Vitamin C is one of those nutrients that feels “basic” until you’re not getting enough—and then your body makes it loud. At NuBloom, we love vitamin C because it sits at the crossroads of everyday wellness: it supports immune function, helps your body make collagen (hello, skin and joints), and even improves absorption of plant-based iron. The catch? Your body doesn’t make vitamin C on its own, and it doesn’t store much of it either—so consistency matters. The goal isn’t mega-dosing. It’s getting enough vitamin C most days, in a way that fits real life.
Vitamin C (ascorbic acid) is an antioxidant and an essential cofactor in several enzymatic reactions. The “NuBloom translation” is this: vitamin C helps protect cells from oxidative stress, supports immune defense, and plays a key role in collagen formation—important for skin, gums, blood vessels, cartilage, and wound healing.
It also helps your body absorb non-heme iron (the type found in plant foods like beans, lentils, spinach, and fortified grains). Pairing vitamin C-rich foods with iron-rich plant foods is one of the simplest nutrition upgrades you can make—especially if you eat mostly plant-based or struggle with low iron.
Most adults need a relatively modest daily amount:
If you smoke, your needs are higher—an additional 35 mg/day is recommended, because smoking increases oxidative stress and depletes vitamin C.
Also important: more is not always better. The Tolerable Upper Intake Level (UL) for adults is 2,000 mg/day, mainly due to risk of GI side effects (like diarrhea) and other concerns for some individuals.
Severe deficiency can lead to scurvy, which is rare but still occurs—especially in people with very limited fruit/vegetable intake or certain medical and lifestyle risks. Symptoms can include fatigue, gum changes/bleeding, easy bruising, and poor wound healing.
More commonly, “not enough vitamin C” shows up as a diet pattern: low produce, frequent ultra-processed meals, and minimal variety. If you’re eating few fruits/vegetables most days, it’s worth checking your vitamin C habits—especially if you’re also low in iron, feeling run down, or healing slowly.
Here’s the good news: it’s usually easy to hit your vitamin C needs with food. Many people think “orange juice,” but vitamin C is abundant across produce.
Common vitamin C-rich foods include:
A key NuBloom tip: vitamin C is sensitive to heat and storage. You don’t need to avoid cooked foods, but mixing in some raw or lightly cooked produce daily can help.
Pick one:
Do that most days and you’re in a great place.
Food first is the NuBloom default—because vitamin C in a whole-food package comes with fiber and phytonutrients. But supplements can help if you:
If you supplement, you generally don’t need huge doses. Many people do well with 100–250 mg/day, especially if diet is inconsistent (unless your clinician recommends otherwise). Very high doses can cause GI upset, and people with certain conditions (like iron overload disorders) should be cautious and speak with a clinician.
Vitamin C isn’t about extremes—it’s about consistency. If you’re eating a few servings of fruits and vegetables daily, you’re likely getting enough vitamin C. If produce is missing most days, this is a simple place to start: one vitamin C-rich food per day, then build from there. Your immune system, skin, and energy will thank you—and your future self will love how easy it feels.
If you’re ready to get personalized guidance in your health and wellness journey, we’re here to walk alongside you every step of the way. Not sure what’s going on with your health? Start with BloomIQ. Check out our prescriptions and supplements or better yet, take our quiz to find out if there are any other issues holding your metabolism back.
