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8 min read

NAD+ Side Effects & Safety: What to Know Before You Start (IV, Injection & Oral)

NAD+ is generally well tolerated, and most side effects are mild, temporary, and tied to how fast or how much you take rather than the molecule itself. Across all three delivery routes — intravenous (IV) infusion, subcutaneous or intramuscular injection, and oral NMN/NR supplements — the most commonly reported effects are flushing or a warm […]

Dr. Marcus Tan, MD
8 min read

Does NAD+ Actually Work? What the Human Studies Really Show (2026)

Short answer: it depends on what you mean by “work.” If the question is whether NAD+ therapy and precursors like NMN and NR actually raise the NAD+ levels in your body, the answer is a clear yes — that part is well established in human trials. If the question is whether raising your NAD+ delivers […]

Dr. Marcus Tan, MD
8 min read

How to Increase NAD+ Naturally: Food, Fasting, Exercise & Sleep

You can support NAD+ naturally by exercising (especially high-intensity interval training), practicing intermittent fasting or caloric restriction, eating foods rich in niacin and tryptophan, prioritizing quality sleep, using heat exposure like sauna, and limiting alcohol, overeating, and excess UV exposure. These habits stimulate the enzymes that recycle and rebuild NAD+, and they can meaningfully slow […]

Dr. Marcus Tan, MD
7 min read

NAD+ IV Therapy for Addiction Recovery: How It Works, Protocol & Evidence

NAD+ IV therapy for addiction is used by some recovery and detox clinics as a complementary, supportive option during early recovery, with the goal of helping with low energy, cravings, and post-acute withdrawal symptoms (PAWS). It is not a standalone treatment, not a cure, and not FDA-approved for substance use disorder (SUD) or withdrawal. The […]

Dr. Marcus Tan, MD
8 min read

NAD+ vs NMN vs NR: Which NAD Booster Is Right for You? (2026 Evidence)

Short answer: NAD+ is the destination, and NMN and NR are two routes to get there. NAD+ (nicotinamide adenine dinucleotide) is a coenzyme your cells use for energy and repair, but you can’t efficiently absorb the whole molecule as an oral pill. So most supplements use a precursor the body converts into NAD+. The two […]

Dr. Marcus Tan, MD
19 min read

NAD+ Therapy Cost in 2026: Annual Spend by Protocol (IV vs SubQ vs Oral)

2026 NAD+ cost ranked by protocol: IV $6k-$25k, SubQ $1.8k-$9.6k, at-home telehealth $1.8k-$5.4k, oral $480-$1.2k. 12-provider price matrix.

Dr. Marcus Tan, MD
17 min read

NAD+ and Peptide Longevity Stacks: GHK-Cu, BPC-157, Epitalon Protocols (2026 Research Review)

Research-protocol review of NAD+ stacked with GHK-Cu, BPC-157, and Epitalon. Dosing, cycling, FDA status, and how to find a licensed prescriber.

Dr. Marcus Tan, MD
14 min read

NAD+ Bioavailability by Delivery Method: IV vs SubQ vs Sublingual vs Patch vs Oral (2026 Data)

Published 2026 NAD+ bioavailability data: IV ~100%, SubQ 90-95%, sublingual 10-22%, patch 5-15%, oral 2-10%. SubQ delivers 80-90% of IV elevation at 5-10% of the cost.

Dr. Marcus Tan, MD
9 min read

The Complete Guide to NAD+ Anti-aging Supplements in 2025

Discover how NAD+ supplements can support cellular health, longevity, and anti-aging. Learn about NAD+ precursors, benefits, and how to choose the best NAD+ products for your anti-aging goals.

Dr. Marcus Tan, MD
8 min read

IV NAD+ Therapy: Complete Guide to Anti-aging Infusions

Discover how IV NAD+ therapy works for anti-aging, its benefits, costs, and what to expect from intravenous NAD+ infusions for cellular health and longevity.

Dr. Marcus Tan, MD
8 min read

NAD+ Injections for Anti-aging: Benefits and Protocol

Explore NAD+ injection therapy as an anti-aging treatment. Learn about intramuscular NAD+ injections, benefits, protocols, and how they compare to IV therapy and oral supplements.

Dr. Marcus Tan, MD
10 min read

IV vs Injections vs Oral NAD+: Anti-Aging Compared

Comprehensive comparison of IV NAD+ therapy, injections, and oral supplements for anti-aging. Learn which treatment method is best for your goals, budget, and lifestyle.

Dr. Marcus Tan, MD