This green, round pill imprinted with WATSON 424 is a Hydrochlorothiazide 25 MG / Triamterene 37.5 MG Oral Tablet, per the NIH.
Triamterene and Hydrochlorothiazide is a human prescription drug. The active pharmaceutical ingredient is hydrochlorothiazide; triamterene and is classified as, "Decreased Renal K+ Excretion [PE], Increased Diuresis [PE], Potassium-sparing Diuretic [EPC], Increased Diuresis [PE], Thiazide Diuretic [EPC], Thiazides [Chemical/Ingredient]."
This pill is made by a total of 6 firms: (1) Watson Laboratories, Inc., (2) Preferred Pharmaceuticals, Inc, (3) PD-Rx Pharmaceuticals, Inc., (4) REMEDYREPACK INC. , (5) St Marys Medical Park Pharmacy, and (6) STAT Rx USA LLC
There is 1 other green pill that with a similar imprint: "WATSON 424". They may be a different dosage of the same drug or a different drug entirely.