A year ago, I hit a wall. At 52, I was feeling sluggish, my hands and feet were always cold, and I struggled to keep up with my daily walks. I chalked it up to “just getting older,” but deep down, I wasn’t ready to accept that. During a late-night scroll through health forums, I stumbled upon CircO2, a nitric oxide supplement promising to boost energy, improve circulation, and support healthy aging. Skeptical but curious, I decided to give it a try. Spoiler alert: it’s been a game-changer! In this CircO2 review, I’m sharing my personal experience, the science behind this best nitric oxide booster for seniors, and why you might want to consider it for your wellness routine.
If you’re wondering does CircO2 really work? or searching for CircO2 reviews from real users, you’re in the right place. I’ll walk you through the benefits of CircO2 for energy and circulation, how to use it, its ingredients, and whether it’s worth your investment. Let’s dive into my journey and explore why this supplement has me feeling younger and more vibrant than ever.
CircO2 is a dietary supplement developed by Advanced Bionutritionals, a trusted name in the nutraceutical world. It’s designed to boost your body’s production of nitric oxide, a molecule that plays a starring role in circulation, energy, and overall wellness. Unlike bulky protein powders or sugary energy drinks, CircO2 comes in convenient, quick-dissolving lozenges that make it easy to incorporate into your daily routine.
Nitric oxide is a gas naturally produced in your body that acts as a signaling molecule, telling your blood vessels to relax and widen (a process called vasodilation). This improves blood flow, delivering oxygen and nutrients to your muscles, brain, and organs. As we age, our nitric oxide levels drop, which can lead to fatigue, poor circulation, and even cognitive fog. CircO2 aims to reverse that decline with a blend of natural ingredients like L-citrulline, beetroot powder, and vitamin C, all backed by science to support healthy aging.
I was drawn to CircO2 because it’s made by Advanced Bionutritionals, a company led by experts like Dr. Frank Shallenberger, known for their commitment to high-quality, research-backed supplements. Their products are manufactured in FDA-registered, GMP-certified facilities, which gave me confidence in its safety and effectiveness.
When my box of CircO2 arrived, I was excited but cautious. The lozenges had a pleasant citrusy taste, like a chewable vitamin C tablet, and dissolved easily in my mouth. I followed the instructions to take one lozenge daily, letting it melt slowly for maximum absorption. The first few days, I didn’t notice much, but by day five, I felt a subtle lift in my energy. My morning walks felt less like a slog, and my hands weren’t as cold as usual.
By the second week, the benefits of CircO2 for energy and circulation were undeniable. I woke up feeling refreshed, not groggy, and my energy lasted through the afternoon without my usual 3 p.m. crash. I also noticed my legs felt less heavy after long days on my feet, a sign that my circulation was improving.
This is when I became a true believer. My daily walks turned into brisk jogs, and I had the stamina to keep up with my grandkids during weekend playtime. My mind felt sharper, too—I wasn’t forgetting where I parked my car or struggling to focus during meetings. Even my sleep improved, with fewer wake-ups in the middle of the night.
After a month, CircO2 had become a non-negotiable part of my routine. I felt like I’d turned back the clock—more energy, better focus, and a sense of vitality I hadn’t felt in years. My joints ached less, and I even noticed my skin looked brighter. It wasn’t a miracle cure, but it was a powerful boost that made me feel like me again.
Here’s what I experienced and what research suggests about CircO2 nitric oxide supplement:
Boosted Energy Levels: The improved blood flow from nitric oxide meant more oxygen reached my cells, giving me sustained energy without jitters. I felt ready to tackle my day, from morning workouts to evening chores.
Improved Circulation: My cold hands and feet warmed up, and my legs felt lighter, likely due to better vasodilation. A 2014 study showed that nitric oxide supplements reduced blood pressure and improved vascular function in hypertensive patients.
Enhanced Cognitive Function: Increased blood flow to the brain supported sharper focus and better memory. I noticed I could recall names and details more easily.
Better Sleep Quality: The calming effect of improved circulation helped me fall asleep faster and wake up refreshed.
Reduced Joint Discomfort: The anti-inflammatory properties of ingredients like beetroot powder eased my achy knees, making movement more comfortable.
Stronger Immune System: With vitamin C and B12, CircO2 supports immune health, helping me fend off seasonal bugs.
Increased Stamina: Whether it was a workout or a busy day, I had more endurance to keep going without feeling drained.
These benefits of CircO2 for energy and circulation made a real difference in my life, and user reviews echo similar experiences.
One reason I trust CircO2 is its transparent, science-backed ingredient list. Here’s a breakdown of the key players and how CircO2 ingredients work:
L-Citrulline: This amino acid is a precursor to L-arginine, which boosts nitric oxide production. It improves blood flow, supports heart health, and may enhance cognitive function. Studies show L-citrulline lowers blood pressure and improves exercise performance.
Beetroot Powder: Rich in nitrates, beetroot is a natural nitric oxide booster. It enhances circulation, reduces muscle fatigue, and supports endurance, making it a favorite among athletes.
Vitamin C: A powerful antioxidant, vitamin C stabilizes nitric oxide and reduces oxidative stress, protecting blood vessels and supporting immunity.
Vitamin B12: This vitamin supports energy production and red blood cell formation, ensuring oxygen is delivered efficiently throughout the body.
Hawthorn Berry Extract: Known for its heart-health benefits, hawthorn supports blood vessel function and may reduce blood pressure.
Magnesium: This mineral helps relax muscles and arteries, promoting smooth blood flow and heart health.
Sodium Nitrite: In small, safe amounts, it supports nitric oxide production and enhances circulation.
These ingredients work synergistically to boost nitric oxide, making CircO2 a standout as the best nitric oxide booster for seniors. The lozenge form ensures fast absorption, delivering results quicker than capsules or powders.
I’m not a scientist, but I love geeking out over how things work in my body. Nitric oxide (NO) is a tiny molecule with a big job. Produced by the endothelial cells lining your blood vessels, it acts like a messenger, telling the smooth muscles in your arteries to relax. This widens blood vessels (vasodilation), improving blood flow and delivering oxygen and nutrients where they’re needed most.
As we age, our bodies produce less nitric oxide, which can lead to stiff blood vessels, high blood pressure, and low energy. A 2014 study found that nitric oxide supplementation significantly reduced systolic and diastolic blood pressure in hypertensive patients after just 20–60 minutes. This is why how CircO2 supports healthy aging is so exciting—it replenishes nitric oxide levels to keep your cardiovascular system humming.
Nitric oxide also plays a role in:
Exercise Performance: Better blood flow means more oxygen to muscles, reducing fatigue and boosting endurance.
Brain Health: Increased cerebral blood flow supports memory, focus, and cognitive performance.
Immune Function: Nitric oxide helps immune cells communicate, strengthening your body’s defenses.
Sexual Health: By improving blood flow, nitric oxide can enhance sexual performance, particularly for men with mild erectile dysfunction.
CircO2 taps into this science with its targeted blend, making it a powerful tool for vitality.
Wondering how to use CircO2 lozenges? Here’s what I’ve learned for maximum effectiveness:
Dosage: Take one lozenge daily, letting it dissolve slowly in your mouth. Avoid swallowing it whole to ensure optimal absorption.
Timing: I take mine in the morning to kickstart my energy, but you can choose any time that fits your routine. Some users prefer the afternoon for a midday boost.
Consistency: Use daily for best results. I noticed subtle changes in a week, but the full benefits kicked in after 4–6 weeks of regular use.
With or Without Food: CircO2 can be taken with or without food, but if you have a sensitive stomach, try it with a meal.
Storage: Keep the bottle in a cool, dry place to maintain potency.
Pro tip: Pair CircO2 with a healthy diet rich in nitrate-packed veggies like spinach or beets to amplify its effects.
Here’s my honest take on CircO2 in a quick table:
Pros
Cons
Fast-absorbing lozenge form for quick results
Slightly pricey at $49.95 for a 30-day supply
Natural, vegan, gluten-free, and non-GMO ingredients
Citrus taste may not appeal to everyone
No major side effects reported in my experience
Large lozenges might be hard to dissolve for some
Backed by a 90-day money-back guarantee
Not a replacement for prescribed medications
Supports energy, circulation, and cognitive health
Results vary by individual
Overall, the benefits far outweigh the drawbacks, especially with the risk-free guarantee.
I scoured the web for CircO2 reviews from real users to see if others shared my experience. Here’s a snapshot of what people are saying:
William S., 50: “I was worried about stressing my heart during workouts, but CircO2 gave me confidence to push myself. I feel stronger and more energized with no side effects.”
Diane G., 62: “Within days, my circulation improved, and I felt more alert. My nitric oxide levels were low, but CircO2 turned things around!”
Ken G., 55: “I’ve tried other nitric oxide supplements, but CircO2’s lozenge form is superior. I feel the difference immediately.”
Anonymous, 48: “It took a couple of weeks, but my energy and focus are better than ever. My only complaint is the lozenge size.”
Based on 1,454 customer reviews, CircO2 has a 3.8 average rating, with 74% recommending it for energy, circulation, and cognitive benefits. Some users reported mild nausea or digestive discomfort, but these were rare.
If you’re wondering where to buy CircO2 online, I recommend sticking to the official Advanced Bionutritionals website (advancedbionutritionals.com). Here’s why:
Authenticity: Ensures you’re getting the real product, not a knockoff.
Discounts: Bulk deals lower the cost (e.g., $44.95 per box for three, $41.50 for six).
Money-Back Guarantee: A 90-day refund policy lets you try it risk-free.
Free Shipping: Often available on larger orders.
Avoid third-party retailers like Amazon to ensure quality and access to the guarantee. The official site also includes free nitric oxide test strips to track your progress, which I found super helpful.
Here are answers to common questions about CircO2 nitric oxide supplement:
Does CircO2 really work?
In my experience, yes! I felt more energy and better circulation within weeks. Studies support nitric oxide’s benefits for blood flow and heart health.
Is CircO2 safe for long-term use?
It’s generally safe, with no major side effects reported by most users. Consult your doctor if you’re on medications, especially for blood pressure.
How long until I see results?
I noticed energy boosts in a week, but full benefits like improved circulation took 4–6 weeks. Results vary by person.
Can I take CircO2 with other supplements?
Yes, but check with your doctor to avoid interactions. I take it alongside a multivitamin with no issues.
Is CircO2 suitable for vegetarians?
Yes, it’s 100% vegan, gluten-free, and non-GMO.
Does it help with blood pressure?
Studies show nitric oxide supplements can lower blood pressure, and I noticed steadier readings after a month. Always consult your doctor.
What’s the taste like?
It’s citrusy, like a chewable vitamin C tablet. I like it, but some users find it strong.
Can it improve exercise performance?
Yes, better blood flow supports endurance and recovery. I felt stronger during workouts.
Is it safe for seniors?
Absolutely, it’s designed for those over 40, 50, or 60 to support healthy aging.
What if I don’t like it?
The 90-day money-back guarantee lets you return it if it doesn’t work for you.
I know what it’s like to feel like your body’s letting you down—tired, achy, and just not yourself. That’s how I felt before CircO2 came into my life. Now, I wake up with energy, move with ease, and feel a spark of youth I thought was gone forever. You deserve that, too. You deserve to feel vibrant, strong, and ready to live life to the fullest, no matter your age.
If you’re on the fence, I get it—new supplements can feel like a leap. But CircO2 isn’t just a supplement; it’s a chance to reclaim your vitality. Take that first step today. Order a box, try it for a month, and see how it feels to have more energy, better circulation, and a sharper mind. With the 90-day guarantee, there’s nothing to lose and everything to gain. Your body is worth it, and I’m rooting for you to feel as alive as I do.
Disclaimer: The content of this article is for informational purposes only. It is not intended to replace professional medical advice, diagnosis, or treatment. Always consult your healthcare provider before beginning any new supplement or health routine.