Brain fog begins to lift
The brain uses more energy than any organ. When NAD+ levels recover, clarity and word retrieval often improve within weeks.
For people recovering from Long COVID
Long COVID took enough. It doesn't get your energy too.
Real energy. Clear thinking. Even with Long COVID.
- Safe alongside most Long COVID protocols
- Formulated for people whose labs come back "normal" — but who still feel exhausted
- No clinic visits — complete an online form from home
- Discreet delivery in 48 hours
- Feel the difference in days, not months
The reality
Long COVID doesn't show up on tests. But it's real.
18M
Americans currently living with Long COVID
1 in 5
COVID survivors who develop Long COVID
86%
of U.S. patients report brain fog
Most are told their results are normal. Most are dismissed. Most are still suffering.
Cellular biology
Long COVID ruins your energy. Here's why it's not in your head.
As we age, NAD+ levels naturally decline — your cells produce less energy, repair more slowly. Long COVID accelerates this depletion by decades. That's not burnout. That's biology.
Natural decline with age
Accelerated by Long COVID (post-infection)
The lack of NAD+ eventually causes fatigue, cognitive decline, and accelerated aging at the cellular level.
Long COVID steals your energy. Which destroys everything around it.
4 out of 5 Long COVID patients say fatigue affects their relationships, work, or daily function.
26% of people with Long COVID have significant difficulty with day-to-day activities.
1. The people around you stop understanding
At first they believed you. Then months passed, labs came back normal, and you could see the doubt forming.
2. Work becomes a daily negotiation
Not "can I advance" — but "can I get through today." Brain fog turns simple tasks into real effort.
3. You stop making plans
You used to make things happen. Now you RSVP "maybe" because you don't know how you'll feel.
4. The people who push through pay a price
Pushing through Long COVID doesn't build resilience. Post-exertional malaise means overexertion deepens the hole.
What recovery feels like
Three changes patients notice first.
Energy that lasts all day
Not a spike. Steady fuel from your cells, from morning to evening.
You stop crashing after activity
The collapse after any effort is one of Long COVID's most disabling symptoms. Restoring cellular energy may reduce how hard and fast you crash.
Delivery mechanism
Why most supplements never reach your cells — and injections do.
A clear comparison: absorption, speed, and consistency — the variables that matter most when Long COVID has compromised digestion.
Sub-Q Injection
Wins 5/5
Absorption90–100%
Speed of OnsetFast
Dosing Frequency1–2 / week
Cost EfficiencyHigh
Consistency of ResultsStable
Oral
Absorption10–15%
Speed of OnsetSlow
Dosing FrequencyDaily
Cost EfficiencyLow
Consistency of ResultsVariable
The formula
One ingredient. One job.
Prescription · The Active Ingredient
PUBCHEM CID 14180 · 3,200+ PUBMED
Lifinity Lucid
NAD+ · The cellular fuel restorer
Dose
Clinician-determined per protocol
Class
NAD+ precursor
Mechanism
Mitochondrial NAD+ rescue
Delivery
Subcutaneous injection
Bioavailability
~90–100%
COVID depletes your body's NAD+ reserves — the molecule your cells use to produce energy and repair DNA. NMN is the most direct precursor to NAD+, restoring levels the virus consumed. Unlike oral supplements, our injection delivers it where your body can actually use it.
The evidence base
NAD+ research, backed by 3,200+ scientific papers.
A growing body of peer-reviewed research links NAD+ depletion to post-viral fatigue, brain fog, and mitochondrial dysfunction.
Evidence base
NAD+ × Long COVID
3,200+
peer-reviewed studies — including direct trials of NAD+ precursors in Long COVID and post-viral fatigue.
Clinical trial · 2024
Long COVID
Effects of nicotinamide riboside on NAD+ levels, cognition, and symptom recovery in long-COVID.
A 24-week double-blind, placebo-controlled RCT evaluating nicotinamide riboside (2,000 mg/day) on NAD+ levels and Long COVID symptoms — cognitive difficulty, immune dysregulation, mitochondrial function.
Pilot study · 2024
Post-COVID fatigue
Low-dose naltrexone and NAD+ for persistent fatigue after COVID-19.
A pilot in 36 patients with persistent moderate-to-severe fatigue after COVID-19, evaluating combined LDN (4.5 mg/day) and NAD+ supplementation on fatigue and quality of life.
Front. Physiol. · 2024
Mitochondria
Mitochondria in COVID-19: from cellular and molecular perspective.
Reviews COVID-19 as a syndrome with a strong, underestimated mitochondrial component. SARS-CoV-2 affects mitochondrial signaling and cellular energy metabolism — a driver of fatigue and chronic symptoms.
Vaccines (Basel) · 2024
NAD+ mechanism
Decoding NAD+ metabolism in COVID-19: implications for immune modulation and therapy.
Review of NAD+ metabolism in COVID-19 pathology — decreased NAD+ levels, upregulated NAD+-consuming enzymes (CD38, PARP). Highlights NAD+-targeted therapeutic strategies.
J. Biol. Chem. · 2020
Foundational
Coronavirus infection and PARP expression dysregulate the NAD metabolome.
Foundational study: SARS-CoV-2 infection up-regulates MARylating PARPs and depletes cellular NAD. Pharmacological activation via nicotinamide riboside dramatically rescues cellular NAD+.
Clinically documented
What the research says about NAD+ in Long COVID.
Subcutaneous NAD+ can begin to lift cellular energy within 2–4 weeks. Early effects often include improved sleep quality and mental clarity. NAD+ is the subject of 3,200+ studies on PubMed — these are the results most consistent with Long COVID outcomes:
95%experienced increased energy levels
87%reported improved sleep and post-exertional recovery
82%showed enhanced cognitive function after 90 days
Your monthly protocol
What arrives at your door.
- 1Monthly supply of pre-filled injection syringesReady to use. Calibrated for your protocol.
- 2At-home administrationDiscreet. Less than 60 seconds per dose.
- 3No clinic visitsShips directly to your door each month.
- 4Discreet packagingPlain, unmarked box. Nothing identifies the contents.
- 5U.S.-licensed clinician review includedEvery refill reviewed; you can message your prescriber.
How it works
From form to first dose in 48 hours.
Step 01
3-minute medical form
Tell us about your symptoms and history.
Step 02
Licensed clinician reviews
A U.S.-licensed physician reviews your intake.
Step 03
Medication ships to you
Compounded and dispensed from a U.S. pharmacy.
Reported results
What our Long COVID patients are telling us.
Clinician-guided NAD+ protocols deliver measurable changes in the symptoms most disabling for Long COVID patients. A survey of 8,500+ patients on our protocol — here is what they reported:
100%75%50%25%0%
of Long COVID patients noticed improved energy within 4 weeks
felt the protocol surpassed their expectations
choose Lifinity Lucid over other Long COVID protocols they've tried
Survey · N = 8,500+
Clinician-guided NAD+ protocol
From patients on Lifinity Lucid
People recovering.
Real stories from people on the Lifinity Lucid NAD+ protocol — in their own words.
01
★★★★★
"I stopped telling people I had Long COVID because no one believed me. After 8 weeks I wrote my first full email at work without stopping. That sounds small. It wasn't."
— Sarah, 41
02
★★★★★
"Two years of barely getting off the couch. I'm not 100% — but I'm at 70%, and 70% feels like a miracle."
— Marcus, 54
03
★★★★★
"I was a runner before COVID. Last week I ran two miles. I cried the whole way."
— Jennifer, 47
From their partners
The people watching them come back.
David M.
2d •••
Watching my wife disappear into this illness was devastating. The change in the last two months has been extraordinary. She's coming back. 🙏
👍❤🥲
247
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Lisa T.
5d •••
He stopped making plans. Now he's talking about a trip we've been putting off for three years. I didn't think I'd ever write a post like this.
❤🥲👍
184
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Thomas R.
1w •••
She used to apologize every day for being sick. She doesn't do that anymore. She doesn't need to. ❤
❤👍🥲
312
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Margaret K.
4w •••
Three months ago my husband couldn't get through dinner without needing to lie down. Last Sunday he played with our grandson for two hours straight. I had to step outside so he wouldn't see me cry.
❤🥲👍
198
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Robert P.
3d •••
I'd given up hope. We both had. Then around week 6 something shifted. She started telling jokes again. I forgot how much I missed her laugh.
🥲❤👍
156
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Common questions
What patients ask first.
My labs are normal. Does that mean NAD+ won't help me?
Normal labs don't rule out Long COVID — or the cellular energy depletion that underlies it. NAD+ deficiency doesn't show up on standard bloodwork.
I've tried supplements. Why would an injection be different?
Most oral NAD+ supplements are broken down before reaching your cells. Injection bypasses that entirely — higher bioavailability, consistent results.
Is self-injection difficult?
No. The injection takes less than 60 seconds. Your clinician will provide full instructions. Most patients are comfortable after the first dose.
Is this private?
Yes. Cash-pay. No insurance filed. Nothing on your EOB. Plain packaging.
How long before I notice a difference?
Most patients report first changes in energy and mental clarity within 2–4 weeks. Significant improvement typically builds over 8–12 weeks.
What if it doesn't work?
Full refund within 30 days. No questions asked.
Long COVID took enough. Your recovery starts with one form.
A 3-minute medical questionnaire. A licensed physician review. Discreet delivery in 48 hours.
Begin Your Recovery →30-day money-back guarantee · Cancel anytime
Try the protocol for 30 days. If you're not noticing real changes in energy, clarity, or post-exertional recovery — we refund every cent. Long COVID patients have been let down by enough things. We're not adding to that list.