Having a history of being pretty inconsistent with taking my supplements, I began a two-month course of NAD with the sole purpose of writing about the experience. No expectations.

However, having only previously tried some strongly flavoured liquid marine collagen sachets, my main motivation when deciding to try these tablets was the promise of achieving younger-looking skin without the daily struggle of having a bitter taste in my mouth right before breakfast.

I went for NAD+’s Enhanced Optima Max, a concentrated dose of Nicotinamide Adenine Dinucleotide, a molecule that plays a crucial role in various biological processes, particularly in energy production within cells.

In pop culture terms, NAD IV therapy is credited (partly) for keeping names like Hailey and Justin Bieber, Kendall Jenner, Rihanna and Cindy Crawford young and fabulous.

In fact, in a previous episode of The Kardashians, Hailey and Kendall can be seen having an IV treatment while the former declared: “I’m going to NAD for the rest of my life and never age.”

This alone might have been persuasive enough for most to try these supplements, but what really sold them to me was the idea of improving energy levels and brain function while reducing the signs of ageing.

When I first started taking NAD+ I immediately noticed my energy levels going up, which led to feeling more productive and taking on new activities and work challenges.

It had been a really busy period for me, with many lifestyle changes and work-related burnout, so finding something that was helping me placate that so quickly was unexpected and almost seemed surreal.

At the same time, I noticed the often-highlighted effect of these kinds of supplements: my skin was looking healthier and ‘glowier’ and the plumpness I’d lost after weight loss returned.

My hair, which had previously been bleached and looked damaged, looked glossy and felt much softer again.

Overall, there seemed to be no cons to trying these supplements, with the high price point being more than justified in the results.

For those looking to try NADclinic’s Optima Max Supplements, one-month supplies can be bought from nadirect.com for £79.99.

However, there are other options at different price points in the market, available from various websites, including Amazon, which sells Charava NAD+ for £63.99.