B12
When the question is B12 status
B12 makes sense only when diet pattern, medications, history, or labs make low B12 plausible.
- Route
- Methylcobalamin injection
- Routine
- At-home injection per prescription
Molecule first
Three molecules. Three different jobs.
The practical difference is the ingredient, how you take it, and whether your goal points toward B12 status, cellular energy metabolism, or oxidative-stress support.
Methylcobalamin B12
NAD+
Glutathione
Molecule + job
Active-form B12 — targets B12 status
NAD+ — cellular energy metabolism
Glutathione — oxidative stress
Route + rhythm
At-home injection, per prescription
Injection, nasal spray, or tablet
At-home injection, per prescription
Starting price
As low as $39 $19.50 50% off for your first month. Choose 3 or 12 months.
As low as $109 $54.50 50% off for your first month. Choose 1, 3, or 12 months.
As low as $49 $24.50 50% off for your first month. Choose 1, 3, or 12 months.
NAD+, glutathione, and B12 do different jobs. A provider confirms which one matches your goal — energy, oxidative stress, or B12 status — before prescribing.
Route changes the week
Choose by the job your body needs.
Injection, nasal spray, tablet, and IV-style routines feel different in real life. Start with the ingredient and format you can realistically keep up with.
NAD+
When the question is cellular energy metabolism
NAD+ comes as an injection, nasal spray, or tablet with clinician-set directions.
- Routes
- Injection, nasal, or oral
- Routine
- Schedule set by your clinician
Glutathione
When the question is antioxidant support
Judge glutathione as an antioxidant route, with evidence tied to its molecule, format, and dose.
- Route
- At-home injection, per prescription
- Decision
- At-home injections versus pills or IV appointments
Pick your next page
Pick the next page by the job you need the molecule to do.
This is the fork in the road: B12 status, antioxidant support, or NAD+ route choice. Each card opens the Rebody page for that option, with route, supply, price, and review details.
If B12 is plausible
Start with active-form methylcobalamin B12 and bring diet pattern, medications, history, or recent labs into the visit.
If NAD+ is the category
Choose a route next: an injection, nasal spray, or sublingual tablet with clinician-set directions.
If antioxidant support is the question
Compare glutathione as an at-home injection with clinician-set directions, without turning it into a cleanse or detox promise.
B12, NAD+, or glutathione
Five pages, one clear next step.
The next page should answer a concrete route, supply, and dosing question.
B12 status
Methylcobalamin B12
Active-form B12 injectionAs low as $39 $19.50 50% off for your first month. Choose 3 or 12 months.
For shoppers comparing B12 because diet, medications, history, or labs make B12 status the likely question.
View B12 pathAntioxidant route
Glutathione
At-home injection, per prescriptionAs low as $49 $24.50 50% off for your first month. Choose 1, 3, or 12 months.
For shoppers comparing antioxidant support without IV appointments or vague detox language.
View glutathione pathNAD+ route
NAD+ Injectable
At-home injection, per prescriptionAs low as $109 $54.50 50% off for your first month. Choose 1, 3, or 12 months.
For shoppers who want NAD+ as an at-home injection. Your clinician sets the directions.
View injectable NAD+NAD+ route
NAD+ Nasal Spray
Daily nasal sprayAs low as $139 $69.50 50% off for your first month. Choose 1, 3, or 12 months.
For shoppers who want a needle-free NAD+ route and can keep a quick daily bottle routine.
View nasal NAD+NAD+ route
NAD+ Oral Tablets
Daily sublingual tabletAs low as $124.50 $64.50 48% off for your first month. Choose 1, 2, 3, 6, or 12 months.
For shoppers comparing a daily under-the-tongue NAD+ routine against sprays, injections, or IV visits.
View oral NAD+
Before you choose
The wrong shortcut is treating every option like an energy shot.
B12 starts with B12 status
Diet, medications, history, and labs help show whether B12 belongs in the next visit.
NAD+ works in cellular energy metabolism
NAD+ is involved in cellular energy metabolism. Injection, spray, and tablet options come with different timing, supplies, and refill schedules.
Glutathione supports antioxidant defense
Judge it by the molecule, route, dose, and routine.
Rebody Health / B12 vs NAD+ vs Glutathione
Cellular support / Next visit
Pick the page that matches your molecule.
B12, NAD+, and glutathione lead to different route, supply, and provider-review details. Use the path cards above to pick the page that matches your molecule and routine.
B12NAD+Glutathione
Monthly costfrom$64.50/mo
FSA & HSA eligibleUse eligible benefit funds
Split your payment into interest-free installments with Klarna at checkout.
B12 path for active-form methylcobalamin
Glutathione path for antioxidant support
NAD+ path for injection, nasal, or oral route choice
Price, supply, and routine shown on the next page
Charged today — ships if prescribed. Individual results vary.
Rx only
Medical details checked
Follow-up access
Safety & eligibility
Who can — and can't — take this.
Prescription required
Cellular-support treatment is prescription-only. A licensed provider must approve treatment before anything ships.
Who should avoid it
A provider reviews your goals, health history, medications, preferred route, and whether B12, NAD+, or glutathione is the better next question before prescribing.
Individual results vary
Response differs by person. Follow-up stays open for dose, tolerance, and refill support.