Solaray C-Crystaline Powder: Pure High-Potency Vitamin C (5,000 mg)
When you want pure, potent vitamin C without compromise, Solaray C-Crystaline Powder delivers. Formulated with 100% pure ascorbic acid in a refined crystalline form, this single-ingredient powerhouse provides 5,000 mg of Vitamin C per heaping teaspoon. Unlike standard tablets or capsules that require synthetic binders, flow agents, or gelatin shells, this powder contains zero fillers, zero excipients, and zero artificial additives.
✓ 100% Pure Ascorbic Acid: No excipients, no magnesium stearate, and no silicon dioxide.
✓ High-Potency 5-Gram Serving: Delivers 5,000 mg of water-soluble vitamin C in every scoop.
✓ Rapid Crystalline Dissolution: Fine crystal structure dissolves smoothly in water or juice without chalky clumps.
✓ Triple-Tested Quality: Lab-verified by Solaray for identity, purity, and potency.
Why Choose Crystalline Powder Over Pills and Capsules?
Most high-dose vitamin C tablets are held together by tableting aids, lubricants, and artificial coatings. For people who take therapeutic doses or have sensitive digestive tracts, those extra ingredients can get in the way.
Solaray C-Crystaline Powder is raw, unadulterated ascorbic acid. The crystalline format means the granules have a uniform surface area that dissolves rapidly in cold or room-temperature liquids.
Total Dosing Flexibility
You are never locked into a single tablet size. Measure out a full 5-gram serving when your immune system needs robust support, or divide it into smaller 500 mg portions throughout the day for steady blood levels.
Zero Pill Fatigue
Taking 5,000 mg in tablet form requires swallowing 5 to 10 massive horse pills. A single teaspoon of crystalline powder mixed into your morning citrus juice or smoothie delivers the same potency in seconds.
Maximum Bioavailability
Because the powder is already dissolved before it reaches your stomach, your body does not waste energy breaking down compressed binders or vegetable cellulose capsules.
How Vitamin C Works in Your Body: The Science in Plain English
Humans are one of the few mammals on Earth that cannot synthesize vitamin C internally. Because we lack the enzyme L-gulono-gamma-lactone oxidase, every microgram of vitamin C our cells require must come from our diet. Here is what this essential micronutrient does inside your body every single day:
1. Cellular Immune Shielding
Vitamin C concentrates inside your white blood cells (neutrophils and phagocytes) at levels up to 100 times higher than in circulating blood. During an immune response, these cells generate reactive oxygen species to neutralize foreign invaders. Vitamin C protects these white blood cells from damaging themselves, keeping your immune frontline active and responsive (Carr & Maggini, 2017).
2. The Essential Architect of Collagen
Collagen is the primary structural protein that gives strength to your skin, joints, tendons, gums, and blood vessels. Vitamin C functions as an indispensable biological cofactor for two enzymes—prolyl hydroxylase and lysyl hydroxylase. Without adequate vitamin C, your body cannot knit amino acids into stable collagen fibers, leading to weaker tissue regeneration, delayed wound healing, and accelerated skin aging (Pullar et al., 2017).
3. The Master Water-Soluble Antioxidant
Every breath and metabolic process produces free radicals—unstable molecules that act like biological rust on your cell membranes. Vitamin C donates electrons to neutralize these free radicals without becoming harmful itself. Even better, it helps recharge and recycle oxidized Vitamin E and glutathione back into active defenses.
4. Enhances Non-Heme Iron Absorption
Plant-based iron (non-heme iron found in spinach, beans, and grains) is notoriously difficult for the gut to absorb. Ascorbic acid converts ferric iron into ferrous iron, a form that is readily transported across the intestinal wall, helping maintain healthy cellular oxygen delivery and stamina (Hallberg et al., 1989).
Understanding Absorption: Getting the Most Out of 5,000 mg
Groundbreaking pharmacokinetic studies conducted at the National Institutes of Health (Levine et al., 1996) demonstrated that vitamin C absorption is regulated by specialized intestinal doorways called SVCT-1 transporters (Sodium-Dependent Vitamin C Transporters).
When you consume a massive single dose, these transporters become saturated, and excess unabsorbed ascorbic acid stays in the digestive tract before being naturally flushed out. Here is how to make a high-potency powder work effectively for you:
Split Your Doses: If your goal is sustained blood levels throughout the day, take 1/4 teaspoon (approx. 1,250 mg) two to three times daily rather than taking all 5,000 mg at once.
Always Take With Food: Taking your mixed drink alongside a meal slows down digestive transit time, giving your intestinal receptors a better window to absorb the nutrient while reducing stomach acidity.
Stay Well Hydrated: Because vitamin C is completely water-soluble, drinking plenty of water assists your kidneys in processing and balancing systemic micronutrient levels.
Supplement Facts & Complete Ingredient Listing
Supplement Facts
Serving Size: 1 Heaping Teaspoon (Approx. 5 g) Servings Per Container: About 45
Amount Per Serving
% Daily Value
Vitamin C (as 100% Pure Ascorbic Acid) 5,000 mg
5,556%
* Percent Daily Values are based on a 2,000 calorie diet.
Other Ingredients: None.
Dietary Specifications: 100% Vegan, Vegetarian, Non-GMO, Gluten-Free, Soy-Free, Dairy-Free, and Corn-Free. Contains zero added sugar, artificial sweeteners, binders, flow agents, or preservatives.
Packaging & Size: 8 oz (227 grams) recyclable bottle with tamper-evident safety seal.
How to Mix and Use Solaray C-Crystaline Powder
Because this is pure, food-grade ascorbic acid, it possesses a tart, refreshing sourness very similar to natural unsweetened lemon juice. Here are easy ways to take it:
✓ The Citrus Boost
Stir 1/2 to 1 teaspoon into 8 to 12 oz of fresh orange juice, apple juice, or lemonade. The natural fruit sugars balance the clean tartness of pure ascorbic acid.
✓ Daily Morning Smoothie
Add your serving to a blended smoothie with berries, banana, or greens. The flavor pairs well with fruit smoothies.
✓ Simple Lemon Water
Stir into cold filtered water and drink through a straw to minimize direct contact with tooth enamel, followed by a quick rinse with clean water.
Safety Guidance, Bowel Tolerance & Health Precautions
Vitamin C has an exceptional safety profile because it is water-soluble; your body does not store excess amounts long term. However, when taking high-potency nutritional supplements, keep the following guidance in mind:
Understanding "Bowel Tolerance": The Tolerable Upper Intake Level (UL) established by the Institute of Medicine is 2,000 mg/day for adults to prevent loose stools. When excess ascorbic acid reaches the lower intestine, it can pull water into the bowel via osmosis, leading to gas or diarrhea. If this occurs, simply reduce your daily serving until your digestion is completely comfortable.
Kidney Stones & Oxalate Sensitivity: A fraction of metabolized vitamin C is converted to oxalate in the body. If you have a history of calcium oxalate kidney stones or severe kidney impairment, consult your physician before taking high-dose vitamin C.
Iron Storage Conditions: Because ascorbic acid enhances intestinal iron absorption, individuals with hemochromatosis, thalassemia, or other iron-overload conditions should monitor their intake under medical supervision.
Enamel Protection: Like natural lemon juice, pure dissolved ascorbic acid is acidic. Drink your mixture promptly (or sip with a straw) and rinse your mouth with plain water rather than brushing your teeth immediately after drinking.
Scientific References & Authoritative Citations
Carr, A. C., & Maggini, S. (2017). Vitamin C and Immune Function. Nutrients, 9(11), 1211. [Peer-reviewed review detailing neutrophil accumulation, chemotaxis, and antioxidant protection of leukocytes]
Pullar, J. M., Carr, A. C., & Vissers, M. C. M. (2017). The Roles of Vitamin C in Skin Health. Nutrients, 9(8), 866. [Clinical analysis of prolyl and lysyl hydroxylase cofactor roles in collagen biosynthesis and epidermal photoprotection]
Levine, M., Conry-Cantilena, C., Wang, Y., et al. (1996). Vitamin C pharmacokinetics in healthy volunteers: evidence for a recommended dietary allowance. Proceedings of the National Academy of Sciences USA (PNAS), 93(8), 3704–3709. [Seminal in-hospital depletion-repletion study establishing transporter saturation and renal excretion thresholds]
Hallberg, L., Brune, M., & Rossander, L. (1989). The role of vitamin C in iron absorption. The American Journal of Clinical Nutrition, 49(1), 140–144. [Controlled human trial verifying reduction of ferric to ferrous iron for enhanced intestinal mucosal uptake]
National Institutes of Health (NIH) Office of Dietary Supplements. Vitamin C: Fact Sheet for Health Professionals. [Official guidance on dietary reference intakes, upper limits, and biological mechanisms]
Frequently Asked Questions (FAQ)
What is the difference between ascorbic acid and vitamin C?
Ascorbic acid is the exact chemical name for pure, bioidentical vitamin C. It is the identical molecule found in oranges, lemons, and bell peppers. Solaray C-Crystaline Powder is simply 100% pure ascorbic acid in an easy-to-dissolve crystal form.
Why does this powder supply 5,000 mg if the Daily Value is only 90 mg?
The baseline Daily Value (90 mg for adult men, 75 mg for adult women) was established primarily to prevent basic deficiency diseases such as scurvy. Many wellness seekers, athletes, and health practitioners prefer higher supplemental intakes during seasonal changes, rigorous athletic training, or oxidative stress to support deeper tissue recovery and robust immune barriers. Having a pure powder lets you choose whether you take 500 mg, 1,000 mg, or a full 5,000 mg serving.
Can taking 5,000 mg cause stomach upset or loose stools?
Yes, if taken all at once on an empty stomach. Your intestines have a saturation limit for how much vitamin C can be absorbed in a single moment. Unabsorbed vitamin C draws water into the colon, which can lead to loose stools (commonly known as reaching your "bowel tolerance"). To prevent this, start with a smaller dose (such as 1/4 teaspoon, providing 1,250 mg) and always consume it with meals.
Can I mix this powder into hot tea or warm foods?
It is best to mix C-Crystaline Powder into cold or room-temperature liquids. Pure ascorbic acid is heat-sensitive; prolonged exposure to boiling water or high cooking temperatures can degrade the vitamin molecule and reduce its antioxidant potency.
Does this product contain any corn, gluten, or common allergens?
No. Solaray C-Crystaline Powder contains zero fillers, binders, gluten, soy, dairy, yeast, animal products, or artificial preservatives. It is 100% vegan and tested in cGMP-certified laboratories to verify purity.
How should I store this product to keep it fresh?
Store the container tightly closed in a cool, dry place away from direct sunlight, steam, and excessive humidity (such as bathroom medicine cabinets). Keeping moisture out ensures the crystals remain dry, potent, and free-flowing.
*FDA Disclaimer: 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. Always consult your qualified healthcare practitioner before starting any dietary supplement regimen, especially if you are pregnant, nursing, taking prescription medications, or have a pre-existing medical condition.
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As a dietary supplement, mix one heaping teaspoon into water or juice and drink with meals.
