Best treatments for giardiasis
12 products may treat giardiasis, spanning FDA drug classes such as anthelmintic, nitroimidazole antimicrobial, antiprotozoal. The current highest-rated option is albendazole. Ranked below by our independent recall-safety rating (rated where FDA data exists) — not medical advice; always consult a professional.
Quick answer: Of the 12 drugs we list for giardiasis, all are available as lower-cost generics, spanning classes such as anthelmintic, nitroimidazole antimicrobial, antiprotozoal. They’re ranked by each drug’s FDA recall-safety record — not clinical effectiveness for giardiasis — so confirm the right choice with your prescriber.
Top-rated picks for giardiasis: 1. Albendazole · 2. Vandazole · 3. Alinia
| # | Drug | Rating | Type | Form | Class | Generic? | Pharmacy pays | |
|---|---|---|---|---|---|---|---|---|
| 1 | 72/100 | Prescription | Tablet | Anthelmintic | Generic | $131 | View → | |
| 2 | 56/100 | Prescription | Topical | Nitroimidazole Antimicrobial | Generic | $0 | View → | |
| 3 | Not yet rated | Prescription | Tablet | Antiprotozoal | Generic | $2639 | View → | |
| 4 | Not yet rated | Prescription | Injectable | Nitroimidazole Antimicrobial | Generic | $0 | View → | |
| 5 | Not yet rated | Prescription | Suspension | Nitroimidazole Antimicrobial | Generic | $0 | View → | |
| 6 | Not yet rated | Prescription | Topical | Nitroimidazole Antimicrobial | Generic | $0 | View → | |
| 7 | Not yet rated | Prescription | Topical | Nitroimidazole Antimicrobial | Generic | $0 | View → | |
| 8 | Not yet rated | Prescription | Topical | Nitroimidazole Antimicrobial | Generic | $0 | View → | |
| 9 | Not yet rated | Prescription | Topical | Nitroimidazole Antimicrobial | Generic | $0 | View → | |
| 10 | Not yet rated | Prescription | Topical | Nitroimidazole Antimicrobial | Generic | $0 | View → |
Narrow by drug class
Explore the class hubs: nitroimidazole antimicrobial
Full ranking · 12 treatments
albendazole
PrescriptionFDA-sourced
Albendazole is an anthelmintic used to treat Ancylostomiasis, Clonorchiasis, Echinococcosis, Giardiasis.
Pharmacy pays
~$131.25 /30
vandazole
PrescriptionFDA-sourced
Vandazole (Metronidazole) is a nitroimidazole antimicrobial used to treat Abscess, Amebiasis, Bacteroides Infections, Bacterial Endocarditis.
Pharmacy pays
From ~$0.08· 5 formsalinia
PrescriptionFDA-sourced
Alinia (Nitazoxanide) is an antiprotozoal used to treat Cryptosporidiosis, Diarrhea, Giardiasis.
Pharmacy pays
~$2638.68 /30
flagyl i.v. rtu in plastic container
Boxed warningPrescriptionFDA-sourced
Flagyl I.V. Rtu in Plastic Container (Metronidazole) is a nitroimidazole antimicrobial used to treat Abscess, Amebiasis, Bacteroides Infections, Bacterial Endocarditis.
Pharmacy pays
From ~$0.08· 5 formslikmez
Boxed warningPrescriptionFDA-sourced
Likmez (Metronidazole) is a nitroimidazole antimicrobial used to treat Abscess, Amebiasis, Bacteroides Infections, Bacterial Endocarditis.
Pharmacy pays
From ~$0.08· 5 formsmetrocream
PrescriptionFDA-sourced
Metrocream (Metronidazole) is a nitroimidazole antimicrobial used to treat Abscess, Amebiasis, Bacteroides Infections, Bacterial Endocarditis.
Pharmacy pays
From ~$0.08· 5 formsFrequently asked
- What treats giardiasis?
- Our catalog lists 12 products that may treat giardiasis, based on NIH RxClass (MED-RT “may treat”) drug-classification data — not the verbatim FDA label. They're rated where FDA recall-safety data exists; the current top-rated option is albendazole.
- What is the best-rated treatment for giardiasis?
- By our independent recall-safety rating — not an efficacy measure — albendazole ranks highest among the products we list for giardiasis. Always consult a professional.
- How are these treatments ranked?
- By our independent score, currently based on FDA regulatory recall-safety data (the methodology blends additional sources as they come online). See the How we rate page.
- What types of drugs treat giardiasis?
- Treatments for giardiasis span FDA drug classes including anthelmintic, nitroimidazole antimicrobial, antiprotozoal. Compare every option side by side, ranked by independent rating, above.
Treatment associations are derived from NIH RxClass (MED-RT “may treat”) drug-classification data — not the verbatim FDA label. This is general reference, not medical advice — always consult a licensed professional.