Rauwolfia (Sarpagandha (Indian Snakeroot))
Rauwolfia serpentina, also known as Sarpagandha, is a potent herb traditionally used in Ayurveda for its calming and antihypertensive properties. It contains alkaloids like reserpine, ajmaline, and ajmalicine, contributing to its therapeutic effects.
Botanical name: Rauwolfia serpentina. Also known as: Indian Snakeroot, Sarpagandha, Chandrika, Serpentine Root.
Properties
Depletion of catecholamines (reserpine), Vasodilation (ajmalicine), Antiarrhythmic properties (ajmaline)
Dosage
Dosage varies depending on the preparation and condition. For insomnia, 250 mg – 1 gram in divided doses per day. For hypertension, 250 mg – 2 grams in divided doses per day. For schizophrenia, 500 mg – 4 grams in divided doses per day. Root powder: 250–500 mg once or twice daily. Standardized extract capsules: 0.1–0.25 mg reserpine equivalent, 1 capsule nightly under supervision. Decoction (Kashaya): 20–30 ml dose twice daily. [1, 2, 5, 30, 32]
Classical attributes
- Rasa: Bitter, Pungent
- Virya: ["Ushna (Heating)"]
- Vipaka: ["Katu (Pungent)"]
Benefits
- Hridaya (Cardiac tonic)
- Shoolahara (Analgesic)
- Nidrakara (Sedative)
- Raktapitta hara (Balances bleeding disorders)
Traditional uses
- Hypertension
- Anxiety
- Insomnia
- Epilepsy
- Mental Agitation
Dosha effects
- vata: balancing
- kapha: decreasing
- pitta: balancing
Preparation methods
- Root Powder (Churna): The dried roots are powdered. Dosage: 250 mg – 2 grams per day, often divided. [1, 2, 5]
- Decoction (Kashaya): Boil the root in water until reduced. Dosage: 20-30 ml twice daily. [2]
- Paste: Roots are ground into a paste, often mixed with other ingredients like rose water or ghee for specific applications. [1, 14]
- Standardized Extract: Capsules containing a specific amount of reserpine equivalent. Dosage: 0.1–0.25 mg reserpine equivalent, 1 capsule nightly under supervision. [2]
Contraindications
- Bronchial asthma
- Duodenal ulcer
- Hyperacidity
- Renal disorders
- Pregnancy and lactation (stimulates uterus)
- Depression
- Severe cardiac conduction defects
- Gastritis (should not be used alone)
- Parkinsonism
- Inflammatory Bowel Disease (ulcerative colitis and Crohn's disease)
- Bradycardia (slow heartbeat)
- Allergic reactions such as asthma
- Lesions of the duodenum
- Inflammatory lesions of the rectum
- Gallstones
- Children (generally not ideal without strict supervision)
Side effects
- Hypotension (low blood pressure)
- Dizziness
- Sedation and lethargy
- Depression (can lead to suicidal thoughts in vulnerable individuals)
- Nasal congestion
- Gastrointestinal upset (nausea, diarrhea, vomiting, abdominal cramps)
- Loss of appetite
- Swelling in feet and lower legs
- Bradycardia (slow heart rate)
- Dry mouth
- Tremors
- Nightmares
- Edema
- Sexual debility
Interactions
- Antidepressants (MAOIs, SSRIs)
- Beta-blockers
- ACE inhibitors
- Antiplatelet drugs
- Digoxin
- Levodopa
- Other medications for high blood pressure (potential for excessive blood pressure lowering)
- Central nervous system depressants
Clinical evidence
Clinical trials demonstrate Rauwolfia serpentina's efficacy in managing hypertension, anxiety-related hypertension, and general anxiety. Studies show improvements in blood pressure and anxiety scores with standardized extracts.
Ayurvedic karmas
- Hridaya (Cardiac tonic)
- Shoolahara (Analgesic)
- Nidrakara (Sedative)
- Raktapitta hara (Balances bleeding disorders)
Classical clinical indications
- Hypertension
- Anxiety
- Insomnia
- Epilepsy
- Mental Agitation