Effects on the ADCS-ADL Tell your doctor about all the medicines you take, Memantine hydrochloride tablet, film coated. This information does not take the place of talking to your doctor about your medical condition or your treatment. Memantine produced no evidence of genotoxic potential when evaluated in the in vitro S. typhimurium or E. coli reverse mutation assay, an in vitro chromosomal aberration test in human lymphocytes, an in vivo cytogenetics assay for chromosome damage in rats, and the in vivo mouse micronucleus assay. No dosage adjustment is recommended for patients with mild and moderate renal impairment. Distribution The no- effect dose for developmental toxicity was the lowest dose tested (15 mg/kg/day). Namenda Titration Pak 5 mg-10 mg tablets in a dose pack. In Study A, the adverse reactions in the memantine group (n=56) that were reported in at least 5% of patients and at least twice the frequency of the placebo group (N=58) are listed in Table 2: Table 2: Study A Commonly Reported Adverse Reactions with a Frequency 5% and. The clearance of memantine was reduced by about 80% under alkaline urine conditions at pH 8. Signs and symptoms most often accompanying memantine overdosage in clinical trials and from worldwide marketing experience, alone or in combination with other drugs and/or alcohol, include agitation, asthenia, bradycardia, confusion, coma, dizziness, ECG changes, increased blood pressure, lethargy, loss of consciousness, psychosis, restlessness, slowed movement, somnolence, stupor, unsteady gait, visual hallucinations, vertigo, vomiting, and weakness. No dosage adjustment is needed in patients with mild or moderate hepatic impairment. What are the ingredients in memantine hydrochloride tablets? There was no evidence of carcinogenicity in a 113-week oral study in mice at doses up to 40 mg/kg/day (10 times the maximum recommended human dose [MRHD] on a mg/m 2 basis). The no-effect dose for apoptosis and neuronal degeneration was 8 mg/kg/day. The higher no-effect dose (6 mg/kg/day) is approximately 3 times the MRHD of memantine hydrochloride tablets on a mg/m 2 basis. Study Outcome Measures: In each U.S. study, the effectiveness of memantine hydrochloride was determined using both an instrument designed to evaluate overall function through caregiver-related assessment, and an instrument that measures cognition. 2 DOSAGE AND ADMINISTRATION 2.1 Recommended Dosing - The dosage of memantine hydrochloride extended-release capsules shown to be effective in a controlled clinical trial is 28 mg once daily. Figure 1 shows the time course for the change from baseline in the ADCS-ADL score for patients in the two treatment groups completing the 28 weeks of the study. Safety and effectiveness in pediatric patients have not been established. Remove the syringe from the bottle and swallow the oral solution directly from the syringe. Polygen, NDC 52605-072-16 The no-effect levels of the combination were associated with clinically relevant plasma Memantine and donepezil exposures. Chartwell RX, LLC. The pharmacokinetics of memantine hydrochloride in young and elderly subjects are similar. Study 3 (Twelve-Week Study) The curves show that both patients assigned to Memantine hydrochloride and placebo have a wide range of responses and generally show deterioration (a negative change in ADCS-ADL compared to baseline), but that the Memantine hydrochloride group is more likely to show a smaller decline or an improvement. For patients randomized to Memantine hydrochloride, treatment was initiated at 5 mg once daily and increased weekly by 5 mg/day in divided doses to a dose of 20 mg/day (10 mg twice a day). Memantine, a non-competitive N-methyl D-aspartate (NMDA) receptor antagonist, is FDA-approved for use in the palliative management of moderate-to-severe Alzheimer's disease. Blood and Lymphatic System Disorders - agranulocytosis, leukopenia (including neutropenia), pancytopenia, thrombocytopenia, thrombotic thrombocytopenic purpura. Furthermore, memantine did not modify the serum glucose lowering effect of Glucovance , indicating the absence of a pharmacodynamic interaction. The chemical name for Memantine hydrochloride is 1-amino-3,5-dimethyladamantane hydrochloride with the following structural formula: Package insert / product label In a randomized, 12-week double-blind, placebo-controlled parallel study (Study A) in patients w ith autism, there was no statistically significant difference in the Social Responsiveness Scale (SRS) total raw score between patients randomized to Memantine (n=54) and those randomized to placebo (n=53). Imprinted in black ink AN on the cap and imprinted in black ink 1247 on the body. Do not use any tablets of Memantine hydrochloride tablets, USP that are damaged or show signs of tampering. The largest known ingestion of Memantine worldwide was 2.0 grams in a patient who took Memantine in conjunction with unspecified antidiabetic medications. Do not give Memantine hydrochloride tablets, USP to other people, even if they have the same condition. hydrochloride tablets may cause side effects, including: We comply with the HONcode standard for trustworthy health information. As in any cases of overdose, general supportive measures should be utilized, and treatment should be symptomatic. Drugs Highly Bound to Plasma Proteins Effects on the SIB Coadministration of Memantine with the AChE inhibitor donepezil HCl did not affect the pharmacokinetics of either compound. As in any cases of overdose, general supportive measures should be utilized, and treatment should be symptomatic. Memantine Hydrochloride Tablets, USP Gastrointestinal Disorders pancreatitis. Memantine showed low to negligible affinity for GABA, benzodiazepine, dopamine, adrenergic, histamine and glycine receptors and for voltage-dependent Ca 2+, Na + or K + channels. The recommended starting dose of Memantine hydrochloride is 5 mg once daily. Memantine hydrochloride tablets, USP may cause side effects, including: The most common side effects of Memantine hydrochloride tablets, USP include: These are not all the possible side effects of Memantine hydrochloride tablets, USP. Memantine hydrochloride is contraindicated in patients with known hypersensitivity to Memantine hydrochloride or to any excipients used in the formulation. Memantine did not affect the pharmacokinetics of the CYP2B6 substrate buproprion or its metabolite hydroxybuproprion. Figure 2: Cumulative percentage of patients completing 28 weeks of double-blind treatment with specified changes from baseline in ADCS-ADL scores. General information about the safe and effective use of Memantine hydrochloride tablets, USP. ADCS-ADL score for patients completing 24 weeks of treatment. Figure 7 shows the time course for the change from baseline in SIB score for the two treatment groups over the 24 weeks of the study. Because of early memantine-related mortality, the 30 and 45 mg/kg/day groups were terminated without further evaluation. Figure 4: Cumulative percentage of patients completing 28 weeks of double-blind treatment with specified changes from baseline in SIB scores. The curves show that both patients assigned to memantine hydrochloride /donepezil and placebo/donepezil have a wide range of responses, but that the memantine hydrochloride /donepezil group is more likely to show an improvement or a smaller decline. This can cause problems for the man and may cause problems in sexual relationships. Memantine should be administered with caution to patients with severe hepatic impairment as the pharmacokinetics of memantine have not been evaluated in that population. Effect of Other Drugs on Memantine Hydrochloride Tablets, USP. Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Absorption Selected from NATIONAL DRUG DATA FILE (NDDF) data included with permission and copyrighted by First Databank, Inc., 2019. Memantine induced neuronal lesions (vacuolation and necrosis) in the multipolar and pyramidal cells incortical layers III and IV of the posterior cingulate and retrosplenial neocortices in rats, similar to those which are known to occur in rodents administered other NMDA receptor antagonists. Because the plasma protein binding of Memantine is low (45%), an interaction with drugs that are highly bound to plasma proteins, such as warfarin and digoxin, is unlikely. Therefore, alterations of urine pH towards the alkaline condition may lead to an accumulation of the drug with a possible increase in adverse effects. The effectiveness of memantine hydrochloride as a treatment for patients with moderate to severe Alzheimers disease was demonstrated in 2 randomized, double-blind, placebo-controlled clinical studies (Studies 1 and 2) conducted in the United States that assessed both cognitive function and day to day function. Metabolism Figure 1 shows the time course for the change from baseline in the ADCS-ADL score for patients in the two treatment groups completing the 28 weeks of the study. Elimination of Memantine can be enhanced by acidification of urine. Generic name: Memantine hydrochloride A third study (Study 3), carried out in Latvia, enrolled patients with severe dementia, but did not assess cognitive function as a planned endpoint. This is the modified ADCS-ADL, which has a scoring range of 0 to 54, with the lower scores indicating greater functional impairment. Rx only Priligy is used to treat premature ejaculation in adult men aged 18 to 64 years. In a study in which rats were given daily oral doses of memantine for 14 days, the no-effect dose for neuronal necrosis was 6 times the maximum recommended human dose of 20 mg/day on a mg/m 2 basis. Last updated on Feb 1, 2023. Safety and effectiveness in pediatric patients have not been established. A subset of 19 items, including ratings of the patients ability to eat, dress, bathe, telephone, travel, shop, and perform other household chores has been validated for the assessment of patients with moderate to severe dementia. The no effect dose for developmental toxicity was the lowest dose tested (15 mg/kg/day). There may be new information. Figure 2 shows the cumulative percentages of patients from each of the treatment groups who had attained at least the change in the ADCS-ADL shown on the X axis. Furthermore, memantine did not affect the pharmacokinetics or pharmacodynamics of warfarin as assessed by the prothrombin INR. Polygen, NDC 52605-072-10 In a 24-week controlled clinical study in patients with moderate to severe Alzheimers disease, the adverse event profile observed with a combination of memantine hydrochloride and donepezil was similar to that of donepezil alone. Miscellaneous central nervous system agents, Drug class: miscellaneous central nervous system agents, have or have had bladder or kidney problems. The minimum recommended interval between dose increases is one week. No dosage adjustment is needed in patients with mild or moderate renal impairment. 5 WARNINGS AND PRECAUTIONS 5.1 Genitourinary Conditions Gastrointestinal Disorders - pancreatitis. If a patient misses a single dose of memantine, that patient should not double up on the next dose. Memantine hydrochloride tablets can be taken with food or without food. The next dose should be taken as scheduled. Memantine has linear pharmacokinetics over the therapeutic dose range. Fatal outcome has been very rarely reported with memantine, and the relationship to memantine was unclear. A statistically significant treatment difference at 12 weeks that favored memantine hydrochloride over placebo was seen on both primary efficacy measures. Memantine hydrochloride tablets, USP 10 mg are supplied as white to off-white, capsule-shaped, film coated tablet, debossed with CE on one side and 75 on the other side. Figure 7 shows the time course for the change from baseline in SIB score for the two treatment groups over the 24 weeks of the study. 10 mg Tablet: Grey, capsule-shaped, biconvex, film-coated tablet debossed with P on one side and 72 on the other side. A third study (Study 3), carried out in Latvia, enrolled patients with severe dementia, but did not assess cognitive function as a planned endpoint. are pregnant or plan to become pregnant. other NMDA antagonists such as amantadine, ketamine, and dextromethorphan, medicines that make your urine alkaline such as carbonic anhydrase inhibitors and sodium bicarbonate. In animals in which Memantine (0, 1, 3, 8, or 15 mg/kg/day) was orally administered on PNDs 7-70, adverse neurobehavioral effects (increased locomotor motor activity, increased auditory startle response and decreased habituation, and deficit in learning and memory) were observed at all but the lowest dose tested. This dose will be slowly raised over a 4-week period to 20 mg by mouth twice a day. Figure 6: Cumulative percentage of patients completing 24 weeks of double-blind treatment with specified changes from baseline in ADCS-ADL scores. Adverse neurobehavioral effects (decreased auditory startle habituation) were observed at the high dose. are breastfeeding or plan to breastfeed. Figure 5 shows the time course for the change from baseline in the ADCS-ADL score for the two treatment groups over the 24 weeks of the study. Using an analysis based on all patients and carrying their last study observation forward (LOCF analysis), memantine hydrochloride treatment was statistically significantly superior to placebo. The terminal elimination half-life increased by 18%, 41%, and 95% in subjects with mild, moderate, and severe renal impairment, respectively, compared to healthy subjects. Before you take Memantine hydrochloride tablets, USP, tell your doctor if you: Tell your doctor about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements. The combined use of memantine hydrochloride with other NMDA antagonists (amantadine, ketamine, and dextromethorphan) has not been systematically evaluated and such use should be approached with caution. There is no evidence that memantine prevents or slows neurodegeneration in patients with Alzheimers disease. Memantine hydrochloride was evaluated in eight double-blind placebo-controlled trials involving a total of 1862 dementia (Alzheimers disease, vascular dementia) patients (940 patients treated with memantine hydrochloride and 922 patients treated with placebo) for a treatment period up to 28 weeks. Approximately 66% of patients were female and 91% of patients were Caucasian. The efficacy and safety data presented in the clinical trial sections were obtained from these patients. The next dose should be taken as scheduled. ; The 14 mg capsules are a yellow cap and dark green opaque body capsule, with "FLI 14 mg" black imprint on the yellow cap. Effects on the ADCS-ADL a R e por t ed a dv er se r eac t i ons l ea d i ng to d i s c on t i nu a t i on in m ore t h an one p a t i e nt in e i t h er tr ea t m e nt gr oup. Read More There is no evidence that Memantine prevents or slows neurodegeneration in patients with Alzheimer's disease. Drug class: Miscellaneous central nervous system agents. The following adverse reactions have been identified during post-approval use of memantine. The molecular formula is C12H21NHCl and the molecular weight is 215.76. Inactive ingredients: lactose monohydrate, microcrystalline cellulose, magnesium stearate and croscarmellose sodium. The next dose should be taken as scheduled. The higher no-effect dose for adverse developmental effects (6 mg/kg/day) is 3 times the MRHD of Memantine hydrochloride on a mg/m2 basis. A statistically significant treatment difference at 12 weeks that favored Memantine hydrochloride over placebo was seen on both primary efficacy measures. The primary efficacy measures were the care dependency subscale of the Behavioral Rating Scale for Geriatric Patients (BGP), a measure of day-to-day function, and a Clinical Global Impression of Change (CGI-C), a measure of overall clinical effect. Dosage should be reduced in patients with severe renal impairment [see Dosage and Administration (2)]. Memantine has not been studied in pediatric patients under 6 years of age or over 12 years of age. Do not take memantine hydrochloride tablets if you are allergic to memantine or any of the ingredients in memantine hydrochloride tablets. indicating greater functional impairment. Typical dosing for memantine (Nameda) Immediate-release (IR) tablets and oral liquid: The typical starting dose is 5 mg by mouth once a day. Figure 8: Cumulative percentage of patients completing 24 weeks of double-blind treatment with specified changes from baseline in SIB scores. We comply with the HONcode standard for trustworthy health information. The patient experienced coma, diplopia, and agitation, but subsequently recovered. Extended-release (XR) capsules: The typical starting dose is 7 mg by mouth once daily. How should I store memantinehydrochloride tablets? Memantine produced no evidence of genotoxic potential when evaluated in the in vitroS. The pharmacokinetics of Memantine hydrochloride tablets, USP in young and elderly subjects are similar. Memantine induced neuronal lesions (vacuolation and necrosis) in the multipolar and pyramidal cells in cortical layers III and IV of the posterior cingulate and retrosplenial neocortices in rats, similar to those which are known to occur in rodents administered other NMDA receptor antagonists. In addition the following inactive ingredients are also present as components of the film coat: hypromellose, titanium dioxide, macrogol/polyethylene glycol 400, FD&C yellow #6 and FD&C blue #2 (5 mg tablets), and hypromellose, titanium dioxide, macrogol/polyethylene glycol 400 and iron oxide black(10 mg tablets). Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. Memantine Hydrochloride Do not take Memantine hydrochloride tablets, USP for a condition for which it was not prescribed. In the randomized withdrawal study (Study B), the adverse reaction in patients randomized to placebo (n=160) and reported in at least 5% of patients and at twice the frequency of the full-dose memantine treatment group (n=157) was irritability (5.0% vs 2.5%). In addition, in vitro studies indicate that at concentrations exceeding those associated with efficacy, memantine does not induce the cytochrome P450 isozymes CYP1A2, -2C9, -2E1 and -3A4/5. In Study A, the adverse reactions in the Memantine group (n=56) that were reported in at least 5% of patients and at least twice the frequency of the placebo gr oup (N=58) are listed in Table 2: Table 2: Study A Commonly Reported Adverse Reactions with a Frequency 5% and. Using an LOCF analysis, Memantine hydrochloride /donepezil treatment was statistically significantly superior to placebo/donepezil. Taking memantine hydrochloride tablets with other medicines can cause serious side effects. 5 WARNINGS AND PRECAUTIONS If you would like more information, talk with your doctor. Memantine Tablets Prescribing Information, Discontinuations due to adverse reactions, Effect of Memantine on the Metabolism of Other Drugs. The dose should be increased in 5 mg increments to 10 mg/day (2.5 mL twice daily), 15 mg/day (2.5 mL and 5 mL as separate doses), and 20 mg/day (5 mL twice daily). In a second juvenile animal study, memantine (0, 1, 3, 8, 15, 30, and 45 mg/kg/day) was orally administered to male and female rats beginning on PND 7 and continuing for various periods during postnatal development. F i gu re 4 s ho ws t he c u m u l a t ive p e r ce n t a g es of p a t i e n ts f rom each t r ea t m e nt g ro up w ho h ad a tt a i n ed at l ea st t he m ea s u re of c h a nge in S IB s co re s ho wn on t he X a x i s. T he c u rv es s how t h at bo th p a t i e n ts a ss i gn ed to me m a n t i ne hydrochloride a nd p l acebo h ave a w ide r a nge of r e spo n s es a nd g e n e r a lly s how d e t e r io r a t io n, b ut t h at t he me m a n t i ne hydrochloride g ro up is mo re li k e ly to s how a s m a ll er d ec li ne or an i mp rov e m e n t. These reactions include: Adverse neurobehavioral effects (decreased auditory startle habituation) were observed at the high dose. 19, 20 . The easiest way to lookup drug information, identify pills, check interactions and set up your own personal medication records. double-blind treatment with specified changes from baseline in ADCS-ADL scores. The primary efficacy measures were the care dependency subscale of the Behavioral Rating Scale for Geriatric Patients (BGP), a measure of day-to-day function, and a Clinical Global Impression of Change (CGI-C), a measure of overall clinical effect. Oral administration of memantine (0, 2, 6, or 18 mg/kg/day) to rats from late gestation throughout lactation to weaning, resulted in decreased pup weights at the highest dose tested. The largest known ingestion of memantine worldwide was 2.0 grams in a patient who took memantine in conjunction with unspecified antidiabetic medications. The next dose should be taken as scheduled. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2-4% and 15-20%, respectively. Do not give memantine hydrochloride tablets to other people, even if they have the same condition. A target dose of 5 mg twice daily is recommended in patients with severe renal impairment (creatinine clearance of 5 29 mL/min based on the Cockcroft-Gault equation). It is not known if memantine hydrochloride is safe and effective in children. Memantine pharmacokinetics were evaluated following the administration of single oral doses of 20 mg in 8 subjects with moderate hepatic impairment (Child-Pugh Class B, score 7-9) and 8 subjects who were age-, gender-, and weight-matched to the hepatically-impaired subjects. The minimum recommended interval between dose increases is one week. Store Memantine hydrochloride tablets, USP at 20 to 25C (68 to 77F) [see USP Controlled Room Temperature]. Cardiac Disorders - cardiac failure congestive. Taking memantine hydrochloride tablets with certain other medicines may affect each other. Using an LOCF analysis, memantine hydrochloride /donepezil treatment was statistically significantly superior to placebo/donepezil. Because memantine is eliminated in part by tubular secretion, coadministration of drugs that use the same renal cationic system, including hydrochlorothiazide (HCTZ), triamterene (TA), metformin, cimetidine, ranitidine, quinidine, and nicotine, could potentially result in altered plasma levels of both agents. Adlarity (donepezil patches) and Aduhelm (aducanumab) have made headlines recently, but several other medications treat Alzheimer's-related dementia. Elimination F igu re 4: Cu mu la ti ve p e r cen tage of pa ti en ts co mp l e ting 28 w eeks of doub l e -b lind t r ea t m ent w ith sp ec ifi ed chang es f rom ba s e line in S IB s co r e s. In a study of 24 weeks duration, 404 patients with moderate to severe probable Alzheimers disease (diagnosed by NINCDS-ADRDA criteria, with Mini-Mental State Examination scores 5 and 14) who had been treated with donepezil for at least 6 months and who had been on a stable dose of donepezil for the last 3 months were randomized to Memantine hydrochloride or placebo while still receiving donepezil. Memantine hydrochloride tablets, USP, 10 mg: grey colored, capsule shaped, biconvex, film-coated tablet debossed with P on one side and 72 on the other side. The curves show that both patients assigned to Memantine hydrochloride /donepezil and placebo /donepezil have a wide range of responses and generally show deterioration, but that the Memantine hydrochloride /donepezil group is more likely to show a smaller decline or an improvement. If a patient misses a single dose of Memantine hydrochloride, that patient should not double up on the next dose. NAMENDA 10 mg tablet: capsule-shaped, film-coated tablets are gray, with the strength (10) debossed on one side and FL on the other. Oral doses of memantine 3, 6, 9, or 15 mg extended-release capsules were administered once daily to patients with weights < 20 kg, 20-39 kg, 40 to 59 kg and 60 kg, respectively. There was no change inMemantine exposure (based on Cmax and AUC) in subjects with moderate hepatic impairment ascompared with healthy subjects. Because the patients entered were a mixture of Alzheimers disease and vascular dementia, an attempt was made to distinguish the two groups and all patients were later designated as having either vascular dementia or Alzheimers disease, based on their scores on the Hachinski Ischemic Scale at study entry. Call your doctor for medical advice about side effects. Urine pH is altered by diet, drugs (e.g. Talk to your doctor about the best way to feed your baby if you take memantine hydrochloride. Hepatic Impairment Memantine hydrochloride extended-release capsules are indicated for the treatment of moderate to severe dementia of the Alzheimer's type. Memantine undergoes partial hepatic metabolism. Memantine HCl, USP occurs as a fine white to off-white powder and is soluble in water. No dosage adjustment is needed in patients with mild or moderate renal impairment. typhimurium or E. coli reverse mutation assay, an in vitro chromosomal aberration test in human lymphocytes, an in vivo cytogenetics assay for chromosome damage in rats, and the in vivo mouse micronucleus assay. In addition, in vitro studies indicate that at concentrations exceeding those associated with efficacy, Memantine does not induce the cytochrome P450 isozymes CYP1A2, -2C9, -2E1 and -3A4/5. Both studies showed that patients on memantine hydrochloride experienced significant improvement on both measures compared to placebo. In clinical trials of memantine hydrochloride, seizures occurred in 0.2% of patients treated with memantine hydrochloride and 0.5% of patients treated with placebo. Adverse developmental effects (decreased body weight, and skeletal ossification) were observed in the offspring of rats administered memantine during pregnancy at doses associated with minimal maternal toxicity. Mean AUC 0- increased by 4%, 60%, and 115% in subjects with mild, moderate, and severe renal impairment, respectively, compared to healthy subjects. The overall risk profile of Memantine in pediatric patients was generally consistent with the known risk profile in adults [see Adverse Reactions (6.1)]. Figure 7: Time course of the change from baseline in SIB score for patients completing 24 weeks of treatment. a At l ea st 1% i n c i d e n ce of a dv er se r eac t i ons l ea d i ng to pr e m a t ure d i s c on t i nu a t i o n. ANALYSIS(52605-071, 52605-072), LABEL(52605-071, 52605-072), MANUFACTURE(52605-071, 52605-072), PACK(52605-071, 52605-072), have or have had bladder or kidney problems. The SIB examines selected aspects of cognitive performance, including elements of attention, orientation, language, memory, visuospatial ability, construction, praxis, and social interaction. The highest dose tested is approximately 30 times the MRHD of memantine hydrochloride tablets on a mg/m 2 basis. Elimination of memantine can be enhanced by acidification of urine. Cardiac Disorders cardiac failure congestive. For patients randomized to memantine hydrochloride, treatment was initiated at 5 mg once daily and increased weekly by 5 mg/day in divided doses to a dose of 20 mg/day (10 mg twice a day). This copyrighted material has been downloaded from a licensed data provider. Decreased skeletal ossification in fetuses and decreased body weight in pups were observed at the highest dose tested. For this medicine, the following should be considered: Allergies Data sources include IBM Watson Micromedex (updated 5 June 2023), Cerner Multum (updated 5 June 2023), ASHP (updated 10 Apr 2023) and others. In addition, coadministration of Memantine with the antihyperglycemic drug Glucovance (glyburide and metformin HCl) did not affect the pharmacokinetics of Memantine, metformin and glyburide. Figure 6: Cumulative percentage of patients completing 24 weeks of double-blind treatment with specified changes from baseline in ADCS-ADL scores. Before you take memantine hydrochloride tablets, tell your doctor if you: Tell your doctor about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements. renal tubular acidosis or severe infections of the urinary tract). Lesions were seen after a single dose of Memantine. There were no clinically meaningful differences in most adverse events reported by patient groups 65 years old and < 65 years old. If you forget to take one dose of Memantine hydrochloride tablets, USP, do not double up on the next dose. The minimum recommended interval between dose increases is one week. There are no adequate data on the developmental risk associated with the use of Memantine hydrochloride in pregnant women. Memantine failed to demonstrate efficacy in two 12-week controlled clinical studies of 578 pediatric patients aged 6-12 years with autism spectrum disorders (ASD), including autism, Aspergers disorder and Pervasive Development Disorder - Not Otherwise Specified (PDD-NOS). Package insert / product label Generic name: memantine hydrochloride Dosage form: tablet Drug class: Miscellaneous central nervous system agents Medically reviewed by Drugs.com. , thrombocytopenia, thrombotic thrombocytopenic purpura in most adverse events reported by patient groups 65 years.... 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