Quick answer: Charava NMN (UK, 1,000mg/serve) targets serious biohackers at premium price; WIIP NMN Boost+ (NZ, 500mg/serve) targets the clinical RCT dose range of 250-500mg/day documented by Yi et al. 2023 (PMC10518569) and Igarashi et al. 2022. For most New Zealanders, 500mg with proven absorption + local clinical context (Auckland Wellness Centre) is the better starting choice. Higher dose (1,000mg+) does not yet have stronger RCT evidence for healthy adults.
If you are shopping for NMN in New Zealand, you have likely come across both Charava (a UK premium brand often associated with the David Sinclair longevity space) and WIIP NMN Boost+ (NZ-manufactured, formulated by Dr. Jun at Auckland Wellness Centre). Both are 99%+ purity. Both ship to NZ. The real question: which is the better fit for you?
I am Dr. Jun, Senior Chiropractor at Auckland Wellness Centre. This guide compares the two in plain language, using peer-reviewed evidence rather than marketing claims.
The Dose Question , 500mg or 1,000mg?
Charava NMN typically ships in a 1,000mg-per-serve format. WIIP NMN Boost+ delivers 500mg per 2-capsule serving (250mg per capsule). Which is correct?
The strongest peer-reviewed RCT evidence to date has used 250-500mg/day:
- Yi et al. 2023 (multicenter RCT, middle-aged adults): 250-500mg dose-dependent NAD+ increases. PMC10518569
- Igarashi et al. 2022 (trained adults, exercise endurance): 250mg/day raised NAD+. PubMed 35197709
- Yoshino et al. 2021 (prediabetic women): 250mg/day improved muscle insulin sensitivity. PubMed 33888596
1,000mg+ doses exist in some research and influencer communities, but the published RCT support for healthy adults is thinner than the 250-500mg range. Higher dose does not automatically mean better outcomes; it can mean more cost without proportional benefit, and slightly higher risk of GI symptoms in some individuals.
Local Clinical Context vs International Brand
Charava is a UK brand. The product itself can be high quality, but you are buying without local clinical context , no NZ practitioner backing, no physical clinic to ask questions, and shipping from Europe.
WIIP NMN Boost+ is selected and developed by Dr. Jun at Auckland Wellness Centre in Rosedale. If you have questions, you can email or visit the clinic. The supplement is positioned as "born in the clinic, backed by science." For New Zealanders who want clinician-backed product without paying $200+ for international shipping, this is a meaningful difference.
Side-by-Side Comparison
| Factor | WIIP NMN Boost+ | Charava NMN |
|---|---|---|
| Country of manufacture | New Zealand | UK |
| Dose per serving | 500mg (clinical RCT range) | 1,000mg (premium tier) |
| Capsule format | 250mg × 2 caps | 500mg × 2 caps (typical) |
| Clinical RCT support | Yes, exact dose range | Higher than RCT range |
| Local practitioner | Dr. Jun, AWC | None in NZ |
| Shipping | Free NZ shipping over $80 | International (longer) |
| Price (typical) | NZD 94.99 (15% off subscribe) | Higher (premium tier) |
| Subscribe & Save | 15% off + free shipping | Limited NZ subscription |
Who Should Choose Charava?
- Serious biohackers wanting 1,000mg+ doses (with awareness of thinner RCT support)
- Strong David Sinclair / longevity influencer community alignment
- Willing to pay premium for international brand
Who Should Choose WIIP NMN Boost+?
- Most New Zealand adults starting NMN at the clinical RCT dose range (250-500mg)
- Those who value local clinician backing (Auckland Wellness Centre)
- Those wanting NZ manufacturing + free local shipping + Subscribe & Save
- Those preferring evidence-aligned dosing over higher-is-better marketing
For New Zealand readers ready to start, see WIIP NMN Boost+. AWC patients can use code AWCPATIENT15 for 15% off the first order.
Related Reading
NMN Supplement NZ Buyer's Guide · NMN Dosage Guide · Best NMN Supplements NZ 2026 · NMN vs NR vs NAD+.
Sources
- Yi L, et al. (2023). "The efficacy and safety of β-NMN supplementation in healthy middle-aged adults." GeroScience. PMC10518569 [VERIFIED]
- Igarashi M, et al. (2022). "Chronic NMN supplementation elevates blood NAD+ levels and exercise endurance." NPJ Aging. PubMed 35197709 [VERIFIED]
- Yoshino M, et al. (2021). "NMN increases muscle insulin sensitivity in prediabetic women." Science. PubMed 33888596 [VERIFIED]
- Massudi H, et al. (2012). "Age-associated changes in NAD+ metabolism." PLoS ONE. PMC4112140 [VERIFIED]
- NZ Therapeutic Products Act 2023. legislation.govt.nz [VERIFIED]
Disclaimer: This article is for informational purposes only and does not constitute medical advice. Dietary supplements are not medicines and are not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare professional before starting any supplement regimen.