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Nine good things,one little bottle.Daily supplements, made in the USA

Daily supplements for immunity, digestion and everyday energy. Made in the USA, with every milligram printed on the label.

Every milligram printedMade in the USAShips to 37 countries
A bottle of Moat daily immune defense on a stone pedestal, in front of green diamond-pattern tiles, with elderflowers and elderberries
Made in the USAFDA-registered facilityGMP certifiedEvery dose printedNine good thingsThird-party tested

Nearly everyone, and almost nobody.

The NHS asks everyone in the UK to consider a vitamin D supplement from October to March, because there is not enough sun to make your own. By the end of winter about one in six adults is properly deficient. Most of us still do nothing about it.

1 in 6Deficient by late winter

Every dot is one adult. The dark ones are below the level the UK counts as deficient. The pale ones are still being told to top up. Moat is nine of those top-ups on one label, so it is one thing to remember instead of nine.

Source: NHS vitamin D guidance and the National Diet and Nutrition Survey.

  • Vitamin C180 mg
  • Vitamin D340 mcg
  • Vitamin E15 mg
  • Vitamin B61.7 mg
  • Zinc11 mg
  • Elderberry Extract500 mg
  • Echinacea purpurea Extract200 mg
  • Citrus Bioflavonoids100 mg
  • L-Lysine100 mg

All nine, printed per two-capsule serving.

What we make right now.

Small on purpose. A handful of formulas we are properly fond of, rather than a whole shelf of them.

Knurle Moat · Daily Immune Defense · Per two-capsule serving

Here it is, drawn to scale.

Every dose in the bottle, drawn against the biggest one. The few with no official Daily Value are marked as such, which is paperwork rather than mystery.

Ingredient — per 2 caps% Daily Value
Plus — no daily value

Three things every formula has to do.

A tiny checklist that decides whether an idea ever gets its own bottle.

01

Every dose, printed

Every milligram sits right next to its ingredient, in plain readable numbers. No squinting, no maths.

02

Studies, in plain English

We read the papers behind every ingredient and write them up in words a person can hold onto before coffee.

03

Made in the USA

Blended in FDA-registered, GMP-certified facilities, then packed and posted from a small corner of Colorado.

How ordering works.

Two capsules in an open palm on a green table, laid out with breakfast things
Step 01 · Read the whole label first

Read the whole label first

Every dose sits on the product page before you buy, milligrams and all, so you can read the whole thing with a cup of tea first.

Tap any ingredient for its milligrams, its %DV and the study behind it. No pop-ups, promise.

4.1 out of 5, from people who actually bought it.

77% would recommend it · 30 reviews

Every review we have, gathered in one place. Have a scroll.

★★★★★Verified

Replaced 4 separate bottles on my counter!

I used to take separate vitamin C, D3, zinc picolinate, and elderberry gummies every single morning. MOAT consolidates everything into two daily capsules with zero hassle. My supplement drawer is finally decluttered, and the ingredient balance is spot on.

Marcus Vance42 helpful
★★★★★Verified

P-5-P active B6 and Zinc Citrate show serious formulation thought

As someone who checks supplement labels rigorously, I was thrilled to see pyridoxal 5'-phosphate (P-5-P) for B6 and zinc citrate instead of cheap pyridoxine HCl and zinc oxide. The 500mg elderberry extract combined with bioflavonoids provides genuine synergy.

Dr. Elena Rostova38 helpful
★★★★★Verified

Essential companion for frequent business travel

I fly domestically twice a week and spend countless hours in airports and crowded train carriages. Keeping MOAT in my carry-on has become my non-negotiable routine. Two capsules with breakfast water and I feel well-defended against travel fatigue.

David Chen24 helpful
★★★★★Verified

A kindergarten teacher's daily armor

Working in a classroom with thirty 5-year-olds means you are exposed to every cough and sneeze imaginable. I've taken MOAT consistently for three months throughout the fall semester and have maintained my energy and wellness straight through. Highly recommend.

Sarah Jenkins31 helpful
★★★★★Verified

Zero herbal burps or synthetic aftertaste

Many botanical blends give me unpleasant herbal repeating or acid reflux but MOAT goes down smooth with zero aftertaste. The capsules are easy to swallow with a standard glass of water.

Liam Thorne16 helpful
★★★★★Verified

Clean formulation without synthetic excipients

Love that Knurle uses brown rice flour instead of magnesium stearate, artificial colorings, or titanium dioxide. It feels like a clean, pure product manufactured to high standards in the USA.

Chloe Bennett22 helpful
★★★★★Verified

Elderberry benefits without 15g of gummy sugar

I wanted the immune benefits of Sambucus nigra elderberry, but couldn't stand the sugar and syrups in commercial elderberry gummies. MOAT delivers a full 500mg extract in pure capsule form without adding empty calories.

Kevin Patel19 helpful
★★★★★Verified

Consistent defense for night shift healthcare workers

Working 12-hour rotating night shifts in the hospital wrecks your circadian rhythm and immune reserves. Taking MOAT with my first meal of the shift keeps my daily nutrient base covered effortlessly.

Hannah O'Connor27 helpful
★★★★★Verified

Great addition of L-Lysine and citrus bioflavonoids

Most immune blends only include Vitamin C and Zinc. The addition of 100mg L-Lysine and citrus bioflavonoids makes a real difference when managing daily stress and cellular defense. Thoughtful formulation.

Rachel Miller14 helpful
★★★★★Verified

Smooth capsules, no horse pills here

I normally struggle with swallowing large multivitamin tablets but these two standard-sized gelatin capsules go down very easily with water. No dry throat or sticking.

Arthur Pendelton11 helpful
★★★★★Verified

Household staple for the entire winter season

Both my husband and I take two capsules every morning alongside our breakfast. We used to catch whatever was going around the office but staying consistent with MOAT has kept us feeling resilient all season.

Sophie Taylor18 helpful
★★★★★Verified

Keeps me healthy through grueling marathon training blocks

When running 60+ miles a week your body is under heavy physical stress and your immune system can dip. Adding MOAT to my morning recovery stack has kept me consistent and training without unexpected interruptions.

Derek Reynolds15 helpful

What you will not find in there.

A short list, mostly so you do not have to go hunting for it on the back of the bottle.

  • Proprietary blends

    Every milligram gets its own line on the label.

  • Sugar syrup

    The elderberry is a 500 mg extract, tucked into a capsule.

  • A very long ingredient list

    Nine things, each with a job to do.

  • Claims with no study behind them

    If there is no paper, it does not go on the bottle.

Moat, Keel and Spark on a green table with elderflower, ginger and grapes

Still wondering whether you need any of this?

Six questions about daylight, dinner and what is already on your shelf. It takes a minute, and it is quite happy to tell you that you are already sorted.

Pick a system, not just a bottle.

Two bottles 10% off, any three 15% off. The discount turns up on its own in the cart, no code needed.

Moat and Keel tied together with a green ribbon

Daily Foundation

Most popular

Moat + Keel

Moat + Keel — the two daily drivers, immune + digestive

$80.91$89.90

Save $8.99 (10%) · $2.70 a day

What's inside

Discount applies at checkout. No code needed.

Keel and Spark tied together with a green ribbon

The Longevity Stack

Keel + Spark

Keel + Spark — daily comfort + NAD support

$103.50$115.00

Save $11.50 (10%) · $3.45 a day

What's inside

Discount applies at checkout. No code needed.

Moat, Keel and Spark tied together with a green ribbon

The Full Routine

Best value

Moat + Keel + Spark

Moat + Keel + Spark — the whole system, one habit

$123.16$144.90

Save $21.74 (15%) · $4.11 a day

What's inside

Discount applies at checkout. No code needed.

three little bottles

Start with the one that sounds like you.

A month in a bottle, every dose printed on the label, and free US shipping once you spend $50.