NAD Injection Dosage Per Day: What to Know Before You Start

See how leading NAD injection programs compare before choosing a provider.

Most people researching NAD injection dosage per day are surprised to find that the majority of structured programs are not actually dosed on a strict daily basis. Understanding how dosing frequency works in practice helps set accurate expectations before you begin.

Daily vs Every Other Day vs Weekly
NAD injections are most commonly administered two to three times per week during a loading phase — not every single day. True daily injection protocols exist but are less common in at-home telehealth programs and are typically reserved for people with significant acute NAD+ depletion, post-viral recovery, or specific clinical indications. Most at-home programs structure dosing at three injections per week during the loading phase before transitioning to one to two injections per week for maintenance.

What Daily Dosage Actually Means
When people search for NAD injection dosage per day they are typically asking one of two questions — either how many milligrams per injection they should take, or how often they should inject. The answer to the milligram question depends entirely on the program tier you are enrolled in and what your provider has prescribed. Common milligram ranges across different program tiers include:

Starting tier: 50–100mg per injection

Standard tier: 250–500mg per injection

High dose tier: 500–1000mg per injection

The frequency at which you inject determines your effective daily average dose. Someone injecting 500mg three times per week is averaging approximately 214mg per day of NAD+ — though the delivery is concentrated into three doses rather than spread evenly across seven days. For a structured breakdown of how these tiers compare see our NAD Injection Protocol guide.

Your NAD injection dosage per day is not a one-size-fits-all number — it is determined by a combination of clinical and personal factors that your provider evaluates before prescribing a protocol. Understanding these factors helps you have a more informed conversation with your telehealth provider and set realistic expectations for what your program will look like.

Baseline NAD+ Depletion Level
The more severely your NAD+ levels are depleted, the higher the initial dosage your provider may recommend during the loading phase. People dealing with significant age-related decline, post-viral exhaustion, or chronic stress-induced depletion often start at higher milligram tiers than people pursuing NAD+ therapy primarily for general wellness and optimization.

Health Goals
Your primary treatment goal directly influences dosage structure. People using NAD injections for chronic fatigue or brain fog recovery often require higher doses and more frequent injections than those pursuing longevity and cellular maintenance. For more on how dosage relates to specific symptom profiles see our NAD Injections for Energy and NAD Injections for Chronic Fatigue guides.

Body Weight and Metabolism
Individual metabolic rate affects how quickly NAD+ is processed and utilized at the cellular level. People with faster metabolisms may require more frequent dosing to maintain elevated NAD+ levels between injections. This is one reason why provider-guided dosing — rather than self-directed supplementation — produces more consistent results.

Phase of Treatment
Loading phase dosing is always higher than maintenance phase dosing. During the loading phase the goal is to rapidly replenish depleted NAD+ stores — which requires more frequent and often higher-dose injections. Once baseline levels are restored the maintenance phase typically involves less frequent injections at the same or slightly lower milligram strength. For a detailed breakdown of how providers structure these phases see our NAD Injection Frequency Guide.

To give a more concrete picture of what NAD injection dosage per day looks like in practice, here is how dosing typically breaks down across the most common program tiers offered by telehealth providers.

Starting Tier — 50 to 100mg Per Injection
Starting tier programs are designed for people who are new to NAD+ injection therapy and want to evaluate their individual response before committing to higher doses. At this tier people typically inject two to three times per week — producing an effective daily average of roughly 15 to 43mg per day. Results at this tier are modest and gradual. This tier is appropriate for general wellness maintenance and people with mild NAD+ depletion who are sensitive to new therapies.

Standard Tier — 250 to 500mg Per Injection
The standard tier is the most common starting point for people pursuing NAD+ therapy for meaningful therapeutic results. At 500mg injected three times per week the effective daily average is approximately 214mg per day. This tier produces noticeable improvements in energy, cognitive function, and physical recovery for most users within the first two to four weeks of a loading protocol. This is the tier most frequently recommended by telehealth providers for people dealing with fatigue, brain fog, or age-related energy decline.

High Dose Tier — 500 to 1000mg Per Injection
High dose protocols are typically reserved for people with significant NAD+ depletion, chronic illness recovery, or those who have completed a standard loading phase and need a more aggressive approach. At 1000mg injected three times per week the effective daily average is approximately 429mg per day. Results at this tier are typically faster and more pronounced — but require careful provider oversight and are generally more expensive on a monthly basis. For a full cost breakdown across tiers see our NAD Injection Cost guide.

Maintenance Phase Dosing
After completing a loading phase most people transition to maintenance dosing of one to two injections per week at the same milligram strength. This reduces the monthly cost significantly while maintaining the elevated NAD+ baseline established during loading. The transition timing varies by provider and individual response but typically occurs after four to eight weeks of consistent loading phase dosing.

Understanding the consequences of incorrect NAD injection dosage per day helps explain why provider-guided protocols produce better outcomes than self-directed supplementation and why dosage calibration matters more than most people realize.

Underdosing
Taking too little NAD+ per day is the most common dosage mistake and the most common reason people report disappointing results from NAD+ therapy. When the dose is insufficient to meaningfully activate sirtuin pathways and restore mitochondrial energy production, the benefits are minimal or unnoticeable. People who underdose — either by choosing a program with too low a milligram tier or by skipping injections during the loading phase — often conclude that NAD+ therapy does not work when the real problem is inadequate dosage. The threshold concentration required to produce clinical effects is higher than many people assume.

Overdosing
Taking significantly more NAD+ than prescribed is not associated with serious toxicity — NAD+ is a naturally occurring compound your body already produces. However high doses administered too rapidly can produce temporary side effects including flushing, nausea, headache, and injection site discomfort. These effects are more common with IV administration at high doses than with subcutaneous at-home injections. If you experience consistent discomfort at your prescribed dose your provider can adjust your protocol accordingly. For a full breakdown of what side effects to expect and how to manage them see our NAD Injection Side Effects guide.

The Case for Provider-Guided Dosing
The reason telehealth providers conduct medical screenings before prescribing NAD+ injection protocols is precisely because dosage calibration matters. A provider who understands your health history, current symptoms, and treatment goals can structure a protocol that gets you to therapeutic NAD+ concentrations efficiently without the trial and error that characterizes self-directed supplementation. For a comparison of top telehealth programs and how they structure dosing oversight see our Best NAD Injections at Home guide.

The right NAD injection dosage per day for your situation depends on your health goals, your baseline NAD+ levels, and the phase of treatment you are in. There is no universal correct answer — but there are clear patterns that consistently produce the best outcomes.

For most people starting NAD+ injection therapy for the first time, a standard tier program at 500mg injected three times per week represents the best balance of effectiveness and cost. This protocol produces meaningful results for the majority of users within the first two to four weeks and establishes the NAD+ baseline needed to transition into a sustainable maintenance schedule.

For people dealing with significant depletion — chronic fatigue, post-viral exhaustion, severe age-related decline — starting at or progressing to a high dose tier produces faster and more pronounced results. The higher monthly cost is justified by the more rapid cellular replenishment and the stronger clinical response most people in this category experience.

For people pursuing general wellness and longevity optimization, a starting tier program is a reasonable low-commitment entry point. Results are more gradual but the lower cost makes sustained long-term use more financially accessible.

In every case the most important principle is this — your NAD injection dosage per day should be determined by a licensed provider based on your individual health profile, not by guesswork or by choosing the cheapest available option. The difference between an underdosed and properly dosed protocol is the difference between noticeable results and no results at all.

To get started with a provider who will structure your dosage appropriately see our Where to Buy NAD Injections guide. To understand what results look like at different dosage levels and timelines see our NAD Injection Results page. For a prescription-based program that includes proper dosage oversight see our NAD Injection Prescription guide.

To compare top at-home NAD injection programs side by side, see our Best NAD Injections at Home guide.

🔒 Valid prescription for NAD or NAD+ injections from a licensed provider required.