Sarpagandha for High BP: Why Asrol Is Not a Home Remedy
Sarpagandha (Asrol, Rauvolfia serpentina) really can lower blood pressure, and that is exactly why it isn’t a home remedy. Its root is the source of reserpine, a prescription BP drug of the 1950s that fell out of favour because it could cause deep depression, a slow heart and dangerous drops in pressure. Taking it on your own, or on top of your BP tablets, is a gamble with an unmeasured drug.
The short version
- Plant: Rauvolfia serpentina; Sarpagandha (Sanskrit, Hindi), Asrol or Chhota Chand (Urdu and Hindi), Indian snakeroot
- Part used: root, sold as powder, tablets and in “BP” blends
- Main chemical: reserpine, plus related alkaloids
- Verdict: a real drug in a herb’s clothing; only under medical supervision
- Emergency line: 180/120 or higher with chest pain, breathlessness, severe headache, weakness or confusion
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Why is Sarpagandha dangerous to take on your own?
Because it works like a medicine, without a medicine’s label. Reserpine empties nerve endings of chemical messengers, including noradrenaline, dopamine and serotonin (brain and body signalling chemicals). Lower noradrenaline relaxes blood vessels and slows the heart. Lower serotonin and dopamine in the brain can bring on low mood, and sometimes severe depression with suicidal thoughts.
- Root powder varies in strength by plant, age and storage, so you can’t know how much reserpine you’re taking.
- Its effects build up slowly and can last for weeks after stopping, which makes problems easy to miss.
- Many “BP churna” blends don’t say how much Sarpagandha they contain.
When doctors still prescribed reserpine, it came as tablets of a fixed strength, with follow-up visits. A spoon of brown powder from a market stall has none of that.
Signs that Sarpagandha is causing harm
Stop and see a doctor promptly if you notice any of these after taking it:
- low mood, crying, loss of interest, poor sleep or nightmares, or any thoughts of self-harm (that’s urgent: seek help today)
- dizziness on standing, fainting or a very slow pulse
- a constantly blocked nose, heavy drowsiness or sluggishness
- stomach burning, black stools or vomiting blood (it can raise stomach acid)
- stiffness, slowness or tremor, like Parkinson’s
- Fainting, chest pain, black stools or thoughts of self-harm: go to an emergency department now.
- Take the packet or powder with you, plus a list of every medicine you take.
- Don’t stop your prescribed BP tablets suddenly while you sort this out, unless the doctor treating you says so.
It isn’t too weak to matter. It’s strong enough to be a drug, and that’s the problem.
What people say vs what tradition says
The famous claim
Videos call Sarpagandha “the Ayurvedic BP tablet with no side effects” and suggest swapping amlodipine for a pinch of root powder. Others sell it for sleep, anxiety and “garmi” in the head.
What tradition says
The root has a long history in Ayurveda and folk medicine for insomnia, agitation and “madness”, and as a snakebite remedy, which is where the snake in the name comes from. Unani physicians know it as Asrol and used it in compound formulas for restlessness and high “khoon ka dabao”. In older times it was given by the practitioner, in small amounts, and watched.
Our honest take
Skip self-use This is the rare herb where the BP effect is well supported. Reserpine went from this root into Western medicine in the early 1950s and was one of the first effective drugs for high blood pressure. It also went into psychiatry for a while. It was then largely replaced because newer medicines lower BP with far fewer mood and stomach problems.
- True: it lowers BP.
- True: it can cause depression, slow heart rate, low BP and stomach bleeding.
- False: “no side effects because it’s herbal”.
- Fair use: only if a qualified doctor or registered practitioner, who knows all your medicines, prescribes and monitors it.
Myth: you can take it with your BP tablets for extra effect
This is the most dangerous mix. Sarpagandha on top of amlodipine, losartan, a beta blocker or a water pill can push pressure too low, causing falls, fainting and kidney strain, especially in older people.
It can also clash with antidepressants, Parkinson’s medicines, digoxin, sleeping tablets, alcohol and some cold medicines. Never start, stop or swap a BP medicine on your own. Your doctor adjusts doses based on readings, not on how you feel.
Anyone with past or current depression, bipolar disorder or thoughts of self-harm; stomach ulcers or acidity that bleeds; Parkinson’s; a slow heart rate or heart block; asthma; kidney disease; anyone booked for surgery. Never in pregnancy or breastfeeding, and never for children or teenagers.
Older adults are more likely to fall from low pressure. Ask before taking any “BP herb”.
What BP numbers mean, and when it’s an emergency
Know the house numbers before you think about any remedy:
| Reading | What it means |
|---|---|
| Clinic 140/90 or higher | High BP, needs a doctor’s plan |
| Home about 135/85 or higher | High on home readings |
| 180/120 or higher, no symptoms | Recheck after 5 minutes rest; see a doctor the same day |
| 180/120 or higher with symptoms | Emergency: chest pain, breathlessness, severe headache, weakness, confusion or blurred vision |
- Sit quietly for 5 minutes, back supported, feet flat, arm resting at heart level.
- No chai, cigarette or exercise in the 30 minutes before.
- Take two readings 1 minute apart, morning and evening, for 7 days, and write them down.
Our guide to BP home measures: garlic, salt and walking covers the changes that are both safe and useful, and Arjuna bark tea explains another herb that clashes with BP medicine.
Did you know?
The botanical name Rauvolfia honours Leonhard Rauwolf, a 16th-century German physician and botanist who travelled through the Middle East. The genus was named after him about a century after he died.
Sarpagandha questions, answered straight
Does Sarpagandha lower blood pressure?
Yes, it can. Its root contains reserpine, which was once prescribed for high BP. That’s why it needs medical supervision: strength varies, and the side effects include depression, a slow heart and dizziness.
Sarpagandha ke nuksan kya hain?
The main harms are low mood or depression, dizziness and fainting from low BP, a slow pulse, blocked nose, drowsiness, stomach acid and bleeding, and Parkinson-like stiffness. Some effects last weeks after stopping.
Can I take Sarpagandha with amlodipine?
Not on your own. Together they can drop your pressure too far and cause falls or fainting. Talk to your doctor, and never change your BP medicine without them.
Can Sarpagandha replace BP tablets?
No. It’s an older, harder-to-control drug, not a gentler one. Modern BP medicines were developed partly because reserpine caused too many problems. Don’t swap without your doctor.
What is Asrol in English?
Asrol is the Urdu name for Rauvolfia serpentina, known in English as Indian snakeroot and in Sanskrit as Sarpagandha. Chhota Chand is another common name.
Is Sarpagandha good for sleep and anxiety?
It’s sedating, which is why tradition used it for restlessness, but it can also cause depression. Poor sleep and anxiety deserve a proper check, and safer options exist.
Can Sarpagandha cause depression?
Yes. This is the best-known serious side effect of reserpine. Anyone with past depression should never take it. If you feel low or think of self-harm while taking it, get help today.
Is Sarpagandha safe in pregnancy?
No. It should not be taken in pregnancy or while breastfeeding. BP in pregnancy needs a doctor’s care, and any reading of 140/90 or higher should be reported promptly.
Is there Sarpagandha in Ayurvedic BP tablets?
Many Ayurvedic and Unani BP products include it, sometimes without saying how much. Read the ingredient list for Rauvolfia, Sarpagandha or Asrol and show the pack to your doctor.
What BP reading is an emergency?
A reading of 180/120 or higher with chest pain, breathlessness, severe headache, weakness, confusion or blurred vision is an emergency. Go to hospital. Without symptoms, rest 5 minutes, recheck, and see a doctor that day.
Can older people take Sarpagandha for BP?
They’re at higher risk of falls, confusion and low mood from it. Older adults should only take it if a doctor prescribes and monitors it.
More honest herb reviews are in Unani & Herbal, Decoded.