What Is Camu Camu? An Honest Look at the Amazon's Vitamin C Berry

May 30, 2026

Walk through a market in Iquitos in February, and you will spot piles of small reddish-purple berries the size of a grape. Locals call them camu camu. The fruit is so sour it puckers your face like a lemon left out in the rain, but it is also one of the most concentrated natural sources of vitamin C on the planet.

That second part is why camu camu (Myrciaria dubia) made the jump from the flooded forests of the Peruvian Amazon to wellness shelves in Los Angeles and Tokyo. We sell it. We also want to be straight with you about what it actually does and where the marketing gets ahead of the evidence.

Where the plant comes from

Camu camu trees grow along the blackwater rivers and lakes of Loreto, Peru's largest Amazon region. When the rains come, the lower trunks sit underwater for months. The trees adapted by producing a berry that ripens just as the waters recede, which means most harvesting happens from canoes. Pickers slap the branches with poles and catch the falling fruit in nets stretched across the boat.

This matters for one practical reason: camu camu is hard to cultivate at scale outside the Amazon. The vast majority of the world's supply still comes from wild and semi-wild stands in Peru and a few areas of Brazil. When you buy a bottle, you are buying a fruit that mostly cannot be grown on a flat farm in California.

The vitamin C question

Here is the claim you have probably seen: camu camu contains 30 to 60 times more vitamin C than an orange. That number is real. Fresh camu camu pulp tests at roughly 2,000 to 3,000 milligrams of ascorbic acid per 100 grams of fruit, depending on ripeness and growing conditions. An orange clocks in around 53 milligrams per 100 grams.

But there is a catch worth mentioning. Most of that vitamin C lives in the fresh, just-picked pulp. Processing into a powder or capsule, which requires drying the fruit, drops the ascorbic acid content. A reputable camu camu powder typically delivers around 10 to 15 percent vitamin C by weight. Our capsules are standardized to give you a meaningful daily dose without the sticker-shock yields you sometimes see on marketing copy.

The other point: your body can only absorb so much vitamin C at once. Studies on ascorbic acid absorption suggest that anything above roughly 200 milligrams in a single sitting gets diminishing returns. So whether your vitamin C comes from camu camu, an orange, or a synthetic tablet, more is not always more.

What camu camu has that synthetic vitamin C does not

This is where camu camu earns its place. The fresh fruit contains a small but interesting collection of plant compounds alongside the ascorbic acid: polyphenols, anthocyanins, ellagic acid, and carotenoids. A 2012 study in the Journal of Cardiology compared a daily dose of camu camu juice against an equivalent dose of synthetic vitamin C in healthy male smokers. The camu camu group showed lower markers of oxidative stress and inflammation. The synthetic vitamin C group did not.

That is one small study. It is not enough to claim camu camu cures anything. But it suggests the whole fruit may behave differently in the body than isolated ascorbic acid, which is consistent with what nutritionists have argued for decades about food versus pills.

How people in Peru actually use it

In Loreto, camu camu is not really treated as a supplement. People drink it as a juice, usually mixed with sugar or another fruit because the raw pulp is too sour to enjoy on its own. Refresco de camu camu shows up at family lunches and roadside stands. It is hydration with a side of something good for you, not a daily pill.

When we source for our capsules, we work with cooperatives in the Loreto region that harvest from wild stands and use a low-temperature drying process to preserve as much of the original nutrient profile as possible. The fruit goes from the canoe to the dehydrator within a day or two.

Who might want to try it

Camu camu is reasonable to consider if you want a whole-food vitamin C source rather than a synthetic one, you are looking for general immune and antioxidant support during travel or stress, or you eat a low-fruit diet and want to fill that gap. If you are already eating a few servings of bright-colored produce a day, you are probably getting plenty of vitamin C from your meals and the marginal benefit of a supplement is smaller.

Cautions

Camu camu is well-tolerated, but a few things to keep in mind. Very high doses of vitamin C (well above what you would get from a normal serving) can cause loose stools and stomach upset. If you take blood thinners, ask your doctor; vitamin C can affect how some of those medications work. And if you have a history of kidney stones, talk to your provider before taking concentrated vitamin C supplements long-term.

We are not doctors. The above is general guidance, not medical advice for your specific situation.

If you want to add other Amazonian herbs to your routine, our full catalog includes Cat's Claw for immune and joint support and Graviola, another rainforest staple. For a sour citrus comparison from the Andes, our Maca isn't acidic but pairs well with camu camu in a morning smoothie.