Methenamine and Headaches: What Users Say

• Mag...
• Taken for less than 1 month
• September 28, 2019

Methenamine for Prevention of Bladder infection "I have been on Hiprex for 3 weeks. I had a bladder infection, and after taking the antibiotic, the doctor has put me on Hiprex. I find I am tired all the time on this drug. Mild headache. It is working for the bladder."

• Rac...
• Taken for 6 months to 1 year
• December 10, 2021

For Prevention of Bladder infection "I've been getting UTIs for over 20 years, ever since giving birth to my children. I've been on Bactrim for a year (until it stopped working), Keflex for a year (until that stopped working), and also Amoxicillin for a year (until that stopped working). At this point, I realized I was steadily developing resistance to too many antibiotics, and this isn't a good long-term plan. But without antibiotics, I was getting 2-3 UTIs a month. Finally, I discovered Hiprex (Methenamine Hippurate) and asked my urologist about it. He was fine with prescribing it for me. At first, it gave me headaches, but then I discovered that sometimes people experience headaches when they ingest both Hiprex AND caffeine. It has to do with increased vasodilation. So anyway, I gave up the caffeine and the headaches went away. I now take 1 Hiprex 1000mg tablet twice a day with 500mg ascorbic acid (vit C). Going on 1 whole year with no UTIs! Awesome! Be careful to keep urine pH below 6.5 and invest in urine pH test strips."

• Lac...
• Taken for less than 1 month
• February 7, 2022

For Urinary Tract Infection "Had a drug-resistant UTI and spent almost a year on 8 different antibiotic courses. Nothing has kept away the UTI until I started this Hiprex 1 mg 2x a day with 1000 Vit C. My side effects are intense, often disturbing dreams and a constant headache. It’s been 30 days, and I’m debating about weaning off because of the headaches but terrified of the UTI returning. Anyone else with headaches and bad dreams?"