Onday vs AG1 (Athletic Greens), Which One Should You Choose?

It's an exciting showdown in the world of wellness!

On one side: AG1, the historic giant from the United States. On the other: our vision at Onday, high-precision nutrition, designed and made in France.

On paper, our two formulas share the same goal: bringing your wellbeing together in a single glass a day.

Yet as soon as you lift the lid, we chose to take a radically different direction.

Choice of active ingredients, dosages, absorption, manufacturing standards... we put both compositions under the microscope to help you understand what sets us apart.

1. The Formula: an Ingredient Race vs Total Transparency

At first glance, AG1 is impressive: over 70 ingredients. But look closer, and this long list hides a precise scientific reality:

• The dilution trap: adding more ingredients makes for a longer label, but it's often at the expense of efficacy. Many active ingredients are present in tiny amounts, far too low to have any real impact on the body. At Onday, we prefer efficacy: 43 essential ingredients, working in synergy. Justified, intelligent choices.
• The opacity of "proprietary blends": to mask these under-dosed amounts, AG1 groups its ingredients under generic "proprietary blend" labels, whose exact dosages remain completely opaque. We, on the other hand, believe in absolute transparency: 100% of our dosages and forms are displayed on our label and on our website. You have the right to know exactly what you're putting in your body.

2. Choice of Ingredients: Essentials vs Controversial Ingredients

This abundance at AG1 hides some grey areas. It includes mushroom complexes (like reishi or shiitake) on which science still lacks long-term perspective for overall daily consumption, but also, and above all: iron.

Blindly adding iron to a mass-market formula is strongly discouraged by health professionals, since excess iron is pro-oxidant and can be very harmful to the body if you're not actually deficient.

At Onday, your health comes before any trend.

• 100% of our active ingredients are science-backed: every ingredient, every plant, every vitamin in our formula is rigorously grounded in European scientific literature and research, with proven benefits for the body.
• Total safety: we exclude controversial or heavy-handed active ingredients to guarantee a clean, healthy formula you can take with total confidence every day.

3. The Dosage Match: the American Overdosing Trap

This is the biggest philosophical difference between the two brands. AG1 bets on the sensational with massive dosages, sometimes climbing above 1000% of the Reference Nutrient Values (RNV) for certain vitamins.

• The metabolic cost: contrary to popular belief, "more" doesn't mean "better". The human body has absorption limits. When you saturate your system with megadoses, your kidneys and liver have to work twice as hard to eliminate the excess through urine. Over the long run, this metabolic waste can tire out your digestive system.
• Onday's physiological approach: we dose all our nutrients between 50% and 100% of the RNV. Why? To work in harmony with your daily diet, close real deficiencies without ever overwhelming your metabolism or creating unnecessary overload.

4. Absorption: the War of the Intestinal Transporters

Cramming too many ingredients into a single scoop creates what science calls absorption competition. Standard minerals fight for the same intestinal transporters (for example, excess calcium can block magnesium absorption). The result? A large part of the formula is never actually absorbed.

That's why, at Onday, we made the exclusive choice of premium active ingredients and highly absorbable forms:

• Our vitamin B9 is in the patented 5-MTHF form (directly active, unlike standard folic acid)
• Our magnesium and zinc are in bisglycinate form, which lets them pass through the intestine without competition and without any digestive discomfort

5. Origin: Local vs International

• AG1 crosses oceans: the formula is designed in the USA but mostly manufactured in New Zealand, before crossing oceans to reach you in Europe. And to store this powder daily, the brand has you keep it in large plastic tubs.
• Onday chooses short supply chains: our formula is designed, sourced and manufactured in France. Our plants come from organic farming, and our iconic jar with its oak lid is designed to proudly sit on your kitchen counter and last for years!

Let's Recap

The Verdict: Which One to Choose?

If you prefer French scientific precision, respect for your digestive system, high-quality ingredients, total transparency about what you're absorbing, all at a fair price, Onday was designed for you!

Discover!