Chloroquine

Presciption Medicine
  • Effective against some malaria strains
  • Used in both prevention and treatment
  • Used in autoimmune conditions with Hydroxychloroquine
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Product Information

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Medically Verified
Dr. Cosmin Alexandru | Expert Transtoyou

Dr. Cosmin Alexandru

General Medicine Doctor | CUIM: 2791492305
Reviewed on: 25 May, 2025 View Profile

Dr. Cosmin Alexandru has 20+ years in emergency and family medicine, now serving at County Clinic Hospital Sibiu.

Chloroquine and Hydroxychloroquine is an antimalarial medication used for the prevention and treatment of malaria caused by Plasmodium vivax, Plasmodium ovale, and Plasmodium malariae. It is not effective against most strains of Plasmodium falciparum due to widespread resistance, but remains a reliable option in regions where susceptible strains are still present.

Chloroquine works by interfering with the parasite’s ability to break down and use red blood cells. This disrupts its life cycle and helps eliminate the infection from the bloodstream. In addition to its antimalarial properties, chloroquine is occasionally used for certain autoimmune conditions such as lupus or rheumatoid arthritis under medical supervision.

The medication is typically taken once a week for malaria prevention, starting one to two weeks before entering an endemic area and continuing for four weeks after departure. For treatment of active malaria, chloroquine is taken over a few consecutive days at a higher dose. The exact dosing depends on the patient’s weight, age, and whether the goal is prevention or treatment.

Chloroquine is generally well tolerated, but side effects may include stomach upset, headache, blurred vision, or itching. Rare but serious side effects include changes in heart rhythm or eye damage with prolonged use. Regular eye check-ups are recommended for individuals using chloroquine long-term for non-malarial indications.

It is important to verify that chloroquine is appropriate for the destination, as resistance patterns vary widely across malaria zones.

General Information

What is [Product name]?

Chloroquine is a medication used to prevent and treat certain types of malaria. It may also be used for autoimmune conditions under medical guidance. 

What is [Product name] used for?

It is used for malaria prevention and treatment, especially in areas where the parasite is still sensitive to chloroquine. 

How does [Product name] work in the body?

It interferes with the malaria parasite’s ability to digest red blood cells, leading to the parasite's death. 

What is the general recommended dosage for [Product name]?

For prevention, it is taken once weekly. For treatment, it is taken daily for several days depending on the protocol. 

How long does it take to feel the effects of [Product name]?

For malaria treatment, symptoms typically improve within a few days. For prevention, it provides protection once therapeutic levels are reached. 

What should I do if I forget a dose?

Take it as soon as possible unless it is almost time for the next scheduled dose. Do not double the dose. 

Safety & Side Effects

What are the possible side effects of [Product name]?

Possible effects include nausea, headache, itching, or blurred vision. Long-term use may affect the eyes or heart rhythm. 

What are the contraindications of [Product name]?

It should not be used by individuals with retinal disorders, known allergies to the drug, or certain heart conditions. 

Can I combine [Product name] with other medications?

Yes, but inform your doctor. Some medications may interact and increase the risk of side effects. 

Can I use this if I am pregnant or breastfeeding?

Yes, it may be used during pregnancy for malaria prevention, but always consult your provider first. 

Is it safe to drink alcohol while using [Product name]?

Moderate alcohol use is usually safe, but it may worsen nausea or dizziness in some people. 

Usage & Administration

How do I administer [Product name]?

Take the tablet with food or a drink to reduce stomach upset. 

How should I store [Product name] properly?

Store at room temperature in a dry place, away from direct light and heat. 

Should I take [Product name] with food?

Yes, taking it with food helps minimise stomach discomfort. 

Can I crush or dissolve the tablet in water?

Check with your pharmacist. Some formulations can be crushed, but others must be swallowed whole. 

Ordering & Delivery

How can I order [Product name] online?

To get [Product name], fill out a medical form or book a video consult with a doctor via Transtoyou. After approval, your prescription is sent to the pharmacy for fast delivery.

Do I need a prescription for [Product name]?

[Product name] requires a valid prescription, which is issued after the doctor reviewed your answered in the medical questionnaire or via a video consultation with the doctor.

How fast is [Product name] delivered?

After approval by a doctor from Transtoyou, the prescription of [Product name] is forwarded to an affiliated pharmacy and typically shipped within 1–2 working days.

Can I return [Product name] if I change my mind?

For safety and legal reasons prescription medication (RX) and in this case [Product name] is non-returnable once shipped. 

Product Documentation

All Variants

Select a variant to see specific documentation. Leaflets are provided for information purposes only. The official leaflet in the language of the country of delivery is supplied with the order.

EN

Chloroquine 250 mg

122.54 KB Feb 2026 Multi-variant
Informational leaflet with dosage instructions and safety information.
Download
EN

Hydroxychloroquine 200 mg

133.76 KB Feb 2026 Multi-variant
Informational leaflet with dosage instructions and safety information.
Download
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