Table of Contents
- What is Calcium Folinate?
- Conditions Treated with Calcium Folinate
- How Calcium Folinate Works
- How Calcium Folinate is Administered
- Combination Therapies
- Current Clinical Trials
- Potential Side Effects
What is Calcium Folinate?
Calcium folinate, also known as leucovorin calcium, L-leucovorin, L-folinic acid (calcium salt), or L-folinate (calcium salt), is an important medication used in various medical treatments[1][2]. It is a form of folic acid that can be easily used by the body. Calcium folinate plays a crucial role in many bodily processes, including the production of DNA and red blood cells.
Conditions Treated with Calcium Folinate
Calcium folinate is used to treat or manage several conditions:
- Autism Spectrum Disorder (ASD): Some clinical trials are investigating the use of calcium folinate to improve language and social communication skills in young children with ASD[1][2].
- Cancer: It is often used in combination with other drugs to treat various types of cancer, including:
- Osteosarcoma: It is used in combination with high-dose methotrexate therapy for bone cancer[7].
- Toxoplasmosis: Calcium folinate is used alongside other medications to treat this parasitic infection[8].
How Calcium Folinate Works
Calcium folinate works in different ways depending on the condition being treated:
- In cancer treatment, it helps to protect healthy cells from the harmful effects of certain chemotherapy drugs, such as methotrexate[7].
- For ASD, researchers believe it may help improve brain function and communication skills, though the exact mechanism is still being studied[1][2].
- In toxoplasmosis treatment, it helps to enhance the effectiveness of other medications used to fight the infection[8].
How Calcium Folinate is Administered
Calcium folinate can be given in several ways:
- Intravenous (IV) infusion: The medication is delivered directly into the bloodstream through a vein. This is common in cancer treatments[9].
- Oral medication: It can be taken by mouth in the form of tablets or liquid[9][1].
The dosage and frequency of administration depend on the specific condition being treated and the individual patient’s needs. For example, in some cancer treatments, it might be given every two weeks[4], while in ASD studies, it’s administered daily[1][2].
Combination Therapies
Calcium folinate is often used in combination with other medications to enhance treatment effectiveness:
- In cancer treatment, it’s frequently combined with drugs like 5-fluorouracil, oxaliplatin, and irinotecan[4][6].
- For toxoplasmosis, it’s used alongside pyrimethamine[8].
- In osteosarcoma treatment, it’s used with high-dose methotrexate[7].
Current Clinical Trials
Several ongoing clinical trials are exploring new uses for calcium folinate:
- Treatment of language and social communication deficits in young children with autism[1][2].
- Use in combination with new cancer treatments for pancreatic and colorectal cancers[5][6].
- Treatment of a rare genetic disorder called Spastic Paraplegia 56[9].
Potential Side Effects
While calcium folinate is generally well-tolerated, it may cause some side effects. These can vary depending on the condition being treated and other medications being used. Common side effects may include:
- Nausea and vomiting
- Diarrhea
- Fatigue
- Changes in blood cell counts
It’s important to note that many clinical trials are still evaluating the safety and efficacy of calcium folinate for various conditions[1][2][9]. Always consult with your healthcare provider about potential side effects and the best treatment options for your specific situation.




