Caution👀: Why does it say ""Coupon code is invalid"" after entering the Promo Code?

1. Please check no space in between the Promo Code
2. Upper/ Lower case only (case sensitive)
3. If issue persist, please re-enter again after 20 minutes

Terms and Conditions

This offer is eligible to Watsons Hong Kong eShop only.  Only for MoneyBack members.

This offer is only valid from 21 - 31 Aug 2025, MoneyBack Member purchase selected Tru Niagen products:

***** Enter promo code 【TNB6F2】to Purchase 6pcs of below items at $1,974, extra free 2pcs upon buying 6pcs ****

• TRU NIAGEN® NAD+ Booster 300mg 30s (Boxless Edition)
• Tru Niagen NAD+ Booster 300mg 30s (With Box)
• TRU NIAGEN® Beauty 50MG 60s
• Tru Niagen Immune Daily Defense 30s

While stocks last.  This discount cannot be used in conjunction with other promo codes.   

This offer cannot be used in conjunction with MoneyBack Member discount offers. This offer is not applicable to MoneyBack Thankful Promotion, MoneyBack Member Day, or any MoneyBack Member Extra Discount Day. Not applicable to express delivery service; calculated on a single invoice.