Isoniazid 150 mg with rifampicin 300 mg tablets: Supply issue

Affected product

Because of difficulty getting some of the active ingredients, there has been delays in the manufacturing of the following medicine:

Isoniazid with rifampicin

• Presentation: Tab Isoniazid 150 mg with rifampicin 300 mg
• Brand: Rifinah
• Pharmacode: 251240
• Subsidy: $179.13
• Measure / Qty: per 100

Schedule listing for isoniazid with rifampicin(external link)

Alternative products

There is not enough of the isoniazid 100 mg with rifampicin 150 mg to use as an alternative for everyone needing the isoniazid 150 mg with rifampicin 300 mg tablet. 

The datasheet indicates that anyone over 50 kg needs to take two of the 150 mg tablets. In such cases, the single chemical tablets can be used:

• 3 x Isoniazid Tab 100 mg (Noumed Isoniazid) Pharmacode 2695901 and
• 2 x Rifampicin Cap 300 mg (Rifadin Sanofi) Pharmacode 2669838

We understand that this is not an ideal and people needing to take additional tablets can cause difficulties. However, this approach means people can continue to access treatment.

Schedule listing for Noumed Isoniazid(external link)

Schedule listing for Rifampicin Sanofi(external link) 

Expected resupply

The supplier expects normal stock levels to return by mid-July 2025.

Who to contact

If you have questions about this issue, email enquiry@pharmac.govt.nz

Please include as much information as you can about the product (presentation, brand, Pharmacode) and who your wholesaler is.

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