Alkacip Dosing Recommendations
For adults, Alkacip (disodium hydrogen citrate/phosphorous supplement) should be dosed at one tablet four to eight times daily with a full glass of water, with food, and at bedtime; for children over 4 years, one tablet four times daily; and for children under 4 years, dosing must be determined by a physician. 1
Adult Dosing
- Standard dose: 1 tablet administered 4-8 times daily
- Administration requirements:
- Take with a full glass of water
- Take with food
- Include a dose at bedtime
- Each tablet provides 20% of the U.S. RDA of phosphorus 1
Pediatric Dosing
Children Over 4 Years
- Dose: 1 tablet four times daily
- Same administration requirements as adults (with water, food, and at bedtime) 1
Children Under 4 Years
- Requires physician supervision - no standardized dosing available
- Must be prescribed and monitored by a licensed physician 1
Important Clinical Considerations
Contraindications 1:
- Infected phosphate stones in the urinary tract
- Severely impaired renal function (<30% of normal)
- Hyperphosphatemia
Mechanistic Context
The evening/bedtime dosing is particularly important for urinary alkalinization. Research demonstrates that a single evening dose of alkaline citrate produces sustained urinary pH elevation lasting until 10 a.m. the next day, reducing calcium oxalate crystallization risk during overnight hours 2. This circadian approach aligns with the natural rhythm of urine pH, which peaks at approximately 10:00,16:00, and 22:00 under physiological conditions 3.
The bedtime dose specifically targets the overnight period when urine is most concentrated and stone formation risk is highest, making this timing critical for therapeutic efficacy rather than arbitrary 2.