Rx Only

100 Tablets

Hyophen ® tablets for oral administration

HYOSCYAMINE SULFATE. [620-61-1][3(S)-endo]-α-(Hydroxymethyl)-benzeneacetic acid 8-methyl-8-azabicyclo[3.2.1]oct-3-yl ester sulfate(2:1)(salt); 1αH,5αH-tropan-3α-ol(-)-tropate(ester) sulfate(2:1)(salt); 3α-tropanyl S-(-)-tropate; l-tropic acid ester with tropine; l-tropine tropate. C 34H 48N 2O 10S. Hyoscyamine Sulfate is an alkaloid of belladonna. Exists as a white crystalline powder. Its solutions are alkaline to litmus. Affected by light, it is slightly soluble in water; freely soluble in alcohol; sparingly soluble in ether.

METHENAMINE. [100-97-0] 1,3,5,7-Tetraazatricyclo [3.3.1.-1 3,7] decane; hexamethylenetetramine; HMT; HMTA; hexamine; 1,3,5,7-tetraazaadamantane hexamethylenemine; Uritone; Urotropin. C 6H 12N 4; mol wt 140.19; C 15.40%, H 8.63%, N 39.96%. Methenamine (hexamethylenetetramine) exists as colorless, lustrous crystals or white crystalline powder. Its solutions are alkaline to litmus. Freely soluble in water, soluble in alcohol and in chloroform.

METHYLENE BLUE. [61-73-4] 3,7-Bis(dimethylamino) phenothiazin-5-ium chloride; C.I. Basic Blue 9; methylthioninium chloride; tetramethylthionine chloride; 3,7-bis(dimethylamino) phenazathionium chloride. C 16H 13ClN 3S; mol wt 319.85, C 60.08%, H 5.67%, Cl 11.08%, N 13.14%, S 10.03%. Methylene Blue (Methylthionine chloride) exists as dark green crystals. It is soluble in water and in chloroform; sparingly soluble in alcohol.

PHENYL SALICYLATE. [118-55-8] 2-Hydroxybenzoic acid phenyl ester; Salol. C 13H 10O 3; mol wt 214.22, C 72.89%, H 4.71%, O 22.41%. Made by the action of phosphorus oxy-chloride on a mixture of phenol and salicylic acid. Phenyl Salicylate exists as white crystals with a melting point of 41°-43° C. It is very slightly soluble in water and freely soluble in alcohol.

BENZOIC ACID. [65-85-0] Benzenecarboxylic acid; Benzeneformic acid; Benzenemethanoic acid. C 7H 6O 2; mol wt 122.12, C 68.85%, H 4.95%, O 26.20%. Exists as white powder or crystals, scales or needles. It has a strong odor and is slightly soluble in alcohol; also soluble in volatile and fixed oils, slightly soluble in petroleum ether.

Hyophen ® tablets contain inactive ingredients: Crospovidone, FD&C Blue #2, Magnesium Stearate, Microcrystalline Cellulose, Polyethylene Glycol, Polyvinyl Alcohol, Rice Starch, Silicon Dioxide, Sodium Starch Glycolate, Stearic Acid, Talc, and Titanium Dioxide.

HYOSCYAMINE SULFATE is a parasympatholytic which relaxes smooth muscles and thus produces an antispasmodic effect. It is well absorbed from the gastrointestinal tract and is rapidly distributed throughout the body tissues. Most is excreted in the urine within 12 hours, 13% to 50% being unchanged. Its biotransformation is hepatic. Its protein binding is moderate.

METHENAMINE degrades in an acidic urine environment releasing formaldehyde which provides bactericidal or bacteriostatic action. It is well absorbed from the gastrointestinal tract. 70%-90% reaches the urine unchanged at which point it is hydrolyzed if the urine is acidic. Within 24 hours it is almost completely (90%) excreted; of this at a pH of 5, approximately 20% is formaldehyde. Protein binding - some formaldehyde is bound to substances in the urine and surrounding tissues. Methenamine is freely distributed to body tissue and fluids but is not clinically significant as it does not hydrolyze at pH greater than 6.8.

METHYLENE BLUE possesses weak antiseptic properties. It is well absorbed by the gastrointestinal tract and rapidly reduced to leukomethylene blue which is stabilized in some combination form in the urine. 75% is excreted unchanged.

PHENYL SALICYLATE releases salicylate, a mild analgesic for pain.

BENZOIC ACID helps maintain an acid pH in the urine necessary for the degradation of methenamine.

Hyophen ® tablets are indicated for the treatment of symptoms of irritative voiding. Indicated for the relief of local symptoms, such as inflammation, hypermotility, and pain, which accompany lower urinary tract infections. Indicated for the relief of urinary tract symptoms caused by diagnostic procedures.

Hypersensitivity to any of the ingredients is possible.

Risk benefits should be carefully considered when the following medical problems exist: cardiac disease (especially cardiac arrhythmias, congestive heart failure, coronary heart disease, and mitral stenosis); gastrointestinal tract obstructive disease; glaucoma; myasthenia gravis, acute urinary retention may be precipitated in obstructive uropathy (such as bladder neck obstruction due to prostatic hypertrophy).

Do not exceed recommended dosage. If rapid pulse, dizziness or blurring of vision occurs discontinue use immediately.

Cardiovascular: rapid heartbeat, flushing

Central Nervous System: blurred vision, dizziness, drowsiness

Genitourinary: difficult micturition, acute urinary retention

Gastrointestinal: dry mouth, nausea and vomiting

Respiratory: shortness of breath or trouble breathing

Serious allergic reactions to this drug are rare. Seek immediate medical attention if you notice symptoms of a serious allergic reaction, including itching, rash, severe dizziness, swelling or trouble breathing.

This medication can cause urine and sometimes stools to turn blue to blue-green. This effect is harmless and will subside after medication is stopped.

Call your doctor or physician for medical advice about side effects. To report SUSPECTED ADVERSE REACTIONS, contact BioComp Pharma at 1-866-762-2365 or FDA at 1-800-FDA-1088, www.fda.gov/medwatch.

A dependence on the use of Hyophen ® tablets has not been reported and due to the nature of its ingredients, abuse of Hyophen ® tablets is not expected.

Emesis or gastric lavage. Slow intravenous administration of physostigmine in doses of 1 to 4 mg (0.5 to 1 mg in children), repeated as needed in one to two hours to reverse severe antimuscarinic symptoms.

Administration of small doses of diazepam to control excitement and seizures. Artificial respiration with oxygen if needed for respiratory depression. Adequate hydration. Symptomatic treatment as necessary.

If overdose is suspected, contact your local poison center or emergency room immediately. US residents can contact the US National Poison Hotline at 1-800-222-1222.

Adults - one tablet orally 4 times per day followed by liberal fluid intake.

Older Children - Dosage must be individualized by physician. Not recommended for use in children six years of age or younger.

Hyophen ®tablets are blue tablets imprinted with "SAT" on one side and "901" on opposite side. NDC 44523-741-01, Bottle of 100 Tablets.

Rx Only

Hyophen® is a registered trademark licensed to BioComp Pharma, Inc.

Distributed by:







BIOCOMP PHARMA, INC.



San Antonio, Texas 78230

Manufactured for:

Rev. 1018

NDC 44523-741-01

Rx Only

Hyophen®

EACH TABLET CONTAINS



Methenamine 81.6 mg



Benzoic Acid 9.0 mg



Phenyl Salicylate 36.2 mg



Methylene Blue 10.8 mg



Hyoscyamine Sulfate 0.12 mg

100 Tablets

Hyophen ® is a registered trademark of BioComp Pharma, Inc.

Distributed by: BIOCOMP PHARMA, INC. San Antonio, Texas 78230