Diurex
Caffeine · Tablet, Film Coated · Oral
Active ingredient
Active ingredient (in each pill) Caffeine Anhydrous, 100 mg
Purpose
Purpose Diuretic
Uses
Uses For the relief of temporary: water retention bloating swelling full feeling fatigue associated with the premenstrual and menstrual periods.
Warnings
Warnings
Ask a doctor before use
Ask a doctor before use if taking any other medications under 18 years of age. Do not give to children under 12 years of age.
When using this product
When using this product, limit the use of caffeine-containing medications, foods or beverages because too much caffeine may cause: nervousness irritability sleeplessness occasional rapid heart beat. The recommended dose of this product contains about as much caffeine as two cups of coffee.
Stop use and ask a doctor
Stop use and ask a doctor if symptoms last for more than ten consecutive days.
Pregnancy or breast-feeding
If pregnant or breastfeeding, ask a health professional before use.
Keep out of reach of children
Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.
Directions
Directions Read all package directions and warnings before use. Use only as directed. Adults: Two (2) pills (200 mg maximum strength) every 3 to 4 hours while symptoms persist, not to exceed 8 pills in a 24 hour period. Drink 6 to 8 glasses of water daily. Recommended for use by normally healthy adults only.
Inactive ingredients
Inactive ingredients Acacia, calcium carbonate, croscarmellose sodium, D&C Yellow No. 10 Lake, ethyl vanillin, FD&C Blue No. 1 Lake, FD&C Blue No. 2 Lake, hypromellose, lactose, magnesium silicate, magnesium stearate, maltodextrin, microcrystalline cellulose, polyethylene glycol, polysorbate 80, stearic acid, titanium dioxide.
Questions?
Questions? 1-800-792-2582
Label text from the FDA structured product label by Kobayashi Healthcare International, Inc. (revised Jun 8, 2026). Long sections are shortened; the complete label is on DailyMed.
Active ingredients
- Caffeine in 3 products
- Pamabrom in 1 product
- Magnesium Salicylate in 1 product
Diurex NDC products (4)
| NDC | Strength & form | Labeler | Type |
|---|---|---|---|
| 52389-155 | Caffeine 100 mg/1 Tablet, Film Coated | Kobayashi Healthcare International, Inc. | OTC MONOGRAPH DRUG |
| 52389-249 | Pamabrom 50 mg/1 Tablet, Film Coated | Kobayashi Healthcare International, Inc. | OTC MONOGRAPH DRUG |
| 52389-306 | Magnesium Salicylate 162.5 mg/1; Caffeine 50 mg/1 Tablet, Coated | Kobayashi Healthcare International, Inc. | OTC MONOGRAPH DRUG |
| 52389-656 | Caffeine 100 mg/1 Tablet, Film Coated | Kobayashi Healthcare International, Inc. | OTC MONOGRAPH DRUG |
Frequently asked questions
What is Diurex used for?
Uses For the relief of temporary: water retention bloating swelling full feeling fatigue associated with the premenstrual and menstrual periods.
Who makes Diurex?
Diurex is listed by 1 labeler in the FDA NDC directory, including Kobayashi Healthcare International, Inc..