Biohist Information

Relieving symptoms of sinus congestion, sinus pressure, runny nose, and sneezing due to colds, upper respiratory infections, and allergies. It may also be used for other conditions as determined by your doctor.

Biohist LA Sustained-Release Tablets are an antihistamine and decongestant combination. The antihistamine works by blocking the action of histamine, which helps reduce symptoms such as watery eyes and sneezing. The decongestant promotes sinus and nasal drainage, relieving congestion and pressure.

Do NOT use Biohist LA Sustained-Release Tablets if:

you are allergic to any ingredient in Biohist LA Sustained-Release Tablets
you have severe high blood pressure, severe heart blood vessel disease, rapid heartbeat, or severe heart problems
you take sodium oxybate (GHB) or if you have taken furazolidone or a monoamine oxidase inhibitor (MAOI) (eg, phenelzine) within the last 14 days
Contact your doctor or health care provider right away if any of these apply to you.

Before using Biohist LA Sustained-Release Tablets:

Some medical conditions may interact with Biohist LA Sustained-Release Tablets. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

if you are pregnant, planning to become pregnant, or are breast-feeding
if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
if you have allergies to medicines, foods, or other substances
if you have a fast, slow, or irregular heartbeat
if you have a history of asthma, lung problems (eg, emphysema), adrenal gland problems (eg, adrenal gland tumor), heart problems, high blood pressure, diabetes, heart blood vessel problems, stroke, glaucoma, a blockage of your stomach or intestines, ulcers, a blockage of your bladder, trouble urinating, an enlarged prostate, seizures, or an overactive thyroid
Some MEDICINES MAY INTERACT with Biohist LA Sustained-Release Tablets. Tell your health care provider if you are taking any other medicines, especially any of the following:

Beta-blockers (eg, propranolol), catechol-O-methyltransferase (COMT) inhibitors (eg, tolcapone), furazolidone, indomethacin, MAOIs (eg, phenelzine), sodium oxybate (GHB), or tricyclic antidepressants (eg, amitriptyline) because they may increase the risk of Biohist LA Sustained-Release Tablets's side effects
Digoxin or droxidopa because the risk of irregular heartbeat or heart attack may be increased
Bromocriptine or hydantoins (eg, phenytoin) because the risk of their side effects may be increased by Biohist LA Sustained-Release Tablets
Guanethidine, guanadrel, mecamylamine, methyldopa, or reserpine because their effectiveness may be decreased by Biohist LA Sustained-Release Tablets
This may not be a complete list of all interactions that may occur. Ask your health care provider if Biohist LA Sustained-Release Tablets may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.