Anaemia - Symptoms, Management & Medicines

What is Anaemia?

Anaemia is a condition in which the number of red blood cells (RBCs) or the amount of hemoglobin (Hb) in the blood is lower than normal. Hemoglobin is an iron-containing protein in RBCs that carries oxygen from the lungs to all parts of the body. When hemoglobin levels are low, the body's tissues receive less oxygen, leading to fatigue and other symptoms.

According to the World Health Organization (WHO), Anaemia is generally defined as:

• Men: Hemoglobin <13 g/dL
• Non-pregnant women: Hemoglobin <12 g/dL
• Pregnant women: Hemoglobin <11 g/dL

Types of Anaemia

1. Iron Deficiency Anaemia (IDA) – Most common type worldwide.
2. Vitamin Deficiency Anaemia – Due to deficiency of Vitamin B12 or folate.
3. Anaemia of Chronic Disease – Associated with chronic infections, inflammation, kidney disease, or cancer.
4. Hemolytic Anaemia – Premature destruction of red blood cells.
5. Aplastic Anaemia – Bone marrow fails to produce enough blood cells.
6. Inherited Anaemias – Such as sickle cell disease and thalassemia.

Causes of Anaemia

1. Decreased Red Blood Cell Production

• Iron deficiency
• Vitamin B12 deficiency
• Folate deficiency
• Chronic kidney disease (reduced erythropoietin production)
• Bone marrow disorders (aplastic Anaemia, leukemia)
• Hypothyroidism

2. Increased Red Blood Cell Destruction (Hemolysis)

• Autoimmune diseases
• Sickle cell disease
• Thalassemia
• Malaria
• Certain medications
• Artificial heart valves

3. Blood Loss

• Heavy menstrual bleeding
• Gastrointestinal bleeding (ulcers, piles, colorectal cancer)
• Trauma or surgery
• Frequent blood donation
• Hookworm infestation

4. Increased Requirement

• Pregnancy
• Childhood growth
• Adolescence
• Lactation

Common Symptoms of Anaemia

General Symptoms

• Fatigue
• Weakness
• Reduced exercise tolerance
• Lack of energy
• Shortness of breath
• Dizziness
• Headache
• Difficulty concentrating

Skin and Appearance

• Pale skin
• Pale lips
• Pale nail beds
• Pale conjunctiva (inside lower eyelid)

Cardiovascular Symptoms

• Rapid heartbeat (tachycardia)
• Palpitations
• Chest pain (in severe Anaemia)
• Low blood pressure
• Heart failure (very severe, long-standing Anaemia)

Neurological Symptoms

(Especially Vitamin B12 deficiency)

• Tingling or numbness in hands and feet
• Poor balance
• Memory problems
• Confusion

Iron Deficiency-Specific Symptoms

• Brittle or spoon-shaped nails (Koilonychia)
• Hair loss
• Craving for ice, clay, or starch (Pica)
• Cracks at the corners of the mouth (Angular cheilitis)
• Smooth, sore tongue (Glossitis)

Line of Treatment and Mechanism of Action of Drugs Used in Anaemia

The treatment of Anaemia depends on its underlying cause. Identifying the type of Anaemia is the first step before starting therapy.

1. Iron Deficiency Anaemia (IDA)

First-Line Drugs

A. Oral Iron Preparations

Examples:

• Ferrous sulfate
• Ferrous fumarate
• Ferrous gluconate
• Ferric maltol
• Liposomal iron

Mechanism of Action

1. Iron is absorbed mainly in the duodenum and proximal jejunum.
2. Iron enters intestinal cells via the Divalent Metal Transporter-1 (DMT-1).
3. It binds to transferrin in the bloodstream.
4. Transferrin transports iron to the bone marrow.
5. Iron is incorporated into hemoglobin during red blood cell production.

Result:

• Increased hemoglobin synthesis
• Increased RBC production
• Improved oxygen-carrying capacity

B. Intravenous Iron Preparations

Examples:

• Iron sucrose
• Ferric carboxymaltose
• Ferric derisomaltose
• Iron dextran (less commonly used)
• Sodium ferric gluconate

Mechanism

• IV iron bypasses intestinal absorption.
• Iron binds to transferrin after release from the complex.
• Rapid delivery to bone marrow and iron stores.
• Faster correction of iron deficiency than oral preparations.

Indications

• Severe iron deficiency
• Malabsorption
• Chronic kidney disease
• Intolerance to oral iron
• Ongoing blood loss

2. Vitamin B12 Deficiency Anaemia

Drugs

• Cyanocobalamin
• Hydroxocobalamin
• Methylcobalamin

Mechanism of Action

Vitamin B12 acts as a cofactor for:

• DNA synthesis
• Red blood cell maturation
• Neurological function
• Conversion of homocysteine to methionine

Without B12:

• DNA synthesis is impaired.
• Large, immature red cells (megaloblasts) are produced.

Replacement restores normal cell division and RBC production.

3. Folate Deficiency Anaemia

Drug

• Folic acid
• L-5-methyltetrahydrofolate (L-5-MTHF)

Mechanism

Folate is essential for:

• DNA synthesis
• Purine and thymidine synthesis
• Rapidly dividing cells such as bone marrow

Supplementation restores normal erythropoiesis.

4. Anaemia of Chronic Kidney Disease

Drugs

A. Erythropoiesis-Stimulating Agents (ESAs)

Examples:

• Epoetin alfa
• Darbepoetin alfa
• Methoxy polyethylene glycol-epoetin beta

Mechanism

• Mimic endogenous erythropoietin.
• Stimulate erythropoietin receptors on erythroid progenitor cells in the bone marrow.
• Increase red blood cell production.

Often combined with iron supplementation to support effective erythropoiesis.

5. Hemolytic Anaemia

Drugs

Corticosteroids

Examples:

• Prednisolone
• Methylprednisolone

Mechanism

• Suppress autoimmune destruction of red blood cells.
• Reduce antibody production.
• Decrease macrophage-mediated RBC destruction.

Other Options

• Rituximab
• Azathioprine
• Cyclophosphamide
• Intravenous immunoglobulin (IVIG)

These are used in selected immune-mediated cases.

6. Aplastic Anaemia

Drugs

Immunosuppressive Therapy

Examples:

• Antithymocyte globulin (ATG)
• Cyclosporine
• Eltrombopag

Mechanism

ATG:

• Suppresses T lymphocytes that attack bone marrow stem cells.

Cyclosporine:

• Inhibits calcineurin.
• Reduces IL-2 production and T-cell activation.

Eltrombopag:

• Stimulates thrombopoietin receptors.
• Promotes proliferation of hematopoietic stem cells.

7. Blood Transfusion

Packed Red Blood Cells (PRBCs)

Mechanism

• Immediately increases circulating red blood cells.
• Improves oxygen delivery to tissues.
• Used for severe or symptomatic Anaemia or acute blood loss.

Mechanism of Action of Common Drug Classes

Supportive Nutritional Supplements

These are commonly used alongside treatment when deficiencies are present:

Key Clinical Points

• Iron deficiency Anaemia: Oral iron is first-line; IV iron is preferred when rapid repletion is needed or oral therapy is ineffective or not tolerated.
• Vitamin B12 deficiency: Always replace vitamin B12 before or alongside folate if both deficiencies are suspected, as folate alone can correct the Anaemia while allowing neurological damage from B12 deficiency to progress.
• Folate deficiency: Folic acid or L-5-MTHF effectively restores DNA synthesis and red blood cell production.
• Anaemia of chronic kidney disease: ESAs are typically used when endogenous erythropoietin production is inadequate, provided iron stores are sufficient.
• Severe symptomatic Anaemia or acute blood loss: PRBC transfusion provides immediate improvement in oxygen-carrying capacity but does not treat the underlying cause.

·        Commonly Used Drugs in Clinical Practice (Summary)

Intravenous Iron Preparations

Vitamin B12 Preparations

Folic Acid Preparations

Erythropoiesis-Stimulating Agents (ESAs)

Corticosteroids

Immunosuppressants

Hematopoietic Agents

Blood Products

Commonly Prescribed Brands for Iron Deficiency Anaemia in India

Key Brands Frequently Encountered in Indian Practice

• Iron deficiency Anaemia (oral): Biosorb Fe, Orofer-XT, Autrin, Fefol, Dexorange, Ferium-LP
• Intravenous iron: Encicar, Orofer S, Ferinject
• Vitamin B12 deficiency: Nurokind, Methycobal, Neurobion
• Folate deficiency: Folvite
• CKD-associated Anaemia: Wepox, Cresp, Mircera
• Autoimmune hemolytic Anaemia: Omnacortil, Wysolone
• Aplastic Anaemia: Panimun Bioral, Revolade, Reditux

Precautions and Lifestyle Changes for Managing Anaemia

Successful management of Anaemia requires not only medications but also appropriate dietary habits, lifestyle modifications, and regular monitoring. These measures help improve hemoglobin levels, enhance treatment effectiveness, prevent recurrence, and improve overall health.

Precautions

1. Take Medications Correctly

Oral Iron Supplements

• Take iron supplements on an empty stomach if tolerated for better absorption.
• If stomach irritation occurs, take them with a light meal (avoid dairy products at the same time).
• Continue iron therapy for at least 3 months after hemoglobin normalizes to replenish iron stores.
• Do not stop treatment early even if symptoms improve.

2. Improve Iron Absorption

Take iron supplements with:

• Orange juice
• Lemon water
• Vitamin C supplements
• Other vitamin C-rich fruits

Vitamin C converts ferric iron (Fe³⁺) into ferrous iron (Fe²⁺), which is absorbed more efficiently.

3. Avoid Foods and Drinks That Reduce Iron Absorption

Avoid consuming these within 1–2 hours before or after taking iron:

• Tea
• Coffee
• Milk and dairy products
• Calcium supplements
• High-fiber cereals
• Antacids

These substances can significantly reduce iron absorption.

4. Follow the Prescribed Dose

• Do not self-medicate with high-dose iron.
• Excess iron can accumulate and damage organs such as the liver and heart.
• Always use iron supplements under medical supervision.

5. Identify and Treat the Underlying Cause

Treatment of Anaemia should include management of the underlying condition, such as:

• Heavy menstrual bleeding
• Gastrointestinal ulcers or bleeding
• Worm infestations
• Chronic kidney disease
• Vitamin B12 or folate deficiency

6. Regular Monitoring

Your healthcare provider may periodically check:

• Hemoglobin (Hb)
• Complete Blood Count (CBC)
• Serum ferritin
• Serum iron
• Vitamin B12
• Folate levels
• Reticulocyte count (in selected cases)

7. Prevent Infections

Patients with severe Anaemia or bone marrow disorders should:

• Practice good hand hygiene.
• Stay up to date with recommended vaccinations.
• Seek medical attention promptly for fever or signs of infection.

Lifestyle Changes

1. Eat an Iron-Rich Diet

Heme Iron (Better Absorbed)

• Lean red meat
• Liver (if appropriate)
• Chicken
• Fish
• Eggs

Non-Heme Iron

• Spinach
• Fenugreek leaves
• Amaranth
• Lentils
• Chickpeas
• Kidney beans
• Soybeans
• Tofu
• Pumpkin seeds
• Sesame seeds
• Dry fruits (raisins, dates)
• Iron-fortified cereals

2. Increase Vitamin C Intake

Vitamin C enhances iron absorption.

Foods rich in vitamin C include:

• Oranges
• Sweet lime
• Guava
• Kiwi
• Strawberries
• Amla (Indian gooseberry)
• Tomatoes
• Bell peppers
• Broccoli

3. Eat Foods Rich in Vitamin B12

Especially important for vegetarians and older adults.

Examples:

• Milk
• Yogurt
• Cheese
• Eggs
• Fish
• Chicken
• Meat
• Fortified breakfast cereals

4. Consume Folate-Rich Foods

Examples:

• Spinach
• Broccoli
• Asparagus
• Green peas
• Avocado
• Citrus fruits
• Beans
• Lentils

5. Maintain Adequate Protein Intake

Protein supports hemoglobin production and red blood cell formation.

Good sources:

• Eggs
• Milk
• Fish
• Chicken
• Pulses
• Soy products
• Nuts

6. Stay Hydrated

Adequate hydration supports normal blood circulation and overall health.

Aim for 2–3 liters of water daily, unless fluid restriction has been advised for another medical condition.

7. Exercise Regularly

• Walking
• Yoga
• Light cycling
• Stretching

Avoid strenuous exercise until hemoglobin levels improve, especially if Anaemia is moderate to severe.

8. Get Adequate Sleep

Aim for 7–9 hours of quality sleep each night to support recovery and reduce fatigue.

9. Avoid Smoking and Excess Alcohol

• Smoking reduces oxygen delivery to tissues and can worsen symptoms.
• Excessive alcohol intake may impair bone marrow function and contribute to nutritional deficiencies.

10. Maintain a Healthy Body Weight

A balanced diet and healthy weight support optimal blood cell production and reduce the risk of nutritional deficiencies.

Foods to Include

Foods to Limit Around Iron Supplements

Special Advice for Pregnant Women

• Take prescribed iron and folic acid supplements regularly.
• Eat a balanced, nutrient-rich diet.
• Attend scheduled antenatal visits.
• Have hemoglobin checked as recommended by your healthcare provider.
• Report symptoms such as severe fatigue, dizziness, or breathlessness promptly.

 Common Nutraceutical Combinations Used in Iron Deficiency Anaemia

1. Iron + Folic Acid

• First-line combination for iron deficiency Anaemia, especially during pregnancy.
• Examples: Orofer XT, Livogen XT, Fericip XT

2. Iron + Folic Acid + Vitamin B12

• Useful when mixed nutritional deficiencies are suspected.
• Examples: Autrin XT, Fericip XT

3. Liposomal Iron + L-5-MTHF + Vitamin B12 + Vitamin B6 + Vitamin C

Advantages:

• Better gastrointestinal tolerance
• Higher iron bioavailability
• Enhanced red blood cell production
• Improved patient compliance

4. Iron + Vitamin C

• Vitamin C converts ferric iron to the more absorbable ferrous form, improving iron absorption.
• Commonly available as fixed-dose combinations or prescribed separately.

5. Iron + Zinc + Copper + Vitamins

• Used in patients with multiple nutritional deficiencies or chronic malnutrition.

Supplements by Type of Anaemia

DISCLAIMER - All details provided regarding diseases and medicines have been collated from sources in the public domain and are for general awareness purposes only. This information does not constitute medical advice. It is strongly advised not to depend on online information and to always consult a qualified Medical Doctor for a better understanding of any disease, its symptoms, and its treatment. DO NOT SELF MEDICATE under any circumstances. Medicines should only be consumed as prescribed by a registered medical practitioner; a valid prescription may be required for scheduled drugs as per applicable Indian law. GENHEALTH shall not be held responsible for any action taken based on the information provided on this platform. In case of a medical emergency, please contact your nearest hospital or dial emergency services immediately.