Liquid · 16 fl oz
Supplement Facts. Serving size: half ounce (1 tablespoon). Servings per container: 32. Calories: 12; total carbohydrate: 3 g (1% DV); sugar: 3 g; vitamin C (as ascorbic acid): 1,000 mg (1111% DV); bioflavonoids: 100 mg (Daily Value not established). Other ingredients: filtered water, crystalline fructose, natural vegetable glycerin, citric acid, blended natural flavor and/or other concentrated flavor extracts, potassium sorbate (to preserve freshness), Luo-Han extract, xanthan gum, grapefruit seed extract (to preserve freshness).
Adults take one tablespoon daily. Children aged one to ten take a quarter to half a tablespoon daily or as directed by a physician. May be mixed with 1 oz of water or juice. Shake well before using. Refrigerate after opening to preserve freshness.
Do not use if the safety seal around the cap has been broken or is missing. Keep out of reach of children. Keep out of direct light or heat.
Source: Dr’s Advantage manufacturer original bottle labels · September 06, 2026. Formulas and labels can change. Check the packaging you receive.
Dr's Advantage Liquid Vitamin C + Bioflavonoids delivers ascorbic acid alongside complementary bioflavonoids in a liquid format, supporting immune function, antioxidant activity, and connective tissue health. The liquid form is well-suited for individuals who prefer to avoid capsules or tablets, including those with difficulty swallowing or absorption concerns.
Why It's Worth Considering: Pairing vitamin C with bioflavonoids may enhance uptake and activity compared to ascorbic acid alone, and the 473 mL liquid format allows flexible, adjustable dosing.
Adults take one tablespoon daily. Children aged one to ten take a quarter to half a tablespoon daily or as directed by a physician. May be mixed with 1 oz of water or juice. Shake well before using. Refrigerate after opening to preserve freshness.
| Feature | Ascorbic Acid | Buffered (Ascorbate) | Liposomal | Ester-C |
|---|---|---|---|---|
| Bioavailability | Good (standard) | Good (gentler) | Excellent (2-3x) | Good |
| GI Tolerance | May cause acidity | Very gentle | Excellent | Gentle |
| Best For | Budget, general use | Sensitive stomachs | Maximum absorption | Sustained release |
| Price | $ | $ | $$$ | $$ |
For maintenance, 500-1000mg daily is sufficient. For immune support during illness, 2000-4000mg in divided doses. The body can only absorb ~200-500mg at once, so split large doses throughout the day. Liposomal forms bypass this limit with 2-3x better absorption.
For most people, standard ascorbic acid at 500-1000mg is sufficient. Liposomal vitamin C is worth the premium if you need higher therapeutic doses (2000mg+) without GI distress, or if you have absorption issues. Studies show liposomal C achieves 2-3x higher blood levels than standard forms.
Vitamin C is water-soluble and excess is excreted in urine. The main risk of high doses (3000mg+) is GI distress (diarrhea, cramping) and increased oxalate production, which may contribute to kidney stones in susceptible individuals. The 'bowel tolerance' test, increasing dose until loose stools, then backing off, is a common practitioner approach.
Meta-analyses show regular vitamin C supplementation reduces cold duration by 8% in adults and 14% in children, and reduces severity. It does NOT prevent colds in most people, but it does in those under physical stress (athletes, military). Taking vitamin C after cold symptoms start has minimal benefit, daily prevention is key.
Take with food to reduce potential stomach acidity. Morning dosing is common since vitamin C may mildly increase alertness. If taking large doses (1000mg+), split into 2-3 doses throughout the day for better absorption and sustained blood levels.
No significant interactions identified. Always consult your healthcare provider.
† 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.
