Every molecule, explained

What's actually in it.

A plain-English reference for every molecule behind Feel20's physician-guided programs — what each one is, what it's studied for, and how it's typically delivered. No hype, no promises, and a licensed provider deciding what's right for you.

Start your free eligibility check Start with GLP-1

How to read this page.

Each molecule below is one we use in a Feel20 program. Here's the standard every card is held to — and the part other sites bury.

“Studied for,” never “proven to”

We describe what research has examined — not outcomes we can guarantee. Individual results vary, and these aren't promises.

A provider decides — every time

Nothing here is sold off a shelf. Whether any molecule is right for you is a US-licensed provider's call after a consultation.

The FDA caveat, said out loud

Compounded medications are not FDA-approved, though the pharmacies that prepare them are licensed and regulated. We say it up front.

Start here · the anchor

The GLP-1 molecules.

GLP-1 receptor agonists are the medicine behind the weight-care results you've been hearing about — and the anchor of what we do. Both are prescribed, dosed, and adjusted by a licensed provider.

GLP-1 Weight CareGLP-1 anchor

Semaglutide

a GLP-1 receptor agonist

What it is: A GLP-1 receptor agonist — it copies a hormone your gut releases after you eat, the signal that tells your brain you're satisfied and helps your body manage blood sugar.
What it's studied for: Studied for its effect on appetite signaling, slowed gastric emptying, and blood-sugar regulation. It is among the most-studied molecules in modern metabolic medicine.
How it's typically delivered: Typically a once-weekly self-administered injection, started low and titrated upward over time by your provider. The exact dose and schedule are determined by your provider — not by you.

Compounded medications are not FDA-approved. A US-licensed provider decides whether Semaglutide is right for you.

See the GLP-1 Weight Care program

GLP-1 Weight CareGLP-1 anchor

Tirzepatide

a dual GIP / GLP-1 receptor agonist

What it is: A dual-receptor agonist that acts on both the GIP and GLP-1 pathways — two of the gut hormones involved in fullness and how your body handles glucose.
What it's studied for: Studied for its effect on appetite, fullness, and blood-sugar control through those two hormonal pathways. Like semaglutide, it sits among the most-studied molecules in metabolic medicine.
How it's typically delivered: Typically a once-weekly self-administered injection, started low and titrated by your provider to balance results against side effects. Your provider determines dosing.

Compounded medications are not FDA-approved. A US-licensed provider decides whether Tirzepatide is right for you.

See the GLP-1 Weight Care program

The rest of the toolkit.

Beyond GLP-1, these molecules round out Feel20's energy, sleep, and confidence programs. Each is studied for a specific job, and each runs through a licensed provider who decides whether it fits you.

NAD+ & B12 Energy

NAD+

nicotinamide adenine dinucleotide

What it is: A coenzyme your mitochondria use to turn food into usable energy. It's central to cellular energy production, and natural levels decline as you age.
What it's studied for: Studied for its role in cellular energy metabolism and for supporting the machinery behind everyday stamina as natural levels fall with age. Research is ongoing and individual experience varies.
How it's typically delivered: May be delivered by injection on a regular schedule. The route, dose, and cadence are determined by your provider based on your history and goals — this is physician-guided, not self-dosed.

Compounded medications are not FDA-approved. A US-licensed provider decides whether NAD+ is right for you.

See the NAD+ & B12 Energy program

NAD+ & B12 Energy

B12

MIC-B12, a metabolic cofactor

What it is: A metabolic cofactor that supports red-blood-cell formation and neurological function tied to energy and mental clarity.
What it's studied for: Studied for its role in energy metabolism and neurological function. Paired with NAD+, it rounds out a physician-guided approach to everyday energy — not an energy drink.
How it's typically delivered: Often delivered by injection on a regular schedule set by your provider. Route, dose, and frequency are your provider's call.

Compounded medications are not FDA-approved. A US-licensed provider decides whether B12 is right for you.

See the NAD+ & B12 Energy program

Sermorelin Sleep & Recovery

Sermorelin

a growth-hormone-releasing-hormone analog

What it is: A growth-hormone-releasing-hormone analog. Rather than replacing growth hormone, it prompts your own pituitary to release it — working with a rhythm your body already runs.
What it's studied for: Studied for its role in the body's own growth-hormone rhythm, which peaks during deep sleep, and for the overnight repair behind restorative rest and recovery. Research is ongoing; individual experience varies.
How it's typically delivered: Typically a nightly injection taken to work with your body's natural overnight rhythm. The starting dose and schedule are set and monitored by your provider.

Compounded medications are not FDA-approved. A US-licensed provider decides whether Sermorelin is right for you.

See the Sermorelin Sleep & Recovery program

Intimacy & Glow

PT-141

bremelanotide

What it is: A melanocortin-receptor activator that acts on desire centrally — in the brain, where wanting begins — rather than through blood flow.
What it's studied for: Studied for its action on desire through central melanocortin pathways. Research is ongoing and individual experience varies. It is physician-prescribed.
How it's typically delivered: Typically used as needed ahead of intimacy. Whether it fits you, plus dosing and timing, are decided privately by your provider.

Compounded medications are not FDA-approved. A US-licensed provider decides whether PT-141 is right for you.

See the Intimacy & Glow program

Intimacy & Glow

Glutathione

the body's master antioxidant

What it is: The body's primary intracellular antioxidant — a molecule your cells use for defense and detoxification processes.
What it's studied for: Studied as the body's primary intracellular antioxidant, including for skin brightness and cellular defense. Research is ongoing and individual experience varies.
How it's typically delivered: May follow a regular schedule. The route, dose, and cadence are determined by your provider, and it ships in discreet packaging.

Compounded medications are not FDA-approved. A US-licensed provider decides whether Glutathione is right for you.

See the Intimacy & Glow program

Illustrative visual — not one of our providers.

A licensed provider decides — every time

Why this list is short.

You'll notice this page is short and specific. That's deliberate. Our programs anchor on GLP-1 and a focused set of molecules a provider prescribes inside a clear, physician-guided plan — the ones above.

It isn't the whole universe of what a provider can prescribe. If yours recommends something specific, there's a wider, physician-gated menu — every molecule on it still gated behind a US-licensed provider who decides whether it's right for you. What we won't do is lead with a trend-chasing list or push a molecule no clinician stands behind.

GLP-1 anchors the programs — the focused set above
A wider physician-gated menu, if your provider recommends it

See the full physician-gated menu

Not sure which one is for you?

You don't have to be. The free eligibility check takes 5 minutes, and a real provider decides which molecule — if any — is right for your body.

Start your free eligibility check

Free to apply · Prescription only if a licensed provider approves · Cancel anytime

Feel20 is a wellness brand, not a medical group or pharmacy. Medical care is provided by independent, US-licensed healthcare providers, and medications are dispensed by licensed US pharmacies.

Prescription medication is available only if a licensed provider determines it is appropriate for you after a consultation. Not everyone qualifies.

Compounded medications are prepared by state-licensed compounding pharmacies and are not FDA-approved. Your provider will discuss the benefits and risks with you.

Individual results vary. “Feel 20 again” describes how our members want to feel — it is not a promise of any specific medical outcome.