New — The Peptide Dictionary: 128 terms, explained simply
New guide — NAD+ for Anti-Aging: What the Science Says
New guide — GHK-Cu: the copper peptide for your skin
Not sure where to start? — A 60-second quiz points you to the path that fits your goal
New explainer — Semaglutide: what the research says, made simple
Browse — Peptide guides, made simple
New — The Peptide Dictionary: 128 terms, explained simply
New guide — NAD+ for Anti-Aging: What the Science Says
New guide — GHK-Cu: the copper peptide for your skin
Not sure where to start? — A 60-second quiz points you to the path that fits your goal
New explainer — Semaglutide: what the research says, made simple
Browse — Peptide guides, made simple
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Weight Loss

Start here: GLP-1s for weight loss →

GLP-1 medications, what they cost, and living with them.

Get startedCompare providers27 telehealth providers, scored the same way — price, what's included, and who each one suits.See the comparison →

Sexual Health

Start here: sexual wellness →

ED, low desire, and what the approved options actually are.

Get startedCompare providersSexual wellness providers scored on the same footing — price, format and what's actually included.See the comparison →

Hair Loss

Start here: hair thinning →

Why hair thins, and what has evidence behind it.

Get startedWhat actually worksSix copper peptide serums compared on formula, strength and price.See the comparison →

Hormones

Start here: hormones and aging →

Growth hormone, PCOS, and the peptides people ask about.

Get startedWhat the trials showEvery peptide we cover, with the human trials behind it — or the absence of them.Browse the evidence →

Peptides & Longevity

Start here: what are peptides? →

The molecules, the evidence, and where regulation stands.

Get startedOriginal researchOur own analysis of primary government data — full methodology and datasets published.See the research →

Medications

Start here: every molecule we cover →

One page per medicine — what it is, what it costs, what to expect.

Get startedPeptides A–ZEvery peptide we cover, in one list, with where each one stands.Browse A–Z →
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Best NAD+ supplements of 2026

Six telehealth NAD+ programs our peptides.io editorial team reviewed for clinician oversight, pricing transparency, LegitScript compliance, and dose efficacy. Compounded NAD+ injectables are not FDA-approved — talk to your doctor.

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Common Questions

Where is peptides.io available?
peptides.io is available to users throughout the United States. We feature licensed telehealth providers that collectively operate across all 50 US states. Individual provider and medication availability may vary by state due to differing licensing requirements and state-level telehealth regulations. When you select a provider, that provider's own intake process will confirm eligibility and availability in your state before any consultation or prescription takes place.
What can I expect from NAD+ therapy?
Most users report changes in energy, mental clarity, and sleep within 2–4 weeks. NAD+ is a coenzyme, not a stimulant — effects build with consistent use. Compounded NAD+ has not been evaluated by the FDA for safety or effectiveness. Individual results vary.
Should I choose injectable, sublingual, or nasal NAD+?
Injectable NAD+ delivers the highest bioavailability and is preferred by most providers for therapeutic dosing. Sublingual drops and nasal sprays are needle-free options, with lower per-dose bioavailability — your clinician will recommend a format based on your goals and tolerance.
Is this a subscription?
Yes. Long-term consistency is key for sustained NAD+ benefits. Monthly subscriptions ensure you never run out of medication. You can pause or cancel at any time.
What side effects can NAD+ cause?

NAD+ injections, drops, or nasal sprays can cause side effects. Commonly reported effects include:

  • Nausea (often most pronounced when starting or increasing the dose)
  • Vomiting
  • Diarrhea
  • Constipation
  • Abdominal discomfort
  • Headache
  • Fatigue

These side effects are often most noticeable during the initial weeks of treatment and during dose escalation periods. Many users report that side effects diminish as their body adjusts to the medication through a gradual titration process.