NAD+ injection in Seoul: slow drip or quick shot?

What a NAD+ injection in Seoul involves

NAD+ (nicotinamide adenine dinucleotide) is a coenzyme found in every cell. It helps turn food into usable energy and supports enzymes involved in DNA repair. Levels appear to fall with age in some tissues, and animal studies of raising NAD+ have been encouraging. That is why NAD+ has become popular in longevity and wellness clinics. You may see it written as NAD, NADS or NAD+; they all refer to the same thing.

At VEI Clinic, a NAD+ injection in Seoul is prescribed only after a one-to-one consultation with Dr. HyunSung Park, a board-certified internal medicine specialist and member of the Korean Institute of Functional Medicine. He reviews your history, medicines and goals, then recommends a route and dose, or advises against it.

IV infusion or intramuscular shot

Neither route has been shown to be more effective than the other for wellness goals. The choice usually comes down to your time, comfort with needles and how you tolerated NAD+ before.

• IV infusion: NAD+ is diluted in fluids and given slowly into a vein. It usually takes longer than the 30–60 minutes of a standard vitamin drip, often a couple of hours or more, because running it fast commonly causes flushing, chest tightness, cramps or nausea. The advantage is that the rate can be slowed the moment you feel uncomfortable.
• Intramuscular (IM) injection: a smaller dose injected into a muscle, usually the upper arm or buttock. The visit is short and no IV line is needed, but the injection can sting and leave the muscle sore for a day.

What the evidence shows

The biology is genuinely interesting, but human evidence is thin. Most clinical trials have tested oral precursors such as nicotinamide riboside (NR) or nicotinamide mononucleotide (NMN). They show that blood NAD+ levels can be raised, yet clear improvements in energy, aging, muscle strength or long-term health have not been consistently demonstrated. Studies of injected or infused NAD+ itself are few and small.

Claims that NAD+ drips reverse aging, treat addiction, sharpen the brain or prevent disease are not established. Some people say they feel better afterward; that may be real for them, but it is not the same as proof. If you are drawn to NAD+ because of fatigue, low mood or brain fog, it is worth checking for common, treatable causes first, such as anemia, thyroid problems, poor sleep or vitamin deficiencies.

Who it may suit, and who should not have it

NAD+ may suit a healthy adult who is curious about longevity medicine, understands that benefits are unproven, and wants it given under medical supervision rather than at a non-medical venue. It makes most sense as one small part of a wider plan built on the things with strong evidence: exercise, sleep, diet, and managing blood pressure, cholesterol and blood sugar. If you want a measurable starting point, Dr. Park can arrange metabolic blood tests and biological-age markers.

• Not offered during pregnancy or breastfeeding, or to anyone under 18.
• Needs caution or is unsuitable with heart disease, significant kidney or liver disease, or a history of fainting with infusions.
• People with active cancer or under cancer treatment should speak to their oncologist first, as NAD+ pathways are involved in cell growth.
• Tell the doctor about blood thinners and all supplements, including NR or NMN products.

Side effects and red flags

Common, short-lived effects during an infusion include flushing, warmth, a tight or heavy feeling in the chest, stomach cramps, nausea, headache and lightheadedness. They usually ease quickly when the drip is slowed or paused. IM injections can cause soreness, redness or bruising at the site.

Call 119 or seek emergency care for chest pain that does not settle once the drip is stopped, difficulty breathing, swelling of the face or throat, fainting, or a racing, irregular heartbeat. See a doctor promptly if an injection site becomes hot, swollen and increasingly painful, or you develop a fever.