Marcus Bell, RN
IV Lead and Check-in Nurse
Marcus places every drip and runs the weekly check-ins, in person before work or on video at lunch. If your plan is his, he is the one who answers when you call.
NAD+ IV · 250 or 500 mg · two to four hours
NAD+ IV in Nashville, run slowly, explained honestly.
NAD+ by IV at 250 mg ($299) or 500 mg ($449), run over two to four hours by a nurse because faster is unpleasant. We tell you what the evidence does and does not show, which is less than the menus around town suggest.
- Two doses, both priced upfront: 250 mg over about two hours, 500 mg over about four.
- Run slowly by a registered nurse, with the rate turned down if you feel flushing or cramping.
- The lounge from 7 am, so a four-hour drip can be done before lunch.
- Honest framing: NAD+ is a molecule every cell uses; the IV raises blood levels. Claims beyond that are not ours to make.
Prefer to talk first? (615) 555-0164
In numbers
What the page promises, in figures.
$299 a drip
250 mg, about two hours
$449 a drip
500 mg, about four hours
2 to 4 hours
Run slowly, on purpose
0 claims
About ageing, memory or addiction
Results vary from person to person. Nothing on this page is a promise of weight lost or kept off, and a program may be declined after the Starting Line if it is not right for you.
Why it works
What NAD+ is, what the drip does, and what nobody has shown yet.
NAD+ is a molecule every cell uses to turn food into energy and to run repair. Levels fall with age. A drip raises the amount in your blood for a while; whether that changes anything you would notice is not something the studies so far can tell you, and we say so before you book four hours in a chair.
People choose it anyway, often as part of a fitness or travel routine, and some report feeling clearer for a few days. We report that as what people say, not as what it does. The drip is run slowly because fast NAD+ causes flushing, nausea and chest tightness; the nurse sets the rate and stays close.
Candour
Who this is for, and who it is not
For
- Adults who have read the honest framing and still want it.
- People with a morning to spare and a book.
- Patients already on a program here who want it alongside a check-in.
Not for, or not yet
- Anyone looking for a treatment for addiction, memory, ageing or any condition. We make no such claim and will not book it on that basis.
- Anyone pregnant or with conditions the intake flags.
- Anyone in a hurry; a fast NAD+ drip is a bad hour.
Who treats you
Named on every page, by design.
Dr. Priya Raman, MD
Medical Director
Priya is a physician with a background in obesity medicine who founded Wrenhaven in 2022. She writes the protocols, reviews every plan before a prescription is written, and is in the building during clinic hours as the collaborating physician.
Illustrative stories. Wrenhaven is a fictional clinic; these are written examples, not patient reviews.
Marcus turned the rate down twice when I flushed and stayed in the room. Four hours, a novel, no drama.
Dr. Raman told me what the research did not show before she let me book. I respected that more than any claim.
What does NAD+ do?
It raises the level of a molecule your cells use for energy and repair. Whether that translates into anything you can feel has not been shown reliably, and we say so.
Why does it take so long?
Because a fast NAD+ drip causes flushing, cramping and nausea. Slow is comfortable. The nurse sets the rate and slows it further if you feel anything.
Which dose?
Most first-timers choose 250 mg to see how they tolerate it. The nurse will suggest, not sell.
Is it a treatment for anything?
No. Not for ageing, memory, addiction or any condition. Clinics that say otherwise are ahead of the evidence.
Can I work during it?
Yes. Laptop, book, headphones. The chairs recline and the windows face the trees.
The Starting Line · 75 min · $149, credited
Four honest hours in a chair, or a straight answer that you do not need them.
Seventy-five minutes with a nurse practitioner, labs and a body composition reading included, and a written plan to take home.