A1,
A2,
B,
C1,
C2,
D,
E,
F,
G-H,
I-K,
L,
M,
N,
O,
P1,
P2,
Q-R,
S,
T,
U-V,
W-Z
Theodur Online, Description, Chemistry, Ingredients - Theophylline
Theodur Online, Description, Chemistry, Ingredients - Theophylline
DESCRIPTION
Theophylline is structurally classified as a methylxanthine. It
occurs as a white, odorless, crystalline
powder with a bitter
taste. Anhydrous theophylline has the chemical
name 1H-Purine-2,6-dione,3,7-dihydro-1,3-dimethyl-.
The molecular formula
of anhydrous theophylline
is C7H8N4O2 with a molecular
weight of 180.17. (For
products containing theophylline monohydrate, substitute
the following: The molecular formula
of theophylline monohydrate is C7H8N4O2H2O
with a molecular weight
of 198.18.)
The molecular formula
of oxtriphylline
is C12H21N5O3 with a
molecular weight of 283.33.
Immediate-Release Oral Forms
Slo-Phyllin tablets (theophylline tablets, USP) are scored, dye-free
tablets providing 100 mg
or 200 mg of theophylline,
anhydrous, USP.
Slo-Phyllin 80 mg Syrup
(theophylline, anhydrous) is a nonalcoholic, sugar-free solution
containing per 15 ml
theophylline, anhydrous,
USP 80 mg with sodium
benzoate, NF, 18 mg and methylparaben,
NF 3 mg
added as preservatives.
Both tablets and syrup
are intended for oral administration.
Theophylline is a bronchodilator
structurally classified as a xanthine
derivative.
Syrup inactive ingredients are citric acid,
flavors, glycerine, methylparaben, propylene glycol, saccharin
sodium, sodium
benzoate, sorbitol, purified water.
Tablets: 100 mg inactive
ingredients are lactose, magnesium
stearate, microcrystalline cellulose,
sodium starch
glycolate; 200 mg inactive
ingredients are magnesium
stearate, microcrystalline
cellulose, sodium
starch glycolate.
Sustained Action Capsules
Theo-Dur Sprinkle sustained action
capsules contain 50 mg, 75 mg, 125 mg, or 200 mg
anhydrous theophylline,
a bronchodilator
structurally classified as a xanthine
derivative. The inactive ingredients for Theo-Dur Sprinkle are:
ethylcellulose, hydroxypropylcellulose, povidone, and sucrose. Theo-Dur
Sprinkle takes the form
of long-acting microencapsulated beads within a hard gelatin
capsule for oral
administration.
The theophylline
has been microencapsulated in a proprietary coating of polymers
to mask the bitter
taste associated with
the drug while providing
a prolonged effect. The entire
contents of a Theo-Dur Sprinkle capsule are intended to be sprinkled
on a small amount of soft
food immediately prior
to ingestion, or it
may be swallowed whole. SUBDIVIDING THE CONTENTS OF A CAPSULE IS
NOT RECOMMENDED. Each capsule
is oversized to allow ease of opening.
Anhydrous theophylline
is a white, odorless, crystalline
powder having a bitter
taste.
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