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You are here: Home » eGM Resources » Health Information & Resources Portal|Home » RX Drug List (listed alphabetically) » Drug Reference (T's) » Timolol Maleate



DESCRIPTION

Timolol maleate is a non-selective beta-adrenergic receptor blocking agent. The chemical name for timolol maleate tablets is (S)-1-[(1,1-dimethylethyl)amino]-3-[[4-(4-morpholinyl)- 1,2,5-thiadiazol -3 -yl]oxy]-2-propanol, (Z)-2-butenedioate (1:1) salt. The chemical name for timolol maleate ophthalmic solutions and ophthalmic gel forming solution is (-)-1-(tert-butylamino)-3-[(4-morpholino-1,2,5-thiadiazol-3-yl)oxy]-2-propanol maleate (1:1) (salt). Timolol maleate possesses an asymmetric carbon atom in its structure and is provided as the levo-isomer. Its empirical formula is C13H24N4O3SC4H4O4. Timolol maleate has a molecular weight of 432.50. It is a white, odorless, crystalline powder which is soluble in water, methanol, and alcohol.

Tablets: Blocadren is supplied as tablets in three strengths containing 5 mg, 10 mg or 20 mg timolol maleate for oral administration. Inactive ingredients are cellulose, FD&C blue 2, magnesium stearate, and starch.

Ophthalmic Solution: Timoptic is stable at room temperature. Timoptic ophthalmic solution is supplied as a sterile, isotonic, buffered, aqueous solution of timolol maleate in two dosage strengths: each ml of Timoptic 0.25% contains 2.5 mg of timolol (3.4 mg of timolol maleate). Each ml of Timoptic 0.5% contains 5.0 mg of timolol (6.8 mg of timolol maleate). Inactive Ingredients: Monobasic and dibasic sodium phosphate, sodium hydroxide to adjust pH, and water for injection. Benzalkonium chloride 0.01% is added as preservative.

Preservative-Free Ophthalmic Solution: Timolol maleate is stable at room temperature. Preservative-free ophthalmic solution Timoptic is supplied in Ocudose, a unit dose container, as a sterile, isotonic, buffered, aqueous solution of timolol maleate in two dosage strengths: Each ml of preservative-free Timoptic in Ocudose 0.25% contains 2.5 mg of timolol (3.4 of timolol maleate). Each ml of preservative-free Timoptic in Ocudose 0.5% contains 5.0 mg of timolol (6.8 mg of timolol maleate). Inactive Ingredients: Monobasic and dibasic sodium phosphate, sodium hydroxide to adjust pH, and water for injection.

Ophthalmic Gel Forming Solution: Timoptic-XE sterile ophthalmic gel forming solution is supplied as a sterile, isotonic, buffered, aqueous solution of timolol maleate in two dosage strengths. Each ml of Timoptic-XE 0.25% contains 2.5 mg of timolol (3.4 mg of timolol maleate). Each ml of Timoptic-XE 0.5% contains 5.0 mg of timolol (6.8 mg of timolol maleate). Inactive Ingredients: Gelrite gellan gum, tromethamine, mannitol, and water for injection. Preservative: Benzododecinium bromide 0.012%.

Gelrite is a purified anionic heteropolysaccharide derived from gellan gum. An aqueous solution of Gelrite, in the presence of a cation, has the ability to gel. Upon contact with the precorneal tear film, Timoptic-XE forms a gel that is subsequently removed by the wflow of tears.

CATEGORIES, BRAND NAMES

CATEGORIES: Glaucoma, aphakic; Glaucoma, open-angle; Glaucoma, secondary; Headache, migraine; Hypertension, essential; Hypertension, ocular; Infarction, myocardial, adjunct; Pregnancy Category C; FDA Approved 1978 Aug; Top 200 Drugs

FDA Drug Classes: Antihypertensives; Antimigraine; Beta Blockers; Glaucoma

BRAND NAMES:

BRAND NAMES: Apo-Timol; Apo-Timolol; Aquanil; Betim; Blocadren; Blocanol; Cardina; Cusimolol; Dispatim; Equiton; Glauco-Opu; Glucolol; Glucomol; Hypermol; Lolomit; Novo-Timol; Nyolol; Ocupres; Optimol; Proflax; Temserin; Tilmat; Tiloptic; Timacar; Timacor; Timoptic; Timoptic-Xe; Timoptol; Timpotic
(Foreign Brand names outside U.S. in italics)

FOREIGN BRAND AVAILABILITY:
Apo-Timol (Canada)
Apo-Timolol (New-Zealand)
Betim (Denmark; England; Greece; Ireland; Norway)
Blocanol (Finland)
Cardina (Finland)
Hypermol (New-Zealand)
Lolomit (Taiwan)
Novo-Timol (Canada)
Proflax (Argentina)
Temserin (Germany)
Tilmat (New-Zealand)
Timacar (Denmark)
Timacor (France)

COST OF THERAPY: 187.46 (Hypertension; Tablet; 10 mg; 2/day; 365 days)





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