"By Matt McMillen
WebMD Health News
Reviewed by Brunilda Nazario, MD
April 9, 2015 -- Spring is finally here, and with it comes tree pollen. For people with allergies, that could spell misery. But despite the hars"...
(cyprohepdaine hydrochloride) Tablets USP
Cyprohepdaine HCl, is an antihistaminic and antiserotonergic agent. Cyproheptadine hydrochloride is a white to slightly yellowish crystalline solid, with a molecular weight of 350.89, which is soluble in water, freely soluble in methanol, sparingly soluble in ethanol, soluble in chloroform, and practically insoluble in ether. It is the sesquihydrate of 4-(5H-dibenzo[a,d]cyclohepten-5-ylidene)-1- methylpiperidine hydrochloride. The molecular formula of the anhydrous salt is C21H21N•HCl and the structural formula of the anhydrous salt is:
Cyproheptadine hydrochloride is available for oral administration in 4 mg tablets. Inactive ingredients include: lactose monohydrate, magnesium stearate, microcrystalline cellulose, and sodium starch glycolate.
What are the possible side effects of cyproheptadine (Periactin)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop taking cyproheptadine and call your doctor at once if you have a serious side effect such as:
- confusion, hallucinations, unusual thoughts or behavior;
- seizure (convulsions);
- ringing in your ears;
- feeling like you might pass out;
- fast or pounding heartbeats;
- easy bruising or bleeding;
- urinating less than usual or not at all; or
- pale or yellowed...
What are the precautions when taking cyproheptadine hydrochloride (Cyproheptadine)?
Before taking cyproheptadine, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: breathing problems (such as asthma, emphysema), high pressure in the eye (glaucoma), heart disease, high blood pressure, kidney disease, seizures, stomach/intestine problems (such as ulcers, blockage), overactive thyroid (hyperthyroidism), difficulty urinating (for example, due to enlarged prostate).
This drug may make you dizzy or drowsy or cause blurred vision. Do not drive, use machinery, or do any activity that...
Last reviewed on RxList: 10/10/2016
This monograph has been modified to include the generic and brand name in many instances.
Additional Cyproheptadine Information
Cyproheptadine - User Reviews
Cyproheptadine User Reviews
Now you can gain knowledge and insight about a drug treatment with Patient Discussions.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Allergies & Asthma
Improve treatments & prevent attacks.