cystadane
Cystadane (Betaine) is a medication used to treat Homocystinuria.
Betaine · by Recordati Rare
Key facts
- Active ingredient
- Betaine
- Form
- Powder
- Strength
- Betaine 1GM/SCOOPFUL
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- May treat
- homocystinuria
- Manufacturer
- Recordati Rare
- FDA application
- NDA020576
What is Cystadane?
From the FDA label:CYSTADANE (betaine anhydrous for oral solution) is an agent for the treatment of homocystinuria. It contains no ingredients other than anhydrous betaine. CYSTADANE is a white, granular, hygroscopic powder, which is diluted in water and administered orally. The chemical name of betaine anhydrous powder is trimethylglycine. It has a molecular weight of 117.15. The structural formula is: Betaine anhydrous structural formula
How to use
Adults and Pediatric Patients 3 Years of Age and Older The recommended dosage is 6 grams per day, administered orally in divided doses of 3 grams twice daily. ( 2.1 ) Pediatric Patients Less than 3 Years of Age The recommended starting dosage is 100 mg/kg/day, administered orally in divided doses of 50 mg/kg twice daily, and then increased weekly by 50 mg/kg increments. ( 2.1 ) Monitor patient response by plasma homocysteine concentrations. ( 2.1 ) Increase the dosage gradually until the plasma total homocysteine concentration is undetectable or present only in small amounts. ( 2.1 ) Preparation and Administration Instructions Prescribed amount of CYSTADANE should be measured with the measuring scoop provided and then dissolved in 4 to 6 ounces of water, juice, milk, or formula until completely dissolved, or mixed with food for immediate ingestion. ( 2.2 ) 2.1 Dosage Therapy with CYSTADANE should be directed by physicians knowledgeable in the management of patients with homocystinuria. Adults and Pediatric Patients 3 Years of Age and Older The recommended dosage is 6 grams per day, administered orally in divided doses of 3 grams twice daily. Pediatric Patients Less than 3 Years of Age The recommended starting dosage is 100 mg/kg/day divided in twice daily doses, and then increased weekly by 50 mg/kg increments. Monitoring Monitor patient response to CYSTADANE by homocysteine…
Side effects
The following serious adverse reactions are described elsewhere in labeling: Hypermethioninemia and cerebral edema in patients with CBS deficiency [ see Warnings and Precautions ( 5.1 ) ]. Most common adverse reactions (> 2%) are: nausea and gastrointestinal distress, based on physician survey. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Recordati Rare Diseases Inc. at 1-888-575-8344, or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The assessment of clinical adverse reactions is based on a survey study of 41 physicians, who treated a total of 111 homocystinuria patients with CYSTADANE. Adverse reactions were retrospectively recalled and were not collected systematically in this open-label, uncontrolled, physician survey. Thus, this list may not encompass all types of potential adverse reactions, reliably estimate their frequency, or establish a causal relationship to drug exposure. The following adverse reactions were reported (Table 1): Table 1: Number of Patients with Adverse Reactions to CYSTADANE by Physician Survey Adverse Reactions Number of Patients Nausea 2…
Warnings
Important safety information
Hypermethioninemia in Patients with CBS Deficiency: CYSTADANE may worsen elevated plasma methionine concentrations and cerebral edema has been reported. Monitor plasma methionine concentrations in patients with CBS deficiency. Keep plasma methionine concentrations below 1,000 micromol/L through dietary modification and, if necessary, a reduction of CYSTADANE dosage. ( 5.1 ) 5.1 Hypermethioninemia in Patients with CBS Deficiency Patients with homocystinuria due to cystathionine beta-synthase (CBS) deficiency may also have elevated plasma methionine concentrations. Treatment with CYSTADANE may further increase methionine concentrations due to the remethylation of homocysteine to methionine. Cerebral edema has been reported in patients with hypermethioninemia, including patients treated with CYSTADANE [ see Adverse Reactions ( 6.2 ) ]. Monitor plasma methionine concentrations in patients with CBS deficiency. Plasma methionine concentrations should be kept below 1,000 micromol/L through dietary modification and, if necessary, a reduction of CYSTADANE dosage.
Who should not take Cystadane
None. None ( 4 )
Overdose — what happens if you take too much
There is no information on CYSTADANE overdose in humans. In an acute toxicology study in rats, death occurred frequently at doses equal to or greater than 10 g/kg.
U.S. Poison Control: call or text 1-800-222-1222 (free, 24/7). In an emergency call 911. From the FDA label; not medical advice.
May treat (source: NIH RxClass)
Dosage forms
Powder
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
Ask for the generic
Same active ingredient, far cheaper. Is there a generic? →
Request a 90-day supply
Bulk fills usually lower the per-dose price vs monthly refills.
Use copay cards
Manufacturer copay cards & patient-assistance programs — especially for brand drugs.
Compare alternatives
A same-class option may cost less. See alternatives →
Frequently asked questions
- What does Cystadane treat?
- Cystadane (Betaine) may be used to treat homocystinuria, 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.
- Is there a coupon or discount for Cystadane?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Cystadane. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Cystadane?
- Cystadane is marketed by Recordati Rare. You can see Recordati Rare's full profile, rating, and other products on pharmaranks.
- Is Cystadane a brand-name or generic drug?
- Cystadane is a brand-name product with the active ingredient Betaine.
- Is Cystadane available over the counter?
- No. Cystadane 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 Cystadane come in?
- Cystadane is currently marketed as powder, per the FDA's National Drug Code Directory.
- Is Cystadane FDA-registered?
- Cystadane is on record with the U.S. FDA under application number NDA020576. You can verify this on its official FDA label.
- Is Cystadane safe?
- There's no single safe-or-not verdict, and we don't yet have a composite recall-safety score for Cystadane. Review its FDA-label side effects and warnings below, and always consult a licensed professional.
- What are the side effects of Cystadane?
- Cystadane's side effects are taken directly from its FDA label. From the label: The following serious adverse reactions are described elsewhere in labeling: Hypermethioninemia and cerebral edema in patients with CBS deficiency [ see Warnings and Precautions ( 5.1 ) ]. Most common adverse reactions (> 2%) are: nausea and gastrointestinal distress, based on physician survey.… Both common and serious reactions are documented in full on this page. This is general reference from the FDA, not medical advice — always consult a professional.
Clinical content sourced from the FDA label via openFDA (U.S. FDA). View the FDA label on DailyMed → Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
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