIN 00237531) marketed in Canada?
No. Health Canada lists DIN 00237531 as Dormant as of 16 Jun 2021.
Who holds the Canadian licence for this product?
Dominion Veterinary Laboratories Ltd. is the company of record in the Health Canada Drug Product Database.
Is Sulfanilamide registered outside Canada?
Yes — Nexara Health has matched 34 registrations in 1 other market (see the table above).
Where does this data come from?
Health Canada Drug Product Database (DPD), DIN 00237531, status date 2021-06-16; national medicine registries: TFDA. Nexara Health re-checks these sources weekly and shows the last verification date at the top of the page.
Source: Health Canada Drug Product Database (DPD), DIN 00237531, status date 2021-06-16; national medicine registries: TFDA.
Health Canada Drug Product Database (DPD), DIN 00237531, status date 2021-06-16; national medicine registries: TFDA. Last reviewed 2026-09-17. Nexara Health is a licensed wholesaler and supplies licensed entities only; consumer orders are routed to a partner pharmacy.