SURGE — Nitric Oxide Support
4.5 66 reviews

SURGE — Nitric Oxide Support

Two aminos, both dosed · 30-day supply

Supports

  • Nitric Oxide ProductionBoth amino acids your body uses as raw material, in one capsule.
  • Healthy CirculationNitric oxide is what blood vessels use to relax and widen.
  • Daily Use, No StimulantsNo caffeine, no tingles, no crash. Nothing to come down from.
  • Doses You Can Check400 mg and 400 mg, printed on the panel and confirmed on the batch certificate.
$29.99
Select quantity
Purchase options
Delivery every

    30 days, empty bottle honored Free US shipping over $50 A lab certificate for every batch

    • Every dose printed on the panel — no proprietary blends
    • A certificate of analysis you can read before you buy
    • 30 days to change your mind, empty bottle included
    • No subscription unless you choose one
    Supplement Facts
    • L-Citrulline — 400 mg per serving
    • L-Arginine — 400 mg per serving

    That is the complete active list. The full panel — every ingredient, every dose — is printed on the bottle and shown in the product photos. No proprietary blends, nothing hidden.

    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.

    How to take it

    Take daily, with or without food. Morning works well alongside FLOW and ROOT. One bottle is a one-month supply, which works out at about $1.00 a day.

    There is no loading phase and no cycling. Same serving, same time, every day.

    What does this do

    Two amino acids, taken daily, that support nitric oxide production and healthy circulation.*

    L-citrulline at 400 mg and L-arginine at 400 mg per serving. Nitric oxide is what blood vessels use to relax and widen, and these two are the raw material your body works from. Both amounts are printed on the panel and confirmed on the batch certificate.

    No stimulant, no pre-workout buzz, no loading phase and no cycling. Same serving, same time, every day. There is nothing to feel and nothing to come down from — it is daily raw material for a system that responds to consistency.

    Now the part most labels skip: 400 mg of each amino is a modest amount. We would rather print that here than have you find it on a forum. It is a cost decision, it is completely normal for this category, and it is exactly why the phrase “clinically dosed” appears nowhere on this site. It will not replace exercise, and it is not a pill that fixes decades in a day.

    Worth knowing before you buy. If you take blood pressure medication, nitrates, or anything prescribed for erectile function, talk to your doctor first. That is not a formality with something taken for circulation.

    One more, because it matters more in this age group than most labels admit. Arginine can shift the balance between arginine and lysine, and some people who carry the cold sore or chickenpox virus find that supplemental arginine brings on an outbreak. If you get cold sores, or you have had shingles or chickenpox, talk to your doctor before you start.

    *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.

    How to tell if it's working

    Honest answer: there is no clean way to feel circulation, and any brand that tells you otherwise has left honesty behind.

    What you can do is pick one thing you can measure and write it down before the first capsule — how the back half of your usual walk feels, or how the second flight of stairs lands. One line on the back of a receipt.

    Read it again at day 30, because that is when the guarantee closes. Read it a third time at week eight, because that is the fairer test. If neither line has moved, this is not for you, and we would rather you knew it than kept paying for it.

    The guarantee, and how it actually works

    30 days from delivery. Here is the machinery.

    One message through the Contact page with your order number. That's the whole process.

    No form. No photo. No reason required. No return shipping, no restocking fee. No retention call — there's no script, because we never wrote one.

    Empty bottles are honored. We'd rather you actually took it than returned it sealed.

    Refund to your original payment method, usually two to five business days after we confirm.

    Shipping & returns

    Free shipping on US orders over $50. Orders ship from the USA within 1–2 business days; tracking is emailed as soon as the label is created.

    Damaged, defective or incorrect order? Contact us within 7 days with a photo and we'll replace or refund it at no cost — and it does not use up your 30-day guarantee.

    Made in the USA GMP-registered facility COA every batch 30-day empty-bottle guarantee Made in the USA GMP-registered facility COA every batch 30-day empty-bottle guarantee Made in the USA GMP-registered facility COA every batch 30-day empty-bottle guarantee

    What's inside

    Two aminos. Both doses on the label.

    L-Citrulline400 mg

    Your kidneys convert citrulline into arginine, which keeps arginine levels steadier for longer than taking arginine on its own. It is the slower door into the same room.*

    L-Arginine400 mg

    The direct precursor — the raw material your body uses to produce nitric oxide. Straight in, rather than around.*

    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.

    A wedge of watermelon rind beside two mounds of fine white crystalline amino acid powder on a pale limestone slab

    What it supports

    Two ingredients. Four things they support.

    Supports nitric oxide production

    Supplies both amino acids your body uses as raw material.

    Supports healthy circulation

    Nitric oxide is what blood vessels use to relax and widen.

    A man in his late fifties walking a gravel path at the edge of high desert scrubland in morning light

    No stimulants, ever

    No caffeine, no tingles, no crash. Built for daily use.

    Doses you can check

    400 mg and 400 mg, printed on the panel and confirmed on the batch certificate.

    What to expect

    This takes time. Here is roughly how long.

    Amino acids work through steady daily supply, not one large dose. The guarantee runs 30 days, which is shorter than the window below — so the decision point and the honest window are not the same date. We would rather say so than let you find out.

    An ancient bristlecone pine on a high exposed ridge at first light
    1. Week 1

      It becomes a habit

      One serving daily, with or without food. You are building a baseline, not chasing a buzz — and there is no buzz in here to chase.

    2. Weeks 2–4

      The pathway gets steady input

      Consistency is the whole mechanism. A dose on Monday and nothing until Friday is not a trial of anything.

    3. Day 30

      The decision point

      The guarantee closes here. It is early. If you are unsure, that is a fair reason to take the refund.

    4. Weeks 4–8

      The honest window

      If men notice something, this is usually where — after the refund window has shut. That is the trade, and we are not going to move the window to make the sale easier.

    How we compare

    Most labels hide the dose. Ours prints it.

    Compared against how supplements in this category are typically sold. Never a named brand — just the pattern.

    • Dosing
    • Testing
    • What's disclosed
    • Guarantee

    Bristlecone

    • Dosing Exact mg printed for every active
    • Testing Third-party COA published per batch
    • What's disclosed Every active named, with its milligrams
    • Guarantee 30 days, empty bottles included

    Typical

    • Dosing Proprietary blend, totals only
    • Testing Tested — certificate on request
    • What's disclosed A blend name and a total
    • Guarantee Unopened returns only

    Read the label. Then decide.

    Every active and its amount is printed on the panel, and a certificate confirms the amount is really in there. If that is not enough, don't buy it.

    $29.99$1.00 a day

    30 days, empty bottle honored

    Read this batch's lab report.

    Match the batch number printed on your bottle to its certificate of analysis. Published, not on request.

    View the COA

    Transparency, backed by reviews

    4.7

    Based on 50 reviews

    50 reviews
    Write a Review
    1. Travis M.

      Exactly what I wanted

      I wanted something focused on circulation support without another stimulant-heavy pre-workout. SURGE fit what I was looking for.
    2. Christopher F.

      I did some research first

      I don't usually buy supplements immediately after seeing an ad. I compare ingredients and look at the amounts first. SURGE came out ahead of several other products I was considering.
    3. Jason B.

      No more giant pre-workout tubs

      I wanted a circulation-focused supplement without buying another giant pre-workout tub. SURGE was a much better fit for my routine.
    4. Dominic P.

      No caffeine

      No caffeine, no giant scoop of powder, no complicated routine. That's exactly why I bought it.
    5. Derek M.

      Simple and convenient

      Really straightforward. Capsules are easy to take and the bottle doesn't take up much room.
    6. Nick R.

      Exactly what I wanted

      Exactly what I wanted from a simple circulation-support supplement.
    7. Matthew R.

      Convenient every day

      I've been taking it consistently because there's nothing complicated about it. Simple routines are the ones I actually stick with.
    8. Marcus D.

      Simple formula

      I like the fact that the formula is focused on citrulline and arginine instead of having a huge ingredient list.
    9. Mark T.

      Easy to fit into my routine

      Fits easily into my supplement routine.
    10. Ryan C.

      I like the formula

      I looked at quite a few men's wellness products before settling on SURGE. I liked that the formula was focused instead of throwing every possible ingredient together.
    11. Adam K.

      No caffeine

      No caffeine, no crazy pre-workout feeling. Exactly what I wanted.
    12. Joshua M.

      Nice presentation

      The bottle looks good enough to leave on the counter, which is useful because I don't forget about it when I can see it.
    13. Andre W.

      Easy to take

      Easy capsules and easy to remember. Much more convenient than carrying around pre-workout powder.
    14. Brandon T.

      Works with my schedule

      My mornings are hectic, so I appreciate anything that doesn't require preparation. SURGE takes about ten seconds to add to my routine.
    15. Daniel P.

      Fits into my routine

      I take SURGE alongside breakfast. No extra steps and no mixing powders.
    16. Eric H.

      No proprietary blend

      Two ingredients. No proprietary blend. Easy choice.
    17. Isaiah R.

      Fits my training routine

      I train pretty consistently and wanted something I could add to my routine without another dose of caffeine. SURGE has been easy to work in.
    18. Robert C.

      No stimulant feeling

      Easy capsules and no stimulant feeling.
    19. Anthony H.

      I prefer capsules

      I've tried drink mixes and powders before and eventually stopped using them. Capsules are just more convenient for me.
    20. Jamal T.

      No proprietary blend

      I appreciate that I can see the actual ingredients and amounts. I've stopped buying supplements where everything is hidden behind a proprietary blend.
    21. Tyler H.

      Easy daily habit

      I keep the bottle beside my other morning supplements. Very easy to remember.
    22. Kevin D.

      Easy addition to my routine

      Easy addition to my morning routine.
    23. Brian C.

      A practical choice

      I wanted something that could complement the rest of my routine without making my supplement cabinet even more complicated.
    24. Trevor L.

      Much simpler than pre-workout

      I've never really liked the whole pre-workout thing. I don't need a giant energy rush before every workout. I wanted something more focused, and SURGE makes more sense for me.
    25. Andrew F.

      Good for an active routine

      I've been getting back into a more consistent training schedule and cleaning up my daily habits. SURGE fits nicely into that overall routine.
    26. Andrew R.

      Works with my training routine

      Good fit for my training routine. No caffeine, which was important.
    27. Steven T.

      Easy to stay consistent

      The biggest win for me is probably consistency. It's easy enough that I haven't had to make myself remember to take it.
    28. Cameron H.

      Easy addition

      Easy addition to my morning routine. No complaints.
    29. Adam F.

      Thoughtful formula

      I appreciate that SURGE doesn't seem to be chasing an enormous ingredient count. The formula feels deliberately put together.
    30. Elijah P.

      Did some research first

      I spent some time reading about citrulline before buying. I liked that SURGE also included arginine and wasn't overloaded with other ingredients.
    31. Chris R.

      Two ingredients and done

      Simple two-ingredient formula. That's what caught my attention.
    32. Justin M.

      Easy to travel with

      I've taken SURGE with me on a couple of work trips. Toss the bottle in my bag and I'm good to go.
    33. Nathan C.

      Exactly the kind of supplement I prefer

      I prefer focused supplements over products that try to do everything. SURGE has two main ingredients and a clear purpose. That's more appealing to me than a 30-ingredient pre-workout.
    34. Jonathan B.

      Exactly what I wanted

      I wasn't looking for a complicated men's wellness stack. I wanted one focused product that I could add to my existing routine, and SURGE fit the bill.
    35. Tyler S.

      A different approach

      I liked the idea of using an amino-acid approach rather than another stimulant-heavy product.
    36. Marcus F.

      No weird energy feeling

      One of the main reasons I bought this was because I didn't want another product that made me feel wired. SURGE doesn't have that stimulant-heavy approach.
    37. Marcus T.

      No stimulant-heavy formula

      I train several days a week and wanted to add something focused on normal circulation and nitric oxide production. I like that SURGE isn't a stimulant.
    38. Justin R.

      Good so far

      Good so far. I've been taking it consistently and like the formula.
    39. Brandon S.

      Travel friendly

      I travel frequently and capsules are way easier for me than carrying a tub of pre-workout. SURGE goes straight into my travel bag.
    40. Scott B.

      Focused formula

      Focused formula without a long ingredient list.
    41. Tyler M.

      Straightforward

      Straightforward product. Two ingredients I recognize and no unnecessary extras.
    42. Devon K.

      I like the concept

      I like the concept behind SURGE. I'm not looking for a miracle product, just something focused that fits into my routine.
    43. Aaron T.

      Finally ditched the powder

      I've bought more pre-workout powder than I care to admit. Eventually I got tired of mixing it, carrying it around and feeling like I needed it every time I trained. SURGE is much simpler.
    44. Steve K.

      Simple and convenient

      Simple and convenient. That's really all I wanted.
    45. Malcolm R.

      Good ingredient transparency

      I read the label before ordering and liked how straightforward it was. No proprietary blend and no giant list of ingredients.
    46. Brian M.

      I wanted a transparent formula

      I was skeptical because there are so many blood-flow supplements out there. I liked seeing citrulline and arginine clearly listed instead of a proprietary blend.
    47. Corey B.

      Still testing it

      I'm still testing SURGE, so I'm not ready to give it a five. I like that it's stimulant-free and the capsules are easy to take. I'll need more time before I decide if it's something I'll keep buying.
    48. David P.

      Bought it after researching citrulline

      I bought SURGE after reading about citrulline. I liked that the formula also included arginine.
    49. Jordan P.

      Fits my routine perfectly

      I already have a pretty consistent training routine, so I didn't want something that changed how I felt before working out. SURGE was appealing because it's much more straightforward.
    50. Marcus H.

      Good alternative to pre-workout

      Good alternative for someone who doesn't want another caffeine-heavy pre-workout.

    Questions

    Questions men actually ask.

    Including the awkward ones. If yours is not here, ask us on the Contact page and we will answer it plainly or tell you we don't know.

    Is 400 mg of each enough?

    It's a modest amount, and we'd rather say that on the page than let you find it somewhere else. Some brands in this category use more, and some of them print it and some of them hide it inside a blend.

    What we stand behind is the second half of the sentence: both actives are named, both amounts are printed, and a certificate confirms the amounts are really in there. If you want to check our numbers against anything, please do. That is the entire reason we print them.

    Is this like a pre-workout?

    No caffeine, no tingles, no crash. Pre-workouts borrow these ingredients and bury them under stimulants. SURGE is just the ingredients, dosed for daily use — which also means there is nothing here to feel in the next thirty minutes.

    Why both citrulline and arginine?

    Arginine is the direct raw material. Citrulline is converted by your kidneys into more arginine, which keeps levels steadier for longer than arginine on its own. One is the fast door, one is the slow door, and they open into the same room.

    I get cold sores. Does that matter?

    Ask your doctor before you start. Arginine shifts the balance between arginine and lysine, and some people who carry the cold sore or chickenpox virus find supplemental arginine brings on an outbreak. The same goes if you've had shingles.

    Most labels in this category leave that out. We'd rather lose the order than have you find out the hard way.

    Can I take it with blood pressure medication?

    Talk to your doctor first — and be specific with them about nitrates and about anything prescribed for erectile function. That is non-negotiable with something taken for circulation. We're not going to play physician over the internet, and you shouldn't trust a supplement company that does.

    How long until I notice anything?

    If you notice a difference, it is usually somewhere in the four to eight week range. Some sooner, some later, some not at all.

    Worth saying plainly: the guarantee runs 30 days, which is shorter than that. You will likely be deciding before the ingredients have had their full run. We would rather tell you that than pretend the two line up.

    Is there a subscription?

    Yes, and it's opt-in. This page defaults to a one-time purchase — if you want Subscribe & Save you have to choose it. It's 25% off, shipped monthly, and you can cancel any time from your account or by messaging us through the Contact page.

    No minimum number of orders, no phone call, no retention script. Nothing on this site is locked behind a subscription.

    What if it doesn't work for me?

    You message us and get your money back. 30 days from delivery, empty bottle honored, no form and no return shipping. That's the entire policy.

    Where is it made?

    Manufactured and bottled in the USA in a GMP-registered facility. What GMP does and doesn't guarantee is spelled out on the Quality & COA page — including the part most brands leave out, which is that it governs the process and not the formula.