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Longevity

Clinician-reviewed articles on treatments, costs, and what to expect — so you can make informed decisions at every step.

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Adult people discussing B12 dosage
Longevity4 min readFact Checked

Vitamin B12 Dosage: How Much Can You Take per Day?

Vitamin B12 (cobalamin) helps your body make DNA, form healthy red blood cells, and keep nerves working. Low B12 can cause megaloblastic anemia and neurologic symptoms. People typically get B12 from animal foods or fortified foods; supplements are available if diet or absorption is an issue. For fundamentals, see the NIH Office of Dietary Supplements consumer fact sheet and the family‑medicine review on vitamin B12 deficiency.

A photo of a doctor giving a patient MIC B-12 injection
Longevity8 min readFact Checked

MIC B12 Benefits: What to Know About MIC B12 Injections, Ingredients, and Evidence

MIC B12 typically refers to an injectable blend of vitamin B12 plus methionine, inositol, and choline (MIC), although exact formulations can vary by provider. If you’re researching MIC B12 benefits, you’ll quickly run into big claims about energy, metabolism, and “fat burning.” Some of what’s said online is grounded in real nutrition science, especially around vitamin B12 deficiency, but many claims about MIC blends go beyond what high-quality evidence can currently support.

Doctor preparing a NAD+ injection
Longevity7 min readFact Checked

How Often Should You Get NAD Injections?

If you’re asking how often should you get nad injections, the most accurate answer is: there isn’t one universally accepted, evidence-based schedule. NAD+ (nicotinamide adenine dinucleotide) is a molecule found in every cell and involved in energy metabolism and many signaling pathways. Some clinics offer NAD as injections or IV infusions for “wellness” goals, but dosing and frequency are not standardized the way many prescription therapies are.

Doctor consulting patient about b12
Longevity12 min readFact Checked

Vitamin B12 Benefits And Side Effects

Vitamin B12 supports red blood cell formation, normal nerve function, and DNA synthesis. Its clearest benefits are seen when a deficiency is corrected; taking extra B12 when levels are already adequate has not been shown to provide the same broad energy or performance benefits often claimed in supplement marketing.

Photo of a man before and after NAD supplement
Longevity10 min readFact Checked

NAD Supplement Before and After: Transformative NAD Results You Can Expect

NAD, or nicotinamide adenine dinucleotide, is a coenzyme found in every living cell that helps convert nutrients into energy and supports hundreds of reactions involved in repair and resilience. When people talk about “NAD supplement before and after,” they’re usually comparing how they feel and function—energy, focus, recovery—before supporting NAD levels versus after several weeks of consistent use.

NMN vs NAD
Longevity11 min readFact Checked

NMN vs NAD: Which Supplement Makes More Sense for Healthy Aging?

NMN and NAD+ are closely related, but they are not the same thing. NAD+ is a coenzyme your cells use directly in energy metabolism, DNA repair, and cellular signaling, while NMN is a precursor that the body converts into NAD+. In practice, the NMN vs NAD question usually compares an oral NMN supplement with direct NAD+ products such as infusions. NMN is easier to take and has more human research behind oral use, while evidence for direct NAD+ therapy remains more limited.

Photo of a woman before and after using B12 injections
Longevity5 min readFact Checked

MIC B12 Injections Before & After: What to Expect in 1 Week & 1 Month

“MIC B12” is a shorthand for compounded lipotropic injections that combine methionine, inositol, and choline with vitamin B12. The “MIC” nutrients are included for roles in methylation and hepatic lipid handling, while B12 (cobalamin) supports red-blood-cell formation and one-carbon metabolism; for neutral grounding on indications and biology, see Vitamin B12 — Health Professional Fact Sheet, which outlines deficiency care and dosing context for clinicians. These references make clear that B12 therapy is primarily about treating deficiency, not directly burning fat.

Can you take NAD while pregnant?
Longevity16 min readFact Checked

Can you take NAD while pregnant?

NAD+ supplements, injections, and IV infusions should not be considered established-safe treatments during pregnancy. Before starting one, or continuing a product you already use, have your prenatal clinician review the exact ingredients and reason for taking it. There is not enough pregnancy-specific evidence to recommend NAD products for routine energy, wellness, or fertility support.

Can men take NAD?
Longevity16 min readFact Checked

Can men take NAD?

Yes, men can take NAD-related products; being male alone is not a reason to avoid them. However, whether a particular product is appropriate depends on its ingredients, how it is given, your health history, and what you hope it will accomplish.

Can you take NAD and collagen together?
Longevity16 min readFact Checked

Can you take NAD and collagen together?

Taking an oral NAD-related supplement and oral collagen together may be reasonable for some adults, but the combination has not been studied well enough to call it universally safe or beneficial. There is no well-established direct interaction between plain collagen and NAD-related supplements, but that does not rule out problems with a particular product, added ingredients, or your medical history.

What is the best way to take NAD?
Longevity15 min readFact Checked

What is the best way to take NAD?

There is no proven best way to take NAD for general wellness, energy, or anti-aging. Oral supplements, injections, and IV infusions differ in convenience and risk, but faster delivery into the bloodstream does not establish better health outcomes.

Can I take NAD and NAC together?
Longevity15 min readFact Checked

Can I take NAD and NAC together?

Taking NAC with an oral NAD-related product may be reasonable for some adults, but there is not enough evidence to give the combination a blanket safety recommendation. The answer depends on what your "NAD" product contains, how you use it, your medications, and your health history. Taking the two together also has not been established as more beneficial than taking either one alone.

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