Start hereEveryday nutritional support.*

Feel betterthrough yourGLP-1 journey.
Research-based nutrition support for the gaps that eating less can leave in nutrition, hydration, and digestion.
Our core products
Where most routines start.
Most reported: Nausea · Constipation · Diarrhea · Bloating
John Wilding et al.
University of Liverpool · N Engl J Med 2021
STEP 1 trial. GI events were also common with placebo; most were mild and transient. Read the study
Why it matters
What DUO does
Your GLP-1 does one job. DUO supports the rest, so you don't have to figure it all out yourself.Your GLP-1 does one job. DUO supports the rest: nutrition, digestion, hydration and your weight-management routine, so you don't have to figure it all out yourself.
One daily foundation for the nutrients that fall short when you eat less.
Learn more about Daily Essential
$125.60/mo
All four areas covered: DUO Daily Essential, Gut Support, Daily Hydration and Metabolic Support. The lowest-priced one is on us.
Or add what you need.
Pick support for the areas that fit your journey.

Start here
Start with the essential, add what you need. Your everyday foundation, then the support that fits your journey.
Why a daily foundation
Four medical societies jointly published nutrition priorities for people on GLP-1 medications, including micronutrients and protein, and noted most patients don't receive adequate nutrition support.
The complete routine · Best value
DUO Daily Essential plus Gut, Weight and Hydration, chosen to work together. Get all four and the lowest-priced one is on us, every month.

What's inside
4 products
DUO Daily Essential
Essentials · Everyday nutritional support.*
$59.00
Gut Support
Gut · Daily digestion support.*
$46.00
FREE
Daily Hydration · Peach Mango
Hydration · Electrolytes for everyday hydration.*
$48.00
Metabolic Support
· Daily support for your progress.*
$50.00
Prefer to start smaller? Start with Daily Essential
01 · Essentials
Micronutrients
When you're eating less, the basics get harder to cover.
02 · Gut
Digestion + enzymes
Digestion commonly changes during GLP-1 treatment.
03 · Hydration
Fluids + electrolytes
About 20% of daily fluid usually comes from food.
04 · Weight
Daily metabolic support
A botanical blend, taken alongside the rest.
From research to routine
One published study for each area of support, and the DUO product built around it.
13.6%
of GLP-1 users were vitamin D deficient at 12 months — nearly double the rate at 6 months.
Clin Obes · 2026 · Review, 480,825 adults · Read

74%
of adults in a semaglutide trial reported digestive side effects.
N Engl J Med · 2021 · STEP 1 trial · Read

~20%
of the water you take in each day normally comes from food. Eat less, and that share shrinks.
National Academies · 2005 · Dietary Reference Intakes · Read

~30%
of weight lost on GLP-1 therapy came from lean mass, not fat.
Obesity · 2025 · Meta-analysis, 7 RCTs · Read

Studies describe intake and body composition in general or GLP-1 populations. They were not conducted on DUO products, and DUO is not affiliated with these publishers or authors. * These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Shop by need
Your GLP-1 journey can affect more than your appetite. Start with the need that fits you.

A reduced appetite can mean fewer chances to get the nutrients your body needs.
DUO Daily Essential
$47.20/mo
Research: 13.6% of GLP-1 users were vitamin D deficient at 12 months. Read
Shop essentials

Eating and drinking patterns can change. Fluids and electrolytes, made easy.
Daily Hydration
$38.40/mo
Research: About 20% of daily fluid normally comes from food. Read
Shop hydration
Nutrition, movement, and sustainable habits still matter.
Creatine + Hydration
$46.40/mo
Research: Trials report a notable share of weight lost is lean mass. Read
Shop weightWhy you can trust DUO
No hidden claims. Every claim on the bottle traces back to something you can check.
Full Supplement Facts on every product page.
View ingredientsIngredients from established manufacturing partners.
Learn more
Made in FDA-registered US facilities.
Our standardsTested for identity, potency and contaminants.
Quality & testing
DUO products are dietary supplements, not medications. FDA registration does not mean FDA has tested or approved these products.
Built by a family that's been through it. Read our story
Learn
The research, made digestible. Every article lists its sources.

Essentials
Smaller portions can mean fewer vitamins and minerals. Here's which ones matter most.

Gut
How fiber, fluids, and everyday habits support regularity and comfort.

Hydration
Eating and drinking less can reduce fluid and electrolyte intake.

Weight
Why creatine and simple daily habits matter while the number drops.
BETTER
TOGETHER.