You’ve made the smoothie greener, added a spoonful of spirulina, and ticked “healthy breakfast” off your list. But does that take care of vitamin B12 too? Don’t count on it. Spirulina and a dependable B12 source are two separate things to plan for.

That doesn’t make spirulina a bad ingredient. It just means a green powder shouldn’t get a job on your shopping list that its label and evidence don’t support.

There’s a catch behind the B12 headlines

Here’s the slightly nerdy part, in plain English: not every compound that looks like B12 in a test does the same job in your body. Researchers studying spirulina tablets found that a compound called pseudovitamin B12 was the predominant form. Their results also showed why the testing method matters when measuring B12-like compounds. You can read the original study by Watanabe and colleagues.

That study wasn’t a test of today’s AimGrow products. It does explain why a general “spirulina contains B vitamins” headline isn’t enough to build a B12 plan around. “Contains something measured as B12” and “reliably meets my B12 needs” are different claims.

Read the specific nutrient, not the green-food promise

When you’re shopping for B12, look for vitamin B12 itself and the amount provided by the stated serving. A product’s green color, organic wording or long nutrient list won’t answer that question for you.

The NIH consumer guide explains that some cereals, nutritional yeasts and other foods have added B12. Check the label: not every plant drink, cereal or nutritional yeast is fortified. B12 supplements are another source, and their amounts vary too.

Think of this as a quick shopping check: “What is my actual B12 source?” If you can only answer “my green smoothie,” it’s time to look more closely.

So where does spirulina fit?

If you enjoy AimGrow Organic Spirulina Powder in the 454g pack, use it for the ingredient you chose, following the package directions. You can enjoy its character in food without treating it as a replacement for every other part of your diet.

Keep two decisions separate: whether you like spirulina in breakfast, and how you get enough B12. There’s no need to force one product to answer both. The same goes for switching to a bright blue extract—changing color isn’t a B12 strategy.

Make the B12 part a little more deliberate

NIH notes that people eating little or no animal foods may not get enough B12. If that’s you, check your regular fortified foods and discuss an appropriate supplement plan with a dietitian or healthcare professional. If you already have a prescribed B12 treatment, don’t swap it for an algae powder.

You can keep the smoothie. Just give B12 its own place on the checklist.