Here's where things get interesting. Not all NAD+ delivery methods are created equal.
Method | Absorption | Cost | Time | Best For |
|---|
IV therapy | High (100%) | $250-1,000/session | 2-4 hours | Systemic benefits, addiction recovery |
Oral precursors (NR/NMN) | Moderate (raises blood NAD+) | $30-100/month | Daily | General wellness |
Topical boosters | High (localized) | $40-150/treatment | Minutes | Skin-specific anti-aging benefits |
NAD IV Therapy
Nad injection therapy delivers NAD+ directly into your bloodstream. This bypasses the digestive system entirely, so absorption is nearly 100%.
A 2019 pilot study documented changes in plasma NAD+ during a 6-hour IV infusion, finding that NAD+ did increase (though delayed until after 2 hours) with no observable adverse events (Grant et al., Frontiers in Aging Neuroscience, 2019). The benefits of NAD IV therapy include:
- Immediate availability to cells
- Full systemic distribution
- Noticeable energy boost for many people
The downsides? Cost and time. A single NAD IV session runs $250- $1,000. You'll need a loading phase of 3-6 sessions, then maintenance every 2-4 weeks. That's potentially $3,000-6,000 in year one alone.
Side effects are usually mild—injection site soreness, flushing, or mild nausea. A 2024 systematic review confirmed that NAD supplementation is safe with a low incidence of side effects, with the most common being muscle pain, fatigue, sleep disturbance, and headaches (Pinto et al., 2024). Nad injection therapy is generally well tolerated by healthy adults when administered by medical professionals.
Oral Supplements
Oral NAD+ supplements (often sold as NMN or NR, which are NAD+ precursors) are the most accessible option. Research shows they can effectively raise blood NAD+ levels.
A 2016 study in Nature Communications demonstrated that nicotinamide riboside (NR) is orally bioavailable in humans, with blood NAD+ increasing approximately 90% from baseline after supplementation (Trammell et al., 2016). A 2022 trial confirmed that oral NMN supplementation is safe and efficiently increases blood NAD+ levels in healthy subjects (Frontiers in Nutrition, 2022).
However, for direct NAD+ (not precursors), oral bioavailability is poor due to degradation in the digestive system. The precursor route works by providing building blocks your body converts into NAD+.
Chronic nicotinamide riboside supplementation (a precursor) may help your body produce more NAD+ naturally. A 2023 phase I trial found that NR at doses up to 3000 mg daily for 30 days was safe and associated with pronounced augmentation of the NAD metabolome (Nature Communications, 2023).
Topical NAD+ Skin Boosters
For skin-specific goals, topical delivery makes the most sense. Why send NAD+ through your entire body when you want it in your skin?
Korean skincare has pioneered NAD+ skin boosters that deliver the coenzyme directly to skin cells. Research supports that niacinamide (a NAD+ precursor) applied topically increases dermal collagen production while reducing excess dermal glycosaminoglycan production (Dermatology Times, 2024). This approach offers:
- Higher local concentrations than systemic delivery
- Direct targeting of skin cells that need it
- Fraction of the cost compared to IV therapy
The AMI NAD+ Skin Booster uses this targeted approach. Clinical data show a 42% increase in collagen production and a 38% increase in elastin production with use. That's the kind of measurable outcome that matters for visible anti-aging results.
Clinical data reflect controlled study conditions. Your results may differ based on skin type, age, application method, and consistency of use.