Lhasa Limited shared knowledge shared progress

Nitrites in Excipients

Supporting more scientifically driven nitrosamine risk assessments.

Vitic Nitrites in Excipients Logo
  • A collaborative data sharing project for assessing the levels of nitrites in excipients
  • Become a member to join regular and evolving consortium discussions


The Nitrites in Excipients project is part of Lhasa's efforts to support nitrosamine risk assessment. By sharing data on the level of nitrites in excipients, consortium members will be able to assess the likelihood that a nitrate or nitrite will react to form a nitrosamine. Used in this way, the Nitrites in Excipients database will allow members to understand the risk posed by nitrosamines in the drug product.

Using the Vitic database, members of the consortium will regularly share analytical data with Lhasa Limited. As the honest broker, Lhasa will then expertly curate the data from participating organisations. This allows a level of anonymity, whereby the submitting companies are known to each other, but who submitted what is known to Lhasa Limited only.

The most recent Nitrites in Excipients database (2021.3) contains:

  • 600 data records in the Excipients Results table
  • 112 data records in the Excipient Summary table
  • This data covers 77 excipients

Figures 1 and 2 illustrate the growth of the database so far.

Figure 1: Recorded number of studies in the database. Figure 2: Recorded number of excipients in the database.



The benefits that can be achieved by joining this data sharing consortium include:

  • Support Nitrosamine Risk Assessment: The project uses high-quality data from proprietary sources, which will aid in nitrosamine risk assessment, 
  • Utilise Proprietary Data: Expand your knowledge of nitrite levels present in a wide range of excipients.
  • Save Time: Data in the Nitrites in Excipients database can support multiple risk assessments; it can help to establish the risk of nitrosamine formation, to confirm conclusions of risk and ensure that appropriate controls have been established. It is expected that this database will reduce the requirement for drug product testing, by helping to establish the level of risk posed by nitrosamines.
  • Continually Expanding Database: Consistent member contributions mean that the database will constantly grow and therefore provide a better indication of risk.

The Consortium

The consortium consists of pharmaceutical companies that contribute analytical data on the level of nitrites in excipients. As the consortium takes quality of data seriously, all shared data conforms to predefined quality standards and a validation approach (developed by Lhasa Limited and experts from the consortium).

To ensure the continued success of the project, the consortium comprises of an elected chairperson and has regular meetings to: 

  • Discuss and agree upon the scientific direction of the project
  • Contribute expertise and share knowledge
  • Develop and regularly review a validation approach
  • Discuss cross-laboratory testing
  • Recommend priorities for the consortium and the database

Why Choose Lhasa?

Lhasa Limited - an honest broker and trusted holder of data

Lhasa is a not-for-profit organisation and believes that shared knowledge can lead to shared progress. Recognised as the original "Honest Broker", Lhasa Limited has repeatedly been trusted with proprietary data and this can be seen with our involvement in other collaborative data sharing projects.

Get Involved

To find out more about data sharing opportunities at Lhasa Limited, please get in touch.

© 2021 Lhasa Limited | Registered office: Granary Wharf House, 2 Canal Wharf, Leeds, LS11 5PS, UK Tel: +44 (0)113 394 6020
VAT number 396 8737 77 | Lhasa Limited is registered as a charity (290866)| Company Registration Number 01765239 (England and Wales).

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