Healing & recovery
The heart-friendly peptide that balances your blood pressure and protects your cardiovascular system.
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Angiotensin (1-7) is a peptide your body makes as a natural counterweight to angiotensin II, the hormone that narrows blood vessels and raises blood pressure 2. It relaxes blood vessels, calms inflammation, and is being studied for protecting the heart and kidneys. It has reached early human trials (Phase 1-2) but remains a research compound, not an FDA-approved medicine.
Angiotensin 1-7 is a naturally occurring peptide that counterbalances angiotensin II's harmful effects. 2 While angiotensin II narrows blood vessels and promotes inflammation, angiotensin 1-7 widens them and reduces inflammation, potentially protecting heart and kidney function.
Angiotensin 1-7 is a peptide of seven amino acids. The enzyme ACE2 or other peptide-cutting enzymes make it from angiotensin II (a hormone that tightens blood vessels). It switches on the Mas receptor (a docking site on cells), 23 which widens blood vessels, reduces inflammation, and works against angiotensin II signaling. Within the renin-angiotensin system (the body's blood pressure control system), Ang 1-7 acts as a counterweight that protects the heart and kidneys.
Evidence check
Some human studies
It has been tested in people, but only in small or early-stage studies. Promising, but not yet proven the way an approved medicine is.
Every numbered marker on this page links to one of the 6 sources at the bottom.
Heart Health & Protection
Protects heart tissue from damage and inflammation
Blood Pressure Balance
Helps balance blood pressure naturally
Anti-Inflammatory Support
Reduces inflammation throughout the cardiovascular system
The most-asked question
The research-reported range is 100 mcg/kg, once daily. Studies used different doses for different situations — find yours:
Chemotherapy-related low platelets (clinical trial)
100 mcg/kg
In a cancer trial, this dose was injected under the skin after chemo to help protect platelet counts. A higher 300 mcg/kg dose was also tested but did not work better. 4
Severe COVID-19 (clinical trial), Hospital-based use
0.5 mg/kg
In a COVID-19 study, the lab-made form (called TXA-127) was given as a daily drip into a vein. No serious drug-related side effects were seen. 5
The ceiling: 5-10 mcg/kg (as determined by your healthcare provider based on individual response and tolerance)
Reconstitution, in plain words
Peptides usually arrive as a freeze-dried powder in a small vial. “Reconstitution” just means adding sterile water back in so you can measure a dose. Here's how it works for Angiotensin (1-7):
Add the recommended volume of bacteriostatic water to the Angiotensin (1-7) vial. Gently swirl (do not shake) until the powder is fully dissolved. The resulting solution should be clear. Calculate your individual dose based on the concentration and your prescribed amount.
Your dose of Angiotensin (1-7) is determined by your healthcare provider. Using an insulin syringe marked in units, draw up the exact amount prescribed. For example, if the reconstituted concentration is 1mg/mL and your dose is 0.5mg, draw up 0.5mL (50 units on an insulin syringe). Always double-check calculations before injection.
Three quick questions — your vial, your water, your dose — and it tells you the exact syringe mark. “Find dose amount” is preloaded with Angiotensin (1-7)'s recorded schedule.
Timing
Use Angiotensin (1-7) at the same time each day for optimal results. Consistency in timing helps maintain stable levels and maximize therapeutic benefits. Follow your healthcare provider's specific instructions.
Angiotensin (1-7) can generally be used with or without food. If you experience any discomfort, try taking it with a light meal. Follow specific guidance from your healthcare provider.
Angiotensin (1-7) should be used as directed by your healthcare provider. If combining with other medications or supplements, discuss potential interactions with your provider. Avoid combining with compounds that have overlapping mechanisms unless specifically guided by a medical professional.
The honest list
These show up most often. They usually fade as your body adjusts.
This effect has a common likelihood of occurring. Within 15-30 minutes of injection
What to do Start with low doses. Lie down during injection. Monitor BP regularly. Drink adequate fluids and salt unless restricted. Report severe dizziness.
This effect has a common likelihood of occurring. Immediate to 1-2 hours
What to do Sit or lie down immediately after injection. Rise slowly from lying or sitting position. Stay hydrated. Usually resolves within a few hours.
This effect has a common likelihood of occurring. Immediately at injection site
What to do Rotate injection sites. Apply ice for 5-10 minutes if desired. Keep site clean. Most resolve within a few hours.
This effect has a moderate likelihood of occurring. 15 minutes to 2 hours
What to do Stay hydrated. Rest in quiet, dark room. May take over-the-counter pain relievers if approved. Usually mild and temporary.
Rare, but if any of these happen, stop and contact a medical professional.
This effect has a uncommon but serious likelihood of occurring. Can develop gradually over days or acutely
What to do Regular blood tests to monitor potassium. Avoid potassium supplements. Limit high-K foods. Seek medical attention if palpitations, chest pain, or muscle weakness develop.
Week by week
Is it right for you?
Angiotensin (1-7) should only be started, adjusted, or discontinued under medical supervision. This information is for educational purposes only and does not replace professional medical advice. Never stop a prescribed treatment without consulting your healthcare provider first, as abrupt discontinuation may have consequences.
May reduce effectiveness and increase kidney injury risk
Risk of dangerous potassium elevation (hyperkalemia)
May compound electrolyte imbalances and blood pressure effects
Works together in the RAS (the body's blood pressure and fluid control system) to make Angiotensin (1-7)
Blocks the harmful Angiotensin II receptors (docking sites) while letting the protective pathways keep working
An ACE inhibitor (a blood pressure drug) that shifts the RAS balance toward protective peptides
Generally safe to take alongside Angiotensin (1-7). Space doses apart if taking oral formulations to ensure optimal absorption.
Helpful if experiencing any GI side effects that could lead to dehydration. Safe to combine.
Angiotensin (1-7) is particularly well-suited for individuals focused on cardiovascular health and heart protection. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Angiotensin (1-7) is particularly well-suited for individuals focused on blood pressure management and hypertension. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Angiotensin (1-7) is particularly well-suited for individuals focused on recovery from heart-related conditions. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Angiotensin (1-7) is particularly well-suited for individuals focused on anti-inflammatory support. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Angiotensin (1-7) is not FDA-approved. Human data come from small cancer trials: a completed phase I study that stepped doses up and tracked how the drug moves through the body 6, and a randomized, placebo-controlled phase 2 study alongside chemotherapy that reported no drug-related safety issues 4. Animal studies suggest possible benefits for high blood pressure and changes in heart structure, but also a risk of blood pressure dropping too low — especially alongside common blood pressure drugs (ACE inhibitors or ARBs). Its effects on body-wide inflammation and immune function, seen in animal studies, are not confirmed in humans. Human data on how the body handles it are limited to the phase I study, which set 400 µg/kg as the recommended dose for its once-daily, 5-day schedule 6.
Human evidence comes from small cancer trials: a completed phase I study in 18 patients with advanced solid tumors, where doses were stepped up until problems appeared — at 700 µg/kg, stroke and a reversible nerve problem affecting the head (cranial neuropathy) set the limit 6 — and a randomized, placebo-controlled phase 2 study in 34 patients receiving chemotherapy that reported no drug-related safety issues 4. Beyond these, published research focuses on whether it works in animals rather than on full safety profiles.
Keeping it good
Store Angiotensin (1-7) in the refrigerator at 36-46°F (2-8°C) in its original packaging. Protect from light and moisture. Do not freeze. Check the expiration date before use. Some formulations may be stored at room temperature for limited periods—check your specific product labeling.
Once reconstituted, Angiotensin (1-7) should be kept refrigerated at 36-46°F (2-8°C) and used within the timeframe specified on your product labeling (typically 14-28 days). Label the vial with the reconstitution date. Do not use if the solution appears cloudy, discolored, or contains particles.
Not our opinion — the published record
2026
Ang-(1-7) protected against joint inflammation by adjusting the renin-angiotensin system (the body's blood pressure and fluid control system) locally. Its ability to lower markers of inflammation and protect tissue function suggests it could help beyond heart and blood vessel conditions.
Bilgin E, et al.
2026
SGLT2 inhibitors (diabetes drugs that also protect the heart and kidneys) combined with RAAS blockade (drugs that block the blood pressure hormone system) protected the heart and kidneys better than either alone, because they work in different ways. The Ang-(1-7) protective pathway works together with these modern therapies. It reduced hospital stays for heart failure and slowed kidney disease progression, with no extra safety concerns.
Aazar RFM, et al.
2026
Ang-(1-7) levels were lower in chronic kidney disease, but giving extra H2S (hydrogen sulfide, a gas the body uses as a signal) restored the protective Ang-(1-7) pathway. This brought back Mas receptor levels (the docking site Ang-(1-7) uses), reduced oxidative stress (damage from unstable oxygen molecules), and prevented blood vessel problems, while improving control of high blood pressure.
Tapia-Martínez JA, et al.
2013
Patients received angiotensin-(1-7) subcutaneously at 100 mcg/kg or 300 mcg/kg following chemotherapy for up to six cycles; the 100 mcg/kg dose reduced Grade 3-4 thrombocytopenia with no drug-related safety issues.
Pham H, Schwartz BM, Delmore JE, et al.
2022
Patients with severe COVID-19 received TXA-127 (angiotensin 1-7) into a vein at 0.5 mg/kg once daily, planned for up to 10 days. No serious side effects were blamed on the drug.
Self WH, Shotwell MS, Gibbs KW, et al.
2009
18 patients with advanced solid tumors received rising doses of Ang-(1-7) injected under the skin once daily for 5 days every 3 weeks. At 700 µg/kg, the toxicities that limited the dose were stroke (grade 4) and cranial neuropathy (damage to nerves in the head, grade 3, which reversed). Other toxicities were generally mild. The recommended phase II dose (the dose to use in the next stage of trials) was 400 µg/kg.
Petty WJ, Miller AA, McCoy TP, Gallagher PE, Tallant EA, Torti FM
If this isn't the right fit
Your questions
Great question! While Angiotensin II tightens blood vessels, increases inflammation, and raises blood pressure, Angiotensin (1-7) does the opposite. It opens blood vessels, fights inflammation, protects your heart, and lowers blood pressure. They're like opposing players on a team—both natural, but with opposite effects. This is why Ang-(1-7) is called the 'protective' peptide.
This is important—ask your doctor first. Some blood pressure medications (like ACE inhibitors) work well with Ang-(1-7) because they complement each other. Others might cause your blood pressure to drop too much. Your doctor needs to monitor your blood pressure carefully if combining these. Never make changes without professional guidance.
Dizziness usually means your blood vessels are relaxing and blood pressure is dropping—which is what we want, but your body needs time to adjust. This is why we start with low doses. Lie down after injection, stay hydrated, and rise slowly from sitting or lying down. Most people adapt after the first few doses.
You'll notice several things: blood pressure readings improve (usually within weeks), you feel less bloated and tired, and exercise feels easier. Blood tests show improved kidney function and inflammation markers. Your doctor can run specific cardiovascular tests. Some benefits are subtle—better sleep, less brain fog, improved mood from better blood flow.
Research suggests it's safe for long-term use since your body produces it naturally, but long-term human studies are still ongoing. It's not FDA-approved yet, so it's considered a research compound. Most safety concerns come from using too much too fast or not monitoring blood work. Work with a knowledgeable healthcare provider and get regular blood tests.
Research shows real promise. Ang-(1-7) protects heart tissue, reduces inflammation, and improves how efficiently your heart pumps. Several studies demonstrate it helps with heart failure recovery. However, this is still largely in the research phase. If you have heart failure, this is something to discuss with your cardiologist, not something to try on your own.
Stay away from high-potassium foods because Ang-(1-7) can raise potassium levels. Avoid coconut water, avocados, spinach, and supplements with potassium. Eat plenty of other vegetables, lean proteins, and whole grains. Stay well-hydrated and don't drastically cut salt without asking your doctor—your body needs proper electrolyte balance.
6 sources
Every numbered marker on this page points to one of these. Same sources, same numbering as the Angiotensin (1-7) research profile on Peptide Initiative.
Want the deep science?
Every claim on this page traces back to the research database behind Peptide Initiative — studies, citations, clinical trial data, and the technical detail we deliberately left out here.
Open the research profileThis guide is education, not medical advice. Angiotensin (1-7) is a research compound that is not FDA-approved for human use. Talk to a clinician before taking anything.
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