Comparing Fosfomycin vs Methenamine

View side-by-side comparisons of medication uses, ratings, cost, side effects and interactions.
Fosfomycin	Methenamine	Enter another drug to compare

Fosfomycin

Methenamine

Prescription only

Prescribed for Urinary Tract Infection, Bladder Infection, Transurethral Prostatectomy. Fosfomycin may also be used for purposes not listed in this medication guide.

Prescription and OTC

Prescribed for Prevention of Bladder infection, Urinary Tract Infection, Kidney Infections, Bladder Infection. Methenamine may also be used for purposes not listed in this medication guide.

More about Fosfomycin

More about Methenamine

Ratings & Reviews

Fosfomycin has an average rating of 5.4 out of 10 from a total of 78 ratings on Drugs.com. 44% of reviewers reported a positive effect, while 46% reported a negative effect.

Methenamine has an average rating of 8.2 out of 10 from a total of 105 ratings on Drugs.com. 76% of reviewers reported a positive effect, while 13% reported a negative effect.

View all 78 reviews

View all 105 reviews

Side Effects Experienced by Users Side effects are reported in Drugs.com user reviews and not clinically verified.

Diarrhea (23.1%)
Nausea (15.4%)
Upset stomach (10.3%)
Back pain (9.0%)
Bloating (6.4%)
Stomach pain (6.4%)
Abdominal pain (5.1%)

View all Fosfomycin side effects

Bad taste (5.7%)
Burning (3.8%)
Difficulty urinating (3.8%)
Bladder issues (2.9%)
Depression (2.9%)
Diarrhea (2.9%)
Headaches (2.9%)

View all Methenamine side effects

Drug Class

Urinary anti-infectives

Generic Availability

N/A

Lower cost generic

Pricing and Coupons * Prices are without insurance

We could not find an exact match for this medicine. Try searching the Price Guide directly.

Quantity	30 each
Strength	hippurate 1 g
Per unit^*	$0.96
Cost^*	$28.82

View all Methenamine prices

Get free Discount Card

Dosage Forms

N/A

Oral tablet

Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value.

5.7 hours

6 hours

CSA Schedule ¹ View glossary of CSA terms

Not a controlled drug

Is not subject to the Controlled Substances Act.

Not a controlled drug

Is not subject to the Controlled Substances Act.

Pregnancy Category

Category B No proven risk in humans

See the full pregnancy warnings document.

Category C Risk cannot be ruled out

See the full pregnancy warnings document.

Drug Interactions

A total of 27 drugs are known to interact with Fosfomycin:

4 major drug interactions (10 brand and generic names)
22 moderate drug interactions (69 brand and generic names)
1 minor drug interactions (5 brand and generic names)

A total of 65 drugs are known to interact with Methenamine:

9 major drug interactions (22 brand and generic names)
56 moderate drug interactions (264 brand and generic names)

Alcohol/Food/Lifestyle Interactions

No known alcohol/food interactions. This does not necessarily mean no interactions exist. Always consult your healthcare provider.

Disease Interactions

First Approval Date

N/A

July 05, 1967

WADA Class View classifications

N/A

More Information

Patient Resources

Professional Resources

¹ The Controlled Substances Act (CSA) schedule information displayed applies to substances regulated under federal law. There may be variations in CSA schedules between individual states.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer

Comparing Fosfomycin vs Methenamine

See also:

Augmentin

Bactrim

Ozempic

Macrobid

Sulfamethoxazole/trimethoprim

Amoxicillin/clavulanate

Nitrofurantoin

Levofloxacin

Ceftriaxone

Ciprofloxacin

Further information

Comparing Fosfomycin vs Methenamine

See also:

Further information

Compare Drugs