⚠️ Disclaimer

NAD+ is a research compound. It is not approved by the FDA or any regulatory body for human use. This article is for educational and informational purposes only. Nothing here constitutes medical advice. Consult a qualified physician before considering any peptide use.

NAD+ is administered via oral (tablets, capsules, sublingual) at 250-1000 mg daily (NR/NMN precursors); 5-10 mg daily (NADH) once daily. Subcutaneous injections into the abdominal fat or thigh are most common. Proper reconstitution with bacteriostatic water is required first.

How Do You Inject NAD+?

NAD+ is administered via oral (tablets, capsules, sublingual). For most researchers, subcutaneous injection is the standard approach — it's simple, relatively painless, and effective for Coenzyme, metabolite, cellular cofactor compounds.

This guide covers injection technique, site selection, needle choices, and common mistakes.

How Do You Prepare for a NAD+ Injection?

Step 1: Wash your hands thoroughly.

Step 2: Clean the top of the NAD+ vial and BAC water vial with alcohol swabs. If not yet reconstituted, see our NAD+ reconstitution guide.

Step 3: Draw your dose (250-1000 mg daily (NR/NMN precursors); 5-10 mg daily (NADH)) into an insulin syringe. Use our calculator for exact units.

Step 4: Clean the injection site with an alcohol swab and let it dry.

What Is the Correct Injection Technique?

Subcutaneous (most common): Pinch a fold of skin — typically abdominal fat 2+ inches from the navel, or the thigh. Insert the needle at a 45-degree angle. Push the plunger slowly and steadily. Hold for 5 seconds, then withdraw.

Intramuscular (less common for NAD+): Insert the needle at 90 degrees into the muscle (deltoid or vastus lateralis). This route provides faster absorption but isn't necessary for most peptide protocols.

Rotate injection sites to prevent lipodystrophy (fat tissue changes from repeated injections in the same spot).

What Size Needle Should You Use?

For subcutaneous NAD+ injections, 29-31 gauge insulin needles (½ inch or 8mm) are standard. These are thin enough to be nearly painless while long enough for proper subcutaneous delivery.

Use a fresh needle for every injection. Never reuse or share needles.

Calculate Your NAD+ Dose

Use our free peptide dosing calculator to get exact reconstitution math and syringe units for NAD+.

Open Calculator →

What Are Common Injection Side Effects?

Mild redness, swelling, or itching at the injection site is normal and typically resolves within hours. Small bruises can occur, especially if you hit a capillary.

If you experience persistent pain, swelling, warmth, or redness lasting more than 24 hours, discontinue and consult a healthcare provider — these may indicate infection.

Bottom Line on NAD+ Injection

NAD+ is administered via oral (tablets, capsules, sublingual) at 250-1000 mg daily (NR/NMN precursors); 5-10 mg daily (NADH) once daily. Subcutaneous injection with a 29-31 gauge insulin needle into abdominal fat is the standard technique. Rotate sites and use a fresh needle every time.

Complete Guide

NAD+ : Benefits, Dosage, Side Effects & Research

Read the Full Guide →

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Research-Grade Sourcing

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Frequently Asked Questions

What is NAD+?

NAD+ (Nicotinamide Adenine Dinucleotide) is a Coenzyme, metabolite, cellular cofactor. Endogenous molecule synthesized from dietary tryptophan or nicotinamide (vitamin B3); exists in all living cells as essential cellular energy currency. It is researched for increased ATP production, mitochondrial function, DNA repair, sirtuin activation, metabolic flexibility, anti-aging, cognitive function.

What is the recommended NAD+ dosage?

Common dosages: 250-1000 mg daily (NR/NMN precursors); 5-10 mg daily (NADH) administered once daily via oral (tablets, capsules, sublingual). Cycle length: continuous supplementation; no cycling required. Half-life: ~1 hour for NAD+ itself; precursors (NMN, NR) have variable half-lives. Use our peptide calculator for exact reconstitution math.

What are the side effects of NAD+?

NADH well-tolerated. High-dose nicotinamide (>3000 mg) can cause nausea, skin flushing, elevated liver enzymes. NMN and NR precursors show fewer side effects with no flushing or liver toxicity reported at standard doses.

Is NAD+ safe?

NAD+ has shown a favorable safety profile in research. NAD+ precursors (NR, NMN) legally available as dietary supplements in US. NADH available as supplement. Not FDA-approved as drug. All research should follow appropriate safety protocols.