Powder · 162 g
Serving Size: one scant scoop (5.4 g)
Amount Per Serving
L-arginine ... 2, 050mg
(from arginine alpha ketoglutarate (2:1))
Citrulline ... 715mg
(from citrulline malate)
Vitamin C ... 200mg
(as ascorbic acid)
Other Ingredients: xylitol, stevia leaf extract, luo han guo (Momordica grosvenori) extract (fruit), natural lemon and lime flavors
If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use.
Arginine may be contraindicated with blood pressure medications. Consult your physician for more information.
Take 1 scoop per day, mixed with water, 20 minutes before exercise.
Open original label
Source: Fullscript supplier catalog · September 06, 2026. Formulas and labels can change. Check the packaging you receive.
Pure Encapsulations Nitric Oxide Support is a targeted formula combining L-arginine, L-citrulline, and complementary cofactors designed to support nitric oxide production and healthy vascular function. Formulated by a practitioner-grade brand known for hypoallergenic, rigorously tested ingredients, it's suited for active adults and those looking to maintain cardiovascular circulation and physical performance.
Why It's Worth Considering: Pure Encapsulations uses pharmaceutical-grade L-citrulline alongside L-arginine, a pairing research suggests may sustain plasma arginine levels more effectively than arginine alone, in a clean base free from common allergens and unnecessary excipients.
Take 1 scoop per day, mixed with water, 20 minutes before exercise.
Store in a cool, dry place away from direct sunlight. Most supplements are stable at room temperature (59-77°F). Keep the bottle sealed between uses. Check the label for any specific storage requirements, some probiotics and oils require refrigeration.
Most supplements can be taken together safely. However, some minerals compete for absorption (zinc and iron, calcium and magnesium) and should be taken at different times of day. If you're taking prescription medications, consult your healthcare provider about potential interactions.
Most supplements benefit from consistent daily use over 2-3 months to achieve full effect. Some (like vitamins and minerals) can be taken indefinitely as part of a daily routine. Others (like specific herbs) may benefit from cycling. Follow the product's recommended protocol or consult a practitioner.
Fat-soluble supplements (vitamins A, D, E, K, omega-3, CoQ10) should be taken with a meal containing fat. Water-soluble supplements (B vitamins, vitamin C) can be taken anytime. Minerals are generally best absorbed with food. Probiotics should be taken with or just before a meal. Check the product label for specific timing recommendations.
Track your specific health goals, energy levels, sleep quality, joint comfort, digestion, mood, etc. Most supplements take 2-8 weeks for noticeable effects. For objective measurement, baseline lab tests before starting (and repeat at 3 months) provide definitive evidence. The Gabriel Score incorporates clinical evidence for expected outcomes.
Apotheca is analyzing ingredient interactions, stacking compatibility, and timing recommendations for Pure Encapsulations - Nitric Oxide Support*. This data will be available soon.
† 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.
