Folic Acid

Folic Acid

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Questions & Answers

Side Effects & Adverse Reactions

Excessive Hypotension: Although in most patients the hypotensive effect of nifedipine is modest and well tolerated, occasional patients have had excessive and poorly tolerated hypotension. These responses have usually occurred during initial titration or at the time of subsequent upward dosage adjustment, and may be more likely in patients using concomitant beta-blockers.

Severe hypotension and/or increased fluid volume requirements have been reported in patients who received immediate release capsules together with a beta-blocking agent and who underwent coronary artery bypass surgery using high dose fentanyl anesthesia. The interaction with high dose fentanyl appears to be due to the combination of nifedipine and a beta-blocker, but the possibility that it may occur with nifedipine alone, with low doses of fentanyl, in other surgical procedures, or with other narcotic analgesics cannot be ruled out. In nifedipine-treated patients where surgery using high dose fentanyl anesthesia is contemplated, the physician should be aware of these potential problems and, if the patient's condition permits, sufficient time (at least 36 hours) should be allowed for nifedipine to be washed out of the body prior to surgery.

Increased Angina and/or Myocardial Infarction: Rarely, patients, particularly those who have severe obstructive coronary artery disease, have developed well-documented increased frequency, duration and/or severity of angina or acute myocardial infarction upon starting nifedipine or at the time of dosage increase. The mechanism of this effect is not established.

Beta-Blocker Withdrawal: When discontinuing a beta-blocker it is important to taper its dose, if possible, rather than stopping abruptly before beginning nifedipine. Patients recently withdrawn from beta blockers may develop a withdrawal syndrome with increased angina, probably related to increased sensitivity to catecholamines. Initiation of nifedipine treatment will not prevent this occurrence and on occasion has been reported to increase it.

Congestive Heart Failure: Rarely, patients (usually while receiving a beta-blocker) have developed heart failure after beginning nifedipine. Patients with tight aortic stenosis may be at greater risk for such an event, as the unloading effect of nifedipine would be expected to be of less benefit to these patients, owing to their fixed impedance to flow across the aortic valve.

Legal Issues

There is currently no legal information available for this drug.

FDA Safety Alerts

There are currently no FDA safety alerts available for this drug.

Manufacturer Warnings

There is currently no manufacturer warning information available for this drug.

FDA Labeling Changes

There are currently no FDA labeling changes available for this drug.

Uses

Nifedipine extended-release tablets is indicated for the treatment of hypertension. It may be used alone or in combination with other antihypertensive agents.

History

There is currently no drug history available for this drug.

Other Information

Nifedipine extended-release tablets are an extended release tablet dosage form of the calcium channel blocker nifedipine. Nifedipine is 3,5-pyridinedicarboxylic acid, 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-dimethyl ester, C17H18N2O6, and has the structural formula:

structural formula

Nifedipine is a yellow crystalline substance, practically insoluble in water but soluble in ethanol. It has a molecular weight of 346.3. Nifedipine extended-release tablets contain either 30 or 60 mg of nifedipine for once-a-day oral administration.

Inert ingredients in the formulation are: colloidial silicon dioxide, hypromellose, lactose monohydrate, magnesium stearate. The inert ingredients in the film coating are: hypromellose, polydextrose, polyethylene glycol, triacetin, yellow iron oxide, and titanium dioxide.

Dissolution test is pending.

Folic Acid Manufacturers


  • Mckesson Packaging Services Business Unit Of Mckesson Corporation.
    Folic Acid Tablet [Mckesson Packaging Services Business Unit Of Mckesson Corporation.]
  • Cardinal Health
    Folic Acid Tablet [Cardinal Health]
  • State Of Florida Doh Central Pharmacy
    Folic Acid Tablet [State Of Florida Doh Central Pharmacy]
  • Cardinal Health
    Folic Acid Tablet [Cardinal Health]
  • West-ward Pharmaceutical Corp.
    Folic Acid (Folic Acid) Tablet [West-ward Pharmaceutical Corp.]
  • Cadista Pharmaceuticals Inc.
    Folic Acid (Folic Acid) Tablet [Cadista Pharmaceuticals Inc.]
  • Qualitest
    Folic Acid Tablet [Qualitest]
  • Apace Packaging
    Folic Acid Tablet [Apace Packaging]
  • Contract Pharmacy Services-pa
    Folic Acid Tablet [Contract Pharmacy Services-pa]
  • Physicians Total Care, Inc.
    Folic Acid Tablet [Physicians Total Care, Inc.]
  • State Of Florida Doh Central Pharmacy
    Folic Acid Tablet [State Of Florida Doh Central Pharmacy]
  • Mckesson Packaging Services Business Unit Of Mckesson Corporation.
    Folic Acid Tablet [Mckesson Packaging Services Business Unit Of Mckesson Corporation.]
  • Major Pharmaceuticals
    Folic Acid Tablet [Major Pharmaceuticals]
  • Contract Pharmacy Services-pa
    Folic Acid Tablet [Contract Pharmacy Services-pa]
  • Qualitest Pharmaceuticals
    Folic Acid Tablet [Qualitest Pharmaceuticals]
  • Remedyrepack Inc.
    Folic Acid Tablet [Remedyrepack Inc. ]
  • Remedyrepack Inc.
    Folic Acid Tablet [Remedyrepack Inc. ]
  • App Pharmaceuticals, Llc
    Folic Acid Injection, Solution [App Pharmaceuticals, Llc]
  • Exelan Pharmaceuticals, Inc.
    Folic Acid Tablet [Exelan Pharmaceuticals, Inc.]
  • West-ward Pharmaceutical Corp
    Folic Acid Tablet [West-ward Pharmaceutical Corp]
  • Mckesson Contract Packaging
    Folic Acid Tablet [Mckesson Contract Packaging]
  • Excellium Pharmaceutical Inc.
    Folic Acid Tablet [Excellium Pharmaceutical Inc.]
  • Pd-rx Pharmaceuticals, Inc.
    Folic Acid Tablet [Pd-rx Pharmaceuticals, Inc.]
  • Bryant Ranch Prepack
    Folic Acid Tablet [Bryant Ranch Prepack]
  • Remedyrepack Inc.
    Folic Acid Tablet [Remedyrepack Inc. ]
  • Remedyrepack Inc.
    Folic Acid Tablet [Remedyrepack Inc. ]
  • Remedyrepack Inc.
    Folic Acid Tablet [Remedyrepack Inc. ]
  • St Marys Medical Park Pharmacy
    Folic Acid Tablet [St Marys Medical Park Pharmacy]
  • Remedyrepack Inc.
    Folic Acid Tablet [Remedyrepack Inc. ]
  • Unit Dose Services
    Folic Acid Tablet [Unit Dose Services]
  • American Health Packaging
    Folic Acid Tablet [American Health Packaging]
  • A-s Medication Solutions Llc
    Folic Acid Tablet [A-s Medication Solutions Llc]
  • Amneal Pharmaceuticals, Llc
    Folic Acid Tablet [Amneal Pharmaceuticals, Llc]
  • Bicon Pharmaceutical Inc.
    Folic Acid Tablet [Bicon Pharmaceutical Inc.]
  • Aphena Pharma Solutions – Tennessee, Llc
    Folic Acid Tablet [Aphena Pharma Solutions – Tennessee, Llc]
  • Remedyrepack Inc.
    Folic Acid Tablet [Remedyrepack Inc. ]
  • Aidarex Pharmaceuticals Llc
    Folic Acid Tablet [Aidarex Pharmaceuticals Llc]
  • Cadila Pharmaceuticals Limited
    Folic Acid Tablet [Cadila Pharmaceuticals Limited]
  • Mckesson Packaging Services A Business Unit Of Mckesson Corporation
    Folic Acid Tablet [Mckesson Packaging Services A Business Unit Of Mckesson Corporation]
  • Preferred Pharmaceuticals, Inc.
    Folic Acid Tablet [Preferred Pharmaceuticals, Inc.]
  • Aphena Pharma Solutions – Tennessee, Llc
    Folic Acid Tablet [Aphena Pharma Solutions – Tennessee, Llc]
  • Mylan Institutional Inc.
    Folic Acid Tablet [Mylan Institutional Inc.]
  • Preferred Pharmaceuticals, Inc.
    Folic Acid Tablet [Preferred Pharmaceuticals, Inc.]
  • Cardinal Health
    Folic Acid Tablet [Cardinal Health]
  • Cardinal Health
    Folic Acid Tablet [Cardinal Health]
  • Clinical Solutions Wholesale
    Folic Acid Tablet [Clinical Solutions Wholesale]
  • Ncs Healthcare Of Ky, Inc Dba Vangard Labs
    Folic Acid Tablet [Ncs Healthcare Of Ky, Inc Dba Vangard Labs]
  • Blu Pharmaceuticals, Llc
    Folic Acid Tablet [Blu Pharmaceuticals, Llc]
  • Avpak
    Folic Acid (Folic Acid) Tablet [Avpak]
  • Safecor Health, Llc
    Folic Acid Tablet [Safecor Health, Llc]
  • Clinical Solutions Wholesale, Llc
    Folic Acid Tablet [Clinical Solutions Wholesale, Llc]
  • Sunrise Pharmaceutical, Inc.
    Folic Acid Tablet [Sunrise Pharmaceutical, Inc.]

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