# Is the lead content in NMN safe?

**URL:** <https://forum.plantpills.co.uk/t/is-the-lead-content-in-nmn-safe/274>\
**Category:** General discussion\
**Created:** [January 2, 2020, 10:31am UTC](https://forum.plantpills.co.uk/t/is-the-lead-content-in-nmn-safe/274 "2020-01-02T10:31:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Adam](https://forum.plantpills.co.uk/user_avatar/forum.plantpills.co.uk/adam/32/163_2.png) [@Adam](https://forum.plantpills.co.uk/u/Adam)\
**Post date:** [January 2, 2020, 10:31am UTC](https://forum.plantpills.co.uk/t/is-the-lead-content-in-nmn-safe/274/1 "2020-01-02T10:31:53Z")

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> Hello. I am concerned about lead in the November 2019 batch. A little over 0.3ppm. Higher than I would like.

The [current batch of NMN](https://forum.plantpills.co.uk/t/third-party-lab-testing-for-our-current-batch-of-nicotinamide-mononucleotide-nmn/266/7) has a lead content of 0.311 ppm. Its important to take serving size into account - the upper NMN dose is 1g.

Chicken breast has a lead content of 0.15 ppm (Ramadan E. Abdolgader, Ramadan A. Hussain, Salah M. Hasan, Agoub A. Agoub. Food and Nutrition Sciences, 2013, 4, 763-766).

A typical serving size of chicken may be 100g. So 50x 1g servings of this batch of NMN will have approximately the same lead content as a single 100g serving of chicken.

Put another way, the same lead content would be consumed over approximately 2 months of NMN supplementation, as a single serving of chicken.

So although the PPM measurement is higher than some standard foods, the serving size is such that it is a relatively small amount and is perfectly safe for human consumption.