NAD+ Dosage Guide: How Much Should You Take Daily?
NAD+ therapy has become one of the most sought-after treatments in men's health optimization, and for good reason. At Atlas Men's Health, we see patients every week who want to know exactly how much NAD+ they should be taking and how often. The answer depends on your delivery method, your health goals, and where you are in your treatment timeline. This guide covers the right NAD+ dosage per day, how to dose NAD+ injection protocols, and how to match your dosage to your goals.
What Is NAD+ and Why Does Dosage Matter?
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme found in every cell of your body. It plays a direct role in energy production, DNA repair, and the activation of sirtuins - proteins that regulate cellular aging. The problem is that your NAD+ levels drop significantly as you get older. Most men lose up to 50% of their NAD+ between ages 40 and 60, which contributes to fatigue, slower recovery, cognitive decline, and accelerated aging.
Supplementing with NAD+ can help restore those levels, but the dosage matters. Too little and you will not notice meaningful results. Too much too quickly and you risk unnecessary side effects like nausea or flushing. The right protocol finds the sweet spot where your body can absorb and use NAD+ efficiently without overloading your system.
For most people, a standard NAD+ injection dosage per day falls between 50 and 200mg per session, administered 2-3 times per week. But the ideal NAD+ dosage shifts depending on how you receive your NAD+ and what you are trying to achieve.
NAD+ Dosage by Administration Route
Understanding how to dose NAD+ starts with knowing your delivery options. Each route has different bioavailability, dosing protocols, and ideal use cases. Here is how they compare.
Subcutaneous Injections
Subcutaneous (SubQ) injections are the most common method for at-home NAD+ therapy. You inject a small amount just under the skin, typically in the abdomen or thigh.
Starting dose: 50mg per injection
Working dose: 100-200mg per injection
Frequency: 2-3 times per week
Best for: ongoing maintenance, convenience, self-administration at home
Most clinicians recommend starting at the lower end and increasing gradually over 2-3 weeks. This lets your body adjust and helps you find the dose that delivers results without side effects.
IV Therapy
IV therapy infusions deliver NAD+ directly into your bloodstream, bypassing the digestive system entirely. This means near-complete absorption and faster onset of effects.
Standard dose: 250-500mg per session
Intensive protocols: up to 1,000mg per session
Frequency: weekly during loading phase, then 1-2 times per month for maintenance
Session length: 1-3 hours depending on dose
Best for: rapid restoration of depleted levels, loading phase, maximum therapeutic impact
IV NAD+ is typically administered in a clinical setting. The slower drip rate is intentional - pushing NAD+ too fast intravenously can cause chest tightness, nausea, or flushing.
Nasal Spray
Nasal spray offers a convenient daily option for NAD+ support between injection or IV sessions. The bioavailability is lower than injections, but the ease of daily use makes it a practical addition to a broader protocol.
Best for: daily maintenance support, bridging between injection days
Use: as directed by your provider, typically once daily
Loading Phase vs Maintenance: How to Start NAD+ Therapy
If you are new to NAD+ therapy, most protocols begin with a loading phase designed to rapidly restore your depleted levels. Think of it as filling the tank before switching to regular top-offs.
Loading Phase (Weeks 1-2)
During the loading phase, doses are higher and more frequent:
SubQ injections: 100-200mg daily for 7-14 days
IV therapy: 500mg sessions, 2-3 times in the first week
Goal: quickly raise intracellular NAD+ levels to a therapeutic baseline
Some patients feel increased energy and improved mental clarity within the first few days of loading. Others notice changes more gradually over the first week.
Maintenance Phase (Week 3 onward)
Once your levels are restored, the maintenance phase keeps them steady:
SubQ injections: 50-100mg, 2-3 times per week
IV therapy: one session per month (250-500mg)
Nasal spray: daily between sessions
Goal: sustain optimal NAD+ levels long-term without over-supplementing
The transition from loading to maintenance should be guided by how you feel and your provider's assessment. There is no universal switch date - it depends on your starting levels, age, and health status.
NAD+ Dosage by Health Goal
Your ideal NAD+ dosage per day also depends on what you are trying to accomplish. Here is a general framework, though your clinician will tailor the specifics.
Anti-Aging and Cellular Repair
NAD+ activates sirtuins and supports DNA repair mechanisms, both of which slow biological aging at the cellular level. For anti-aging protocols, most patients do well with moderate maintenance doses of 100mg SubQ 2-3 times per week, or a monthly IV session of 250-500mg.
Energy and Cognitive Performance
NAD+ is essential for mitochondrial function, which directly affects how much energy your cells produce. If brain fog and fatigue are your main concerns, a loading phase followed by consistent 100-150mg SubQ injections tends to produce noticeable improvements within 1-2 weeks.
Athletic Recovery
For men focused on performance and recovery, NAD+ supports faster muscle repair and reduces oxidative stress from training. Higher maintenance doses around 150-200mg SubQ 2-3 times per week may be appropriate, combined with periodic IV sessions after heavy training blocks.
Immune Support
NAD+ strengthens immune cell function and helps your body manage inflammation more effectively. Standard maintenance dosing (50-100mg, 2-3 times per week) typically provides adequate immune support, especially when combined with other wellness therapies like glutathione or vitamin infusions. Much like finding the right sermorelin dosage for weight loss, the key is matching NAD+ dosage to your specific needs.
Side Effects and Safety Considerations
NAD+ therapy is well-tolerated by most patients, but there are a few things to be aware of.
Common side effects include:
Flushing or warmth, especially during IV infusions
Mild nausea, usually dose-related
Discomfort at the injection site (SubQ)
Lightheadedness during the first few sessions
These effects are almost always temporary and dose-dependent. Starting with a lower dose and increasing gradually is the most effective way to minimize them. If you experience persistent side effects, your provider can adjust the dose, frequency, or administration route.
NAD+ therapy may not be appropriate for everyone. Patients with certain medical conditions or those taking specific medications should discuss NAD+ with their healthcare provider before starting. This is one of the main reasons clinician-led protocols exist - a qualified provider can evaluate your full health picture before recommending a dosage.
Frequently Asked Questions
What is the standard NAD+ injection dosage per day?
The standard NAD+ injections dosage is 50-200mg per session rather than a strict daily dose. Subcutaneous injections are typically administered 2-3 times per week, not every day. Your clinician will determine the right amount based on your health status and treatment goals.
How often should I get NAD+ injections per week?
When planning your NAD+ injection dosage per week, 2-3 subcutaneous sessions is the standard frequency. During a loading phase, daily injections may be recommended for 7-14 days. IV NAD+ sessions are less frequent - usually weekly during loading and monthly for maintenance.
Can I take NAD+ every day?
Daily NAD+ is common during the loading phase (first 1-2 weeks) and when using nasal spray for ongoing support. For injections, most maintenance protocols space sessions every other day or 2-3 times per week rather than daily, as this gives your body time to utilize each dose effectively.
How long does it take to feel the effects of NAD+ therapy?
Many patients report improved energy and mental clarity within the first few days of a loading phase. More substantial changes in sleep quality, recovery, and overall vitality typically develop over 2-4 weeks. Body composition and anti-aging benefits build gradually over 2-3 months of consistent therapy.
Is NAD+ therapy safe?
NAD+ therapy has a strong safety profile when administered under medical supervision. Side effects are generally mild and dose-related. Working with a qualified provider ensures your dosage is appropriate for your health status and that any issues are caught and addressed early.
What is the difference between NAD+ injections and IV therapy?
Subcutaneous injections deliver smaller doses (50-200mg) that you can self-administer at home, making them ideal for regular maintenance. IV therapy delivers larger doses (250-1,000mg) directly into the bloodstream with near-complete absorption, making it better for loading phases or when rapid results are the priority. Many patients use both methods as part of a complete protocol.
