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Active pharmaceutical ingredient

Pyrimethamine

Pyrimethamine is a potent antiparasitic agent primarily used in the treatment and prevention of certain parasitic infections, such as toxoplasmosis and malaria.

Compounded to order
Prescription required
Warwick, Rhode Island

About this ingredient

Pyrimethamine is a potent antiparasitic agent primarily used in the treatment and prevention of certain parasitic infections, such as toxoplasmosis and malaria. As a folic acid antagonist, it works by inhibiting the enzyme dihydrofolate reductase, which is crucial for the synthesis of tetrahydrofolate, a form of folic acid necessary for the production of nucleic acids in parasites.

This mechanism effectively disrupts the replication and survival of the parasites, making pyrimethamine an essential component in combination therapies. In clinical settings, pyrimethamine is often used in conjunction with other agents to enhance its efficacy and reduce the risk of resistance development.

Its role in compounded formulations allows for tailored dosing and delivery methods, optimizing therapeutic outcomes for patients with specific needs. Prescribers should be aware of potential side effects, such as bone marrow suppression, and monitor patients accordingly, especially those with pre-existing conditions or those taking other medications that may interact with pyrimethamine.

Due to its critical function in managing parasitic infections, pyrimethamine remains a valuable tool in the arsenal of healthcare providers, offering targeted treatment options that can be customized through compounding to meet individual patient requirements.

Available formulations

Compounded formulations containing this ingredient

Each of these is compounded to order at our Warwick, Rhode Island pharmacy and requires a prescription.

We do not have a patient page for this ingredient yet. That does not mean we cannot make it. Bayview compounds this ingredient to a prescriber's order, and our full compounding formulary lists every preparation we make. Viewing the formulary requires a prescriber account.

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Compounding formulary

Formulas we compound with this ingredient

A sample of preparations from our formulary. Strengths and dose forms are customised to the prescription.

Common questions

Frequently asked questions

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Related

Related active ingredients

Other salt forms of this molecule, and ingredients commonly compounded alongside it.

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Important information

This page describes an active pharmaceutical ingredient, not a finished drug product. Bayview Pharmacy compounds preparations containing it only on a prescriber's order for an individual patient.

Compounded preparations are not FDA-approved, and the FDA has not evaluated them for safety, effectiveness, or manufacturing quality. Nothing on this page is a claim that any preparation is effective for any condition.

A valid prescription is required. Availability depends on Bayview's licensure in your state. This page is general information, not medical advice — discuss your situation with a licensed healthcare provider.

Talk to a compounding pharmacist

Our pharmacists work with prescribers to build preparations around a patient's dose, form and tolerances. Ask us what is possible with this ingredient.