methyldopa

Storing Methyldopa, and how long it keeps

Quoted from this product’s own FDA label. Storage belongs to the product and its device, not to the drug in general — a pen and a tablet of the same medicine are kept completely differently.

• “Store Methyldopa Tablets at controlled room temperature 20° to 25°C (68° to 77°F) [see USP].”

How long does Methyldopa stay in your body?

The elimination half-life of methyldopa is about 105 minutes (roughly 1.75 hours) — the time it takes the body to clear about half of it. As a rule of thumb, a medicine is mostly gone after roughly 4 to 5 half-lives, though this varies from person to person with age and kidney or liver function. The label reports a single plasma half-life of methyldopa (105 minutes) and does not separate a distribution phase from a terminal phase, so this figure is the plasma/elimination half-life as given. Important: methyldopa's antihypertensive effect is produced by an ACTIVE central metabolite (alpha-methylnorepinephrine), and its pharmacodynamic duration far outlasts the parent's short plasma half-life — blood pressure returns to pretreatment levels only within 24-48 hours after withdrawal. The label does NOT quantify the metabolite's half-life, so no number is given for it. Kidney impairment: renal clearance (about 130 mL/min in normal subjects) is diminished in renal insufficiency, which prolongs the half-life. The label does not state separate half-life figures for older adults or hepatic impairment.

This is general information, not medical advice. It doesn’t tell you when a drug test would read negative (tests detect substances for different, often longer, windows) or when it’s safe to take another dose — ask your pharmacist or prescriber. Source: Methyldopa tablet — DailyMed label (Clinical Pharmacology, Pharmacokinetics and Metabolism).

Frequently asked questions

What does Methyldopa treat?

Methyldopa (Methyldopa) may be used to treat hypertension, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.

How does Methyldopa work?

Methyldopa is a central alpha-2 adrenergic agonist. These drugs activate alpha-2 receptors in the brainstem, which tells the nervous system to send out less norepinephrine and reduce sympathetic (fight-or-flight) signaling to the body. With less of this stimulation, blood vessels relax and heart rate slows, lowering blood pressure.

How is Methyldopa rated?

pharmaranks gives Methyldopa a composite score of 3.5 out of 5, currently based on 1 weighted source (FDA regulatory recall-safety data weighted highest). See our methodology at /how-we-rate.

How much does Methyldopa cost?

Nobody can tell you what you will pay — your price is set by your insurer's formulary, your deductible and the pharmacy's markup, and none of those are published. What IS published is what the pharmacy paid to acquire it: about $225.00 for 30, per the CMS NADAC survey. Treat that as the floor, not the quote — ask the pharmacist for the cash price as well as your copay, because for cheap generics the cash price often wins. Pharmacies pay less for a same-class option, Clonidine Hydrochloride — about $1.05 on the same basis.

Is there a coupon or discount for Methyldopa?

pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Methyldopa. To pay less, Methyldopa is already a generic — usually the lowest-cost version — so the main levers are comparing cash prices between pharmacies and using a pharmacy discount-card service. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.

Who makes Methyldopa?

Methyldopa is marketed by Heritage Pharma. You can see Heritage Pharma's full profile, rating, and other products on pharmaranks.

Is Methyldopa a brand-name or generic drug?

Methyldopa is a generic medication; its active ingredient is Methyldopa. Generics contain the same active ingredient as the brand-name original and are usually lower cost.

Is Methyldopa available over the counter?

No. Methyldopa is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.

What forms does Methyldopa come in?

Methyldopa is currently marketed as tablet, per the FDA's National Drug Code Directory.

What class of drug is Methyldopa?

Methyldopa is classified as central alpha-2 adrenergic agonist, per the FDA's Established Pharmacologic Class.

Is Methyldopa FDA-registered?

Methyldopa is on record with the U.S. FDA under application number ANDA070343. You can verify this on its official FDA label.

Has Methyldopa been recalled by the FDA?

Methyldopa has no FDA recalls recorded under its own application in the openFDA enforcement database. Its recall-safety score reflects its manufacturer's overall recall record. This is general reference, not medical advice — check the FDA recall database for the latest alerts.

Is Methyldopa safe?

There's no single safe-or-not verdict. pharmaranks gives Methyldopa a recall-safety score of 70/100, based on its FDA recall history (no recalls under its own FDA application) — not an efficacy or side-effect rating. Review its FDA-label side effects and warnings before use, and always consult a licensed professional.