apollo
Online Doctor Consultation & Medicines
  • Login
ic_search_new

Karela (Bitter Gourd) Juice: Ayurvedic Benefits And Side Effects

Discover karela juice benefits, Ayurvedic uses, and side effects. Learn evidence, safety tips, and who should avoid bitter gourd juice.

reviewerImg

Written by Dr. M L Ezhilarasan

Reviewed by Dr. Md Yusuf Shareef MBBS

Last updated on 26th Nov, 2025

karela

Introduction

Karela, also known as bitter gourd or bitter melon (Momordica charantia), has been used in Ayurveda for centuries for its bitter tonic effects. Many people now drink karela juice for blood sugar support, digestion, and general wellness. This article explains the Ayurvedic perspective, reviews current research, and shares safety tips so you can make informed choices about bitter gourd juice.

Karela Juice Benefits in Ayurveda and Modern Research

Let’s see the benefits of karela juice in ayurveda and in modern medicine:

Traditional Ayurvedic Perspective
 

  • This part describes how Ayurveda views karela and its traditional uses.
  • Ayurveda views bitter foods as cleansing and supportive for digestion and metabolism.
  • Karela is traditionally used for sugar balance, appetite regulation, and skin support.
  • Traditional use does not mean proven effectiveness by modern scientific standards.


What Does Science Say?
 

  • This section summarises scientific findings and limitations regarding karela juice.
  • Research on bitter melon mainly focuses on blood sugar control. Evidence is mixed and limited.


Blood Sugar Support
 

  • Some small human studies show mild reductions in fasting or post-meal glucose, but results are inconsistent.
  • A major evidence review found insufficient high-quality data to recommend bitter melon as a stand-alone treatment for type 2 diabetes.
  • Use karela juice only as an addition to approved diabetes care, not as a replacement for medications or lifestyle advice.


Potential Antioxidant and Anti-inflammatory Effects

Laboratory and animal studies suggest antioxidant properties, but human evidence is very limited.


Digestive Health
 

  • Whole bitter gourd provides fibre and nutrients that support digestion.
  • Karela juice contains less fibre and may cause stomach discomfort, especially when taken on an empty stomach.


Weight Management
 

  • Bitter gourd is low in calories.
  • There is no good evidence that karela juice alone causes weight loss. Healthy diet and activity remain key.

Potential Side Effects and Safety of Bitter Gourd Juice

Here are the common side effects people may experience:

  • Stomach upset, cramps, or diarrhoea
  • Nausea or vomiting
  • Strong aversion to taste


Serious Risks and Who Should Avoid It

Let’s see who should not use karela juice due to safety concerns:

a) Risk of Low Blood Sugar
 

  • Karela may lower blood glucose.
  • If you take insulin or other diabetes medicines, combining them with karela juice can increase the risk of low blood sugar.
  • Watch for sweating, shakiness, dizziness, fast heartbeat, or confusion.


b) Pregnancy and Breastfeeding
 

  • Safety is not established. Some components have raised concerns in traditional and animal studies. Avoid during pregnancy and breastfeeding unless advised by a clinician.


c) Children
 

  • Limited safety data. Avoid giving karela juice to young children unless recommended by a paediatric clinician.


d) G6PD Deficiency and Seeds
 

  • Bitter gourd seeds contain compounds linked to haemolysis in people with G6PD deficiency.
  • Avoid the seeds and consult a clinician before use.


e) Before Surgery

Stop karela juice 1 to 2 weeks before surgery because of its possible effects on blood sugar.

Consult Top Specialists Here

Ms Suchanda Guha, Dietician

Ms Suchanda Guha

Dietician

10 Years • M.Sc (Applied Nutrition), B.Sc (Food & Nutrition), Diploma (Yogic Nutrition)

Kolkata

NutriKutir, Kolkata

1188

Ms. Samapti Maity, Dietician

Ms. Samapti Maity

Dietician

16 Years • MSc. (Clinical Nutrition & Dietitics), NDEP, Course in Maternal Infant Young Child Nutrition.Diploma in Sports Nutrition, Diploma in Diabetic educator, FODMAP Specialist

Kolkata

BIENETRE CLINIC, Kolkata

1300

1200

How to Use Karela Juice Safely?

Here’s how you can use karela juice safely:

Consult a Healthcare Professional First

Especially if you have diabetes, G6PD deficiency, are pregnant or breastfeeding, or take prescription medicines.


Start Low and Monitor
 

  • Begin with a small amount.
  • If you have diabetes, check your blood glucose more frequently when trying karela juice.


Food Safety and Preparation
 

  • Wash thoroughly.
  • Remove seeds and pith.
  • Dilute with water or mix with cucumber or celery juice if needed.
  • Do not add sugar.
  • Drink fresh and refrigerate promptly.


Keep Expectations Realistic
 

  • Karela juice is a vegetable drink, not a cure.
  • Long-term diet and lifestyle habits matter more.

Simple Home Preparation Tips

Here’s a practical step-by-step guide to making karela juice.

  • Choose firm, green karela without soft spots.
  • Rinse and scrub well.
  • Remove seeds and pith.
  • Blend with clean drinking water.
  • Add lemon or ginger for flavour if desired.
  • Strain if preferred and consume in moderation.

Who Might Consider Karela Juice?

Let’s have a look at situations where karela juice may be appropriate:

  • Adults who enjoy the taste and want to add variety to a vegetable-rich diet.
  • People with stable blood sugar who have medical guidance and are following a comprehensive lifestyle plan.

Who Should Avoid It?

Here’s who should stay away from karela juice due to safety risks:

  • Pregnant or breastfeeding individuals
  • Children, unless advised by a paediatric clinician
  • People with G6PD deficiency
  • Anyone on glucose-lowering medicines who cannot monitor sugar levels
  • Anyone scheduled for surgery soon

Alternatives with Stronger Evidence for Blood Sugar Support

Let’s have a look at evidence-based approaches for health and blood sugar management.

  • Balanced meals rich in vegetables, whole grains, legumes, nuts, and lean proteins
  • Regular physical activity, including strength training
  • Weight management if you have overweight or obesity
  • Adequate sleep and stress reduction
  • A personalised plan from a clinician or dietitian

These approaches have strong support from major health organisations and should form the foundation of diabetes care. Bitter gourd can be included as a food or drink, but should not replace proven treatments.

Consult Top Specialists Here

Ms Suchanda Guha, Dietician

Ms Suchanda Guha

Dietician

10 Years • M.Sc (Applied Nutrition), B.Sc (Food & Nutrition), Diploma (Yogic Nutrition)

Kolkata

NutriKutir, Kolkata

1188

Ms. Samapti Maity, Dietician

Ms. Samapti Maity

Dietician

16 Years • MSc. (Clinical Nutrition & Dietitics), NDEP, Course in Maternal Infant Young Child Nutrition.Diploma in Sports Nutrition, Diploma in Diabetic educator, FODMAP Specialist

Kolkata

BIENETRE CLINIC, Kolkata

1300

1200

Consult Top Specialists Here

Ms. Anupriya, Dietician

Ms. Anupriya

Dietician

7 Years • B.Sc(Clinical Nutrition & Dietetics),M.Sc(Clinical Nutrition & Dietetics),Certified Diabetes Educator, Certificate course in Renal Nutrition.

Lucknow

Delight Sun Hospital, Lucknow

625

Ms. Ipsita Ghosh, Dietician

Ms. Ipsita Ghosh

Dietician

7 Years • Diploma in Dietetics Examination

Kolkata

Nutrimed, Kolkata

1000

800

Ms Suchanda Guha, Dietician

Ms Suchanda Guha

Dietician

10 Years • M.Sc (Applied Nutrition), B.Sc (Food & Nutrition), Diploma (Yogic Nutrition)

Kolkata

NutriKutir, Kolkata

1188

Ms. Samapti Maity, Dietician

Ms. Samapti Maity

Dietician

16 Years • MSc. (Clinical Nutrition & Dietitics), NDEP, Course in Maternal Infant Young Child Nutrition.Diploma in Sports Nutrition, Diploma in Diabetic educator, FODMAP Specialist

Kolkata

BIENETRE CLINIC, Kolkata

1300

1200

Ms. Sreeparna Dey Dhara Deb, Dietician

Ms. Sreeparna Dey Dhara Deb

Dietician

10 Years • DNHE

Bansdroni

Siddhita Healthcare., Bansdroni

650

650

Consult Top Specialists Here

Ms. Anupriya, Dietician

Ms. Anupriya

Dietician

7 Years • B.Sc(Clinical Nutrition & Dietetics),M.Sc(Clinical Nutrition & Dietetics),Certified Diabetes Educator, Certificate course in Renal Nutrition.

Lucknow

Delight Sun Hospital, Lucknow

625

Ms. Ipsita Ghosh, Dietician

Ms. Ipsita Ghosh

Dietician

7 Years • Diploma in Dietetics Examination

Kolkata

Nutrimed, Kolkata

1000

800

Ms Suchanda Guha, Dietician

Ms Suchanda Guha

Dietician

10 Years • M.Sc (Applied Nutrition), B.Sc (Food & Nutrition), Diploma (Yogic Nutrition)

Kolkata

NutriKutir, Kolkata

1188

Ms. Samapti Maity, Dietician

Ms. Samapti Maity

Dietician

16 Years • MSc. (Clinical Nutrition & Dietitics), NDEP, Course in Maternal Infant Young Child Nutrition.Diploma in Sports Nutrition, Diploma in Diabetic educator, FODMAP Specialist

Kolkata

BIENETRE CLINIC, Kolkata

1300

1200

Ms. Sreeparna Dey Dhara Deb, Dietician

Ms. Sreeparna Dey Dhara Deb

Dietician

10 Years • DNHE

Bansdroni

Siddhita Healthcare., Bansdroni

650

650

More articles from General Medical Consultation

Frequently Asked Questions

Can karela juice cure diabetes?

No. There is no cure for diabetes, and karela juice is not a replacement for medical care. Some studies suggest modest blood sugar effects, but evidence is mixed. Follow your clinician’s guidance on proven treatments and lifestyle changes.

When is the best time to drink karela juice?

There is no proven “best” time. Because bitter gourd can lower blood sugar, drinking it on an empty stomach may increase the risk of hypoglycemia for some people, especially those on diabetes medications. Talk with your clinician and monitor your glucose.

How much karela juice should I drink?

There is no standardized, evidence-based dose. If your healthcare professional says it’s appropriate for you, start small, watch for side effects, and check your blood sugar if relevant. More is not necessarily better.

Is bitter gourd safe during pregnancy?

Safety is not established, and many experts recommend avoiding karela juice during pregnancy and while breastfeeding. If you are pregnant or nursing, consult your healthcare professional before using any herbal products.

 

Are there interactions with medications?

Yes. Bitter gourd may increase the risk of low blood sugar when combined with insulin or oral diabetes medications. Always discuss new supplements or juices with your healthcare team, and monitor your levels closely if you proceed.