---
version: alpha-0.1
name: cardio-blood-pressure_protocol
sk_namespace: sk:cardiovascular
status: DRAFT — operator-review-pending
produced_by: ab_stackkit_protocol_author
produced_at: 2026-05-16
informed_by:
  - ~/AgentBrainTentacles/creative_production/sub_tentacles/copy_production/DESIGN.md (brand_voice 0.71)
  - ~/AgentBrainTentacles/sales_and_marketing/sub_tentacles/web_builder/external/open-design/design-systems/ferrari/DESIGN.md (brand_voice 0.71 — confidence-is-the-engineering)
  - ~/AgentBrainTentacles/sales_and_marketing/sub_tentacles/audience_psychology/DESIGN.md (audience_segment 0.71)
  - ~/AgentBrainTentacles/sales_and_marketing/sub_tentacles/web_builder/external/open-design/design-systems/atelier-zero/DESIGN.md (trust_cue 0.71)
  - ~/AgentBrainTentacles/sales_and_marketing/sub_tentacles/web_builder/external/open-design/design-systems/clickhouse/DESIGN.md (technical density 0.61)
  - ~/AgentBrainTentacles/sales_and_marketing/sub_tentacles/storefront/DESIGN.md (commerce_pattern 0.72)
  - ~/AgentBrainTentacles/sales_and_marketing/sub_tentacles/web_builder/external/open-design/design-systems/apple/DESIGN.md (framing 0.51 — what's in / what's NOT in the box)
  - STACKKIT_BRAND_VOICE_PRIMITIVE.md (voice axes + lexicon)
  - 01_positioning_brief.md (multi-domain engine framing)
voice_calibration: peer-expert / demonstrated (cite mechanism + study + dose) / high density / competent-supportive — medication-adjacent disclaim is structural, not decorative
---

# Cardio Blood Pressure — Protocol

> **Read this first.** This protocol is built for general adults managing blood pressure as a long-term concern — including readers already on prescribed antihypertensives. Nothing here replaces a medication your prescriber put you on. The stack is a **complement**, not a substitute. Several items below interact meaningfully with ACE inhibitors, ARBs, diuretics, and beta blockers. We name those interactions inline. **Run the stack past your prescriber before starting** — that is not a legal disclaimer, that is how the protocol works.

---

## Page hero

### Eyebrow tag
`PROTOCOL · CARDIOVASCULAR · BLOOD PRESSURE MANAGEMENT`

### H1 title
**Blood Pressure Stack — General Adult**

### Subtitle
The evidence-based supplement layer that sits alongside prescribed antihypertensives, the DASH-pattern diet, and the basic sleep + cardio fundamentals. Five items in, four items explicitly cut.

### Stack summary block

───────────────────────────────────────────── PROTOCOL SUMMARY

5 supplements — daily + as-needed Total cost (if you buy all 5): ~$95–135 / month Buy individual items, not a bundle.

Brands we recommend: • Pure Encapsulations — magnesium glycinate • Pure Encapsulations — ubiquinol (CoQ10) • Beet It — dietary nitrate (sport shots) • NoSalt or LoSalt — potassium chloride • Nordic Naturals — EPA/DHA (omega-3)

We name what to cut: ✕ L-arginine monotherapy (largely superseded by dietary nitrate) ✕ "Heart health" multi-blends (filler + sub-therapeutic doses) ✕ High-dose calcium supplementation (irrelevant to BP; cardiovascular-risk-ambiguous) ✕ Sodium-loading pre-workouts and electrolyte products marketed for endurance (wrong audience)

This protocol is a complement to prescribed therapy. Not a replacement. Bring it to your prescriber.

───────────────────────────────────────────── [ START THE PROTOCOL ] (primary CTA) → Routes to checkout cart with all 5 affiliate links

[ Buy items individually ] (secondary CTA) ─────────────────────────────────────────────

---

## The protocol — main body

### 1. Magnesium glycinate (daily, foundational)

**What it does.** Magnesium is a cofactor for vascular smooth muscle relaxation. Low intracellular magnesium correlates with elevated vascular tone; supplementation in deficient or sub-optimal adults produces a small, durable reduction in both systolic and diastolic pressure. The mechanism is established — vasodilation via competitive antagonism at calcium channels and direct nitric oxide modulation. The effect size is modest: real, not dramatic.

**Dose + timing.** 300–400 mg elemental magnesium per day, taken with the evening meal. Glycinate form has the best absorption-to-GI-tolerance ratio. Citrate works but loosens stools at therapeutic doses. Oxide is mostly unabsorbed — skip it. Split into two doses if you experience any loose stool.

**Brand we recommend.** Pure Encapsulations Magnesium Glycinate — 120 mg elemental per capsule, no fillers, third-party-tested, USP-verified manufacturing. ~$22 / 90 capsules. Thorne Magnesium Bisglycinate is the comparable second pick.

**Study.** Zhang et al. 2016 (*Hypertension*, 68:324–333), meta-analysis of 34 RCTs, N=2,028. Median dose 368 mg/day for median 3 months produced systolic reduction of 2.00 mmHg (95% CI 0.43–3.58) and diastolic reduction of 1.78 mmHg (95% CI 0.73–2.82). Effect size larger in hypertensive subgroups and in deficient subjects. Filippini et al. 2021 (*J Am Coll Nutr*) replicates the dose-response shape.

**When we'd recommend skipping it.** If you have reduced renal function (eGFR <30) or are on a potassium-sparing diuretic (spironolactone, eplerenone) — magnesium accumulation risk. Also skip if your serum magnesium is already in the upper-normal range and your BP is well-controlled by existing therapy.

---

### 2. Dietary nitrate (beetroot — daily, foundational)

**What it does.** Dietary nitrate is reduced by oral bacteria to nitrite, then to nitric oxide endogenously. Nitric oxide is the primary endothelium-derived vasodilator. Unlike L-arginine supplementation (which has been mostly disappointing in trials), dietary nitrate raises plasma nitrite reliably and produces measurable peripheral and central BP reductions within hours of ingestion. The effect compounds with consistent daily intake over weeks.

**Dose + timing.** 6.4 mmol nitrate per day (one Beet It Sport shot, 70 ml). Take in the morning. Do not use antibacterial mouthwash within several hours — it eliminates the oral bacteria that perform the nitrate-to-nitrite reduction and abolishes the effect. This is the most overlooked failure mode of beetroot supplementation.

**Brand we recommend.** Beet It Sport Nitrate 400 — concentrated 70 ml shot, standardized to 400 mg nitrate (~6.4 mmol). UK-manufactured, third-party-assayed for nitrate content (most beet supplements are NOT). ~$2.50 per shot, ~$75 per month if daily. HumanN SuperBeets is the mass-market alternative — cheaper, less consistent nitrate content per serving.

**Study.** Kapil et al. 2015 (*Hypertension*, 65:320–327), N=68 hypertensive adults, 4 weeks daily beetroot juice (250 ml). Daytime ambulatory systolic reduction of 7.7 mmHg (95% CI 3.6–11.8), diastolic 2.4 mmHg. Siervo et al. 2013 (*J Nutr*, 143:818–826) meta-analysis of 16 trials confirms ~4.4 mmHg systolic average across mixed populations. The Kapil hypertensive-population effect size is notable — among the largest reported for any single supplement intervention in this domain.

**When we'd recommend skipping it.** If you are already on a nitrate-class drug (isosorbide mononitrate, nitroglycerin) — the additive vasodilation is unsafe. Also skip if you are using PDE5 inhibitors (sildenafil, tadalafil) within the same window. If you are on multiple antihypertensives and run low-end systolic readings, start at half-dose and monitor for orthostatic symptoms.

---

### 3. Potassium (dietary-first, supplement-supported)

**What it does.** Potassium counteracts sodium's effect on vascular tone and renal sodium handling. The DASH diet's BP effect is in large part a potassium effect. Most adults under-consume potassium dramatically — recommended intake is 3,500–4,700 mg/day; average US intake is ~2,600 mg. Closing that gap is the single highest-leverage dietary lever in this protocol.

**Dose + timing.** Target an additional 1,000–1,500 mg/day above your current dietary intake. US-market supplements are capped at 99 mg per capsule — useless. The practical answer is potassium chloride salt substitute (NoSalt, LoSalt, Morton Salt Substitute), ~530 mg potassium per 1/4 teaspoon, used in place of sodium chloride at the table or in cooking. Spread across meals.

**Brand we recommend.** NoSalt (RCN Products) or LoSalt (Klinge Foods) — both are potassium chloride, both are inexpensive (~$6–8 for several months of use). Pure-potassium-bicarbonate powders (Pure Encapsulations, NOW Foods) are available for those who dislike the metallic taste of KCl — slightly higher cost (~$18 / 250 g).

**Study.** Filippini et al. 2020 (*J Am Heart Assoc*, 9:e015719), dose-response meta-analysis, 32 trials. 90 mmol/day potassium supplementation (~3,500 mg) produced systolic reduction of 6.8 mmHg in hypertensive subjects. Aburto et al. 2013 (*BMJ*, 346:f1378) WHO-commissioned meta-analysis confirms the shape — larger effects in adults with elevated baseline BP and in those with high sodium intake.

**When we'd recommend skipping it.** If you are on an ACE inhibitor, ARB, potassium-sparing diuretic (spironolactone, eplerenone, amiloride, triamterene), or have reduced renal function — hyperkalemia risk is real and underappreciated. Ask your prescriber to check a basic metabolic panel before starting and again at 4–6 weeks. This is not a theoretical concern.

---

### 4. CoQ10 (ubiquinol form — daily, foundational)

**What it does.** Coenzyme Q10 is a mitochondrial electron-transport cofactor with secondary endothelial effects — it appears to improve endothelial function via reduced oxidative stress on nitric oxide signaling. The BP literature on CoQ10 is mixed but tilts positive. Effects are smaller than the headlines suggested in the 2000s but consistent across better-designed studies. It is also one of the more defensible supplement choices for adults on statin therapy, which depletes endogenous CoQ10.

**Dose + timing.** 100–200 mg ubiquinol per day, with a fat-containing meal. Ubiquinol (reduced form) has substantially better bioavailability than ubiquinone (oxidized form), especially in adults over 50. Take in the morning or midday; some adults report mild stimulant-adjacent alertness.

**Brand we recommend.** Pure Encapsulations Ubiquinol-QH — 100 mg per softgel, Kaneka-sourced ubiquinol (the only ubiquinol form with substantial human trial data), third-party-tested. ~$48 / 60 softgels. Qunol Ultra is the mass-market alternative — also Kaneka-sourced, cheaper per mg, slightly more filler.

**Study.** Rosenfeldt et al. 2007 (*J Hum Hypertens*, 21:297–306) meta-analysis of 12 trials reported systolic reduction of 11 mmHg / diastolic 7 mmHg — this is the headline number, and it is overstated relative to better-controlled subsequent work. Ho et al. 2016 Cochrane review (CD007435) reanalyzed and found no significant effect; methodological critiques of both sides exist. Honest framing: the floor is "modest effect at worst, meaningful at best," with the strongest case for adults on statins or with measurable mitochondrial-stress markers.

**When we'd recommend skipping it.** If you are on warfarin — CoQ10 can reduce INR via vitamin-K-analog structural similarity. Also reasonable to skip if BP is already well-controlled and budget is tight; this is the item in this stack with the weakest evidence base.

---

### 5. EPA/DHA (omega-3 — daily, foundational)

**What it does.** Long-chain omega-3 fatty acids (EPA + DHA from marine sources) produce modest reductions in BP, more reliably at higher doses (>2 g/day combined EPA+DHA). The mechanism involves endothelial function, reduced inflammation, and improved arterial compliance. Effect is larger in hypertensive subjects and in those with low baseline omega-3 status.

**Dose + timing.** 2,000–3,000 mg combined EPA+DHA per day, with a fat-containing meal. Read the label carefully — many fish oil products list "1,000 mg fish oil per softgel" but only 300 mg of that is actual EPA+DHA. You want the EPA+DHA number, not the total oil number.

**Brand we recommend.** Nordic Naturals ProOmega 2000 — 1,125 mg EPA + 875 mg DHA per two softgels, IFOS-certified for purity and oxidation, third-party-tested. ~$45 / 60 softgels. Carlson Elite EPA Gems is the alternative if you prefer higher EPA-to-DHA ratio.

**Study.** Miller et al. 2014 (*Am J Hypertens*, 27:885–896) meta-analysis of 70 RCTs, N=4,484. Doses ≥2 g/day produced systolic reduction of 4.51 mmHg / diastolic 3.05 mmHg in hypertensive subjects. AbuMweis et al. 2018 confirms the dose-response shape. Sub-therapeutic doses (under 1 g/day combined) do not produce the BP effect — this is the most common reason people conclude "fish oil doesn't work."

**When we'd recommend skipping it.** If you are on anticoagulant therapy (warfarin, apixaban, rivaroxaban, dabigatran) — additive bleeding risk, though the absolute risk at these doses is small. Ask your prescriber. Also skip if you have a confirmed fish or shellfish allergy; algae-derived DHA is a partial substitute but EPA content is lower.

---

## Trust block

Stack-kit is brand-agnostic. We earn an affiliate commission when you buy through our links; the commission does not change which products we recommend. The five brands above were chosen on third-party testing, dose-per-serving honesty, and trial-grade ingredient sourcing — not on commission rate.

Every study cited above is real, retrievable, and named with N and effect size. If you click through to PubMed and the number we cited does not match the paper, tell us. We will publish the correction in the changelog at the bottom of this page within 7 days.

This protocol does not replace prescribed therapy. It does not "lower your BP naturally" in the marketing sense. It is a small-effect-size complement to the things that actually move BP: prescribed antihypertensives where indicated, the DASH dietary pattern, 150+ minutes/week of zone-2 cardio, sodium reduction, weight management where applicable, and sleep architecture. We are honest that the stack alone, with the rest of your life unchanged, will produce a small fraction of the effect of those fundamentals.

---

## Anti-pattern check

This protocol does not contain:

- Hype adjectives ("powerful," "breakthrough," "revolutionary," "game-changing"). Pressure shifts are measured in mmHg, not metaphors.
- Pharma-posturing ("clinically proven," "doctor-formulated"). The studies are cited; readers verify directly.
- Wellness fluff ("supports cardiovascular health," "promotes balance"). Every item names a specific mechanism and a specific effect size.
- Conversion-tracking tells ("limited time," "only X left," fake scarcity). The stack is the stack; price what you price.
- Biohack vocabulary ("optimize," "stack-hack," "secret"). The buyer is a peer; treat them as one.
- Snake-oil tells ("synergistic blend," "proprietary formula," undisclosed dosing). Every dose is named explicitly.
- Bro-supplement framing. This is a protocol for adults managing a chronic condition, not a pre-workout.

---

## Godin remarkable test (self-applied)

*Would a customer organically remark on this to another person?*

The candidate remarkable elements:

1. **The cut-list is the remarkable surface.** Every other BP supplement page on the internet adds items. This one removes four — including L-arginine, which has been the default recommendation for two decades. A reader who recognizes that L-arginine was largely superseded by dietary nitrate but has never seen anyone *say so out loud on a sales page* may pass that observation along.

2. **The medication-interaction notes are remarkable inversely.** Most supplement pages either ignore interactions or bury them. Naming hyperkalemia risk for ACE-inhibitor users in the potassium entry, in the same voice as the dose, is structurally honest in a way readers do not expect on a commerce page.

3. **The Ho et al. 2016 Cochrane re-analysis acknowledgment in the CoQ10 entry.** Saying "the headline number is overstated" about an item we are recommending is the kind of move that builds the trust the rest of the stack rides on.

The protocol passes the Godin test on items 1 and 2; item 3 is the load-bearing tone signature. The risk is that none of these are remarkable to a reader who hasn't already lived in the supplement-evaluation space — which is fine, because that reader's remark-trigger is item 1's price + brand transparency rather than the methodological honesty.

---

## Operator review prompts

1. **Cut-list aggressiveness.** The cut-list calls out L-arginine and "heart health multi-blends" by name. Is this the right level of confrontation for a first-publication PDP, or should the cut-list soften to category-level rather than specific-competitor-implication?

2. **Beetroot brand choice.** Beet It is the trial-grade brand (most clinical literature uses it) but it is UK-sourced and the per-serving cost is high relative to HumanN SuperBeets. Do we lead with the trial-grade pick or the price-accessible pick? The protocol leads with trial-grade; the cut-list does not address the HumanN concentration issue directly.

3. **Potassium recommendation shape.** We recommend potassium chloride salt substitute rather than capsule supplements (because US-market capsules are capped at 99 mg). This is the right answer but it is operationally unusual — readers expect a pill, we are recommending a kitchen ingredient. Is the framing in the entry clear enough, or do we need a separate sidebar explaining why?

4. **CoQ10 inclusion at all.** The honest framing acknowledges that Ho et al. 2016 found no effect after methodological tightening. We kept the item because the statin-depletion case is strong and the floor is "modest at worst." Operator may want to either strengthen the inclusion case or drop the item to 4 supplements.

5. **Medication-interaction disclaim placement.** We placed the medication-adjacent disclaim at the very top (before the hero) AND inline in every relevant entry. That is heavy. Some readers will read it as cautious-to-the-point-of-undermining. Is the top-block disclaim the right shape, or should it move to a sidebar?

6. **Voice calibration on the warmth axis.** The protocol reads cool — peer-expert, demonstrated, dense, low-warmth. The medication-adjacent population may benefit from slightly more warmth (this is a chronic condition the reader has likely been managing for years). Should the next iteration soften specific sentences, or is the cool-competence read correct for a buyer who has already read three over-warm supplement pages today and bounced?