Our Pick: AZO
Check price on Amazon →AZO vs pH-D Boric Acid: The Two Printed-600 mg Majors, Side by Side
AZO 30 count at $19.49 (about $0.65 each) against pH-D 36 count at $26.97 (about $0.75 each): same printed 600 mg, same warnings, a pharmacy brand against the boric acid specialist. AZO wins on price per piece at these two boxes; pH-D wins on owner consistency and its 72 count. Boric acid is not FDA-approved to treat any condition; every box warning is stated first. Prices verified via the Amazon Creators API on September 5, 2026.
By The Women's Health Desk2026-09-05~10 min read Ranked on verified label facts, never box claimsHow we research
Best ValueNutraBlast Boric Life Boric Acid Suppositories for Women, 600 mg, 30 Count
NutraBlast · 4.2
$9.96
Upgrade PickpH-D Feminine Health Boric Acid Suppositories for Women, 600 mg, 36 Count
pH-D Feminine Health · 4.7
$26.97
Before the verdict, the box. Boric acid vaginal suppositories are not FDA-approved to treat any condition. They do not treat, cure or prevent bacterial vaginosis or yeast infections, and neither AZO's label nor pH-D's says they do; both describe the product for vaginal odor and pH balance. Every box carries the same block of warnings: for vaginal use only; never take by mouth, boric acid is poisonous if swallowed; keep out of reach of children; do not use if pregnant or nursing; do not use on broken or irritated skin; see a clinician for a diagnosis before self-treating symptoms; and stop and see a clinician if symptoms persist or get worse.
With that said, the verdict: if per-piece price decides it, buy AZO Vaginal Boric Acid Suppositories, 600 mg, 30 count, at $19.49 (verified via the Amazon Creators API on September 5, 2026), about $0.65 per suppository ($19.49 divided by 30). If owner consistency decides it, buy pH-D Feminine Health Boric Acid Suppositories, 600 mg, 36 count, at $26.97, about $0.75 each ($26.97 divided by 36). The two print the same strength, carry the same warnings, and are the two boric acid brands a pharmacist would recognize; the gap between them is a dime per piece and a longer, more uniform owner history on pH-D's side.
The comparison changes once you leave these two boxes. pH-D's 72 count bundle drops below AZO's per-piece price, and NutraBlast's Boric Life undercuts both by half. So the honest answer depends on how many you are buying and whether you have used the product before. We are a research and verification desk; we read labels, confirm live listings, and weigh owner reports. We do not use these products ourselves and we make no medical claims. No brand has paid for a placement, and if you buy through our links we may earn an Amazon commission at no extra cost to you.
The short version
- Read the box first: vaginal use only, never by mouth (poison if swallowed), keep from children, not in pregnancy or nursing, not on broken skin, see a clinician for diagnosis and if symptoms persist. Not FDA-approved to treat any condition.
- Both print 600 mg. AZO 30 count at $19.49 is about $0.65 each; pH-D 36 count at $26.97 is about $0.75 each. AZO wins the first-box price by a dime.
- pH-D's 72 count bundle at $41.99 is about $0.58 each, under AZO; pH-D wins once you are buying in volume.
- pH-D's owner history on capsule firmness is longer and more uniform; AZO's is close, with slightly more variation.
- If neither: NutraBlast Boric Life 30 at $9.96 is about $0.33 each, printed 600 mg, with thinner packaging per owners.
At a glance
| Product | Strength (per title) | Count | Per suppository | Brand type | Price (9/5/26) | Check price |
|---|---|---|---|---|---|---|
| AZO Vaginal Boric Acid, 30 ct | 600 mg | 30 | About $0.65 | Pharmacy brand | $19.49 | Check price on Amazon |
| pH-D Feminine Health, 36 ct | 600 mg | 36 | About $0.75 | Boric acid specialist | $26.97 | Check price on Amazon |
| NutraBlast Boric Life, 30 ct | 600 mg | 30 | About $0.33 | Value brand | $9.96 | Check price on Amazon |
The two subjects and the value third. Strength and count come from the Amazon listing title. Cost per suppository is computed where the title states the count. Prices verified via the Amazon Creators API on September 5, 2026.
AZO Vaginal Boric Acid Suppositories for Women, 600 mg, 30 Count
AZO
Printed 600 mg from the pharmacy brand, 30 for $19.49, about $0.65 each.
Our verdict: AZO takes the first-box comparison on price: about $0.65 per suppository against pH-D's $0.75, the same printed 600 mg, from the urinary-health brand every pharmacy stocks. Owner reports are close to pH-D's with a little more variation on capsule firmness at delivery. For a buyer who has read every warning and is choosing between these two boxes, AZO is the sensible default.
Verified: 600 mg boric acid per suppository, 30 count, AZO, labeled for vaginal odor and pH balance. Live at $19.49 on Amazon, verified via the Creators API on September 5, 2026.
The warnings, first. AZO Boric Acid Suppositories are for vaginal use only. Never take them by mouth; boric acid is poisonous if swallowed. Keep out of reach of children. Do not use if pregnant or nursing. Do not use on broken or irritated skin. Not FDA-approved to treat any condition. See a clinician for diagnosis, and stop and see a clinician if symptoms persist.
AZO's shelf around the suppository is oral: the Complete Feminine Balance daily vaginal probiotic at $23.12 and cranberry softgels at $10.97, both dietary supplements with structure/function labels that say nothing about the suppository. The brand write-up is the AZO boric acid review; the mechanics are in how to use a vaginal suppository.
Who should buy it
Buy AZO if you want printed 600 mg from a mainstream pharmacy brand at the lower per-piece price of the two, and you accept every box warning.
What we don't like
Slightly more variable firmness reports than pH-D, a 30 count first commitment, and no larger box in the catalog to bring the price down further.
- Active ingredient
- Boric acid (supplement; not FDA-approved to treat any condition)
- Strength
- 600 mg per suppository
- Count
- 30
- Form
- Vaginal suppository (gelatin capsule)
- Label ages
- Adults; keep out of reach of children; not for pregnancy or nursing
- Cost per suppository
- About $0.65 ($19.49 divided by 30)
- Packaging
- 30 count box
What we like
- About $0.65 each, a dime under pH-D
- Printed 600 mg from a pharmacy brand
- Wide retail distribution
Worth noting
- Slightly more variable firmness reports
- No larger box to lower the price
pH-D Feminine Health Boric Acid Suppositories for Women, 600 mg, 36 Count
pH-D Feminine Health
Printed 600 mg, 36 count, about $0.75 each, the most consistent owner history on the shelf.
Our verdict: pH-D costs a dime more per suppository at the 36 count and earns it with the shelf's longest and most uniform owner record on capsule firmness and packaging. It also has the box AZO does not: a 72 count bundle at about $0.58 each that beats AZO's price outright. Buy pH-D if consistency matters more than the dime, or if you already know the product and are buying in volume.
Verified: 600 mg boric acid per suppository, 36 count, labeled for vaginal odor and pH balance support. Live at $26.97 on Amazon, verified via the Creators API on September 5, 2026.
Identical warnings. pH-D Boric Acid Suppositories, 36 count are vaginal use only, never taken by mouth (poisonous if swallowed), kept from children, not for pregnancy or nursing, not for broken skin, and not FDA-approved to treat any condition. The label's lane is vaginal odor and pH support.
Owner reports describe pH-D's capsules arriving firm more consistently than any competitor's, an overnight dissolve, and the same watery morning discharge every boric acid brand produces. Full line notes are in the pH-D boric acid review; the plain-English background on the ingredient is in the boric acid suppositories guide.
Who should buy it
Buy pH-D if owner consistency matters more to you than a dime per piece, or if you have used it before and want the 72 count price that beats AZO.
What we don't like
About $0.75 each at the 36 count is more than AZO for the same printed strength, and the 24 count bundle is a trap at the same price as the 36.
- Active ingredient
- Boric acid (supplement; not FDA-approved to treat any condition)
- Strength
- 600 mg per suppository
- Count
- 36
- Form
- Vaginal suppository (gelatin capsule)
- Label ages
- Adults; keep out of reach of children; not for pregnancy or nursing
- Cost per suppository
- About $0.75 ($26.97 divided by 36)
- Packaging
- 36 count box
What we like
- Most consistent firmness reports on the shelf
- 72 count bundle beats AZO on price
- Widest product line
Worth noting
- A dime more per piece at the 36 count
- 24 count bundle is poor value
NutraBlast Boric Life Boric Acid Suppositories for Women, 600 mg, 30 Count
NutraBlast
Printed 600 mg, 30 count, $9.96: about $0.33 each, the cheapest credible box.
Our verdict: If the answer to AZO or pH-D is neither because both cost too much, NutraBlast Boric Life is the value brand with a real following: printed 600 mg, printed 30 count, about $0.33 each. Same warnings, same odor-and-pH label, more owner reports of soft capsules and thin packaging. It is what the extra money at the majors buys you: consistency.
Verified: 600 mg boric acid per suppository, 30 count, NutraBlast Boric Life. Live at $9.96 on Amazon, verified via the Creators API on September 5, 2026.
Warnings do not get cheaper. NutraBlast Boric Life is 600 mg boric acid, vaginal use only, never by mouth (poisonous if swallowed), kept from children, not for pregnancy or nursing, not for broken skin, and not FDA-approved to treat any condition.
Who should buy it
Buy NutraBlast if you want printed 600 mg at the lowest credible price and you do not need the majors' packaging consistency.
What we don't like
More owner reports of soft capsules on arrival and flimsier packaging than AZO or pH-D.
- Active ingredient
- Boric acid (supplement; not FDA-approved to treat any condition)
- Strength
- 600 mg per suppository
- Count
- 30
- Form
- Vaginal suppository (gelatin capsule)
- Label ages
- Adults; keep out of reach of children; not for pregnancy or nursing
- Cost per suppository
- About $0.33 ($9.96 divided by 30)
- Packaging
- 30 count bottle
What we like
- About $0.33 each
- Printed 600 mg and 30 count
Worth noting
- Softer capsules and thinner packaging per owners
What you'll need
The six things that go with a vaginal suppository: applicators, pH strips so you know what you are treating, a probiotic and a vitamin E option, a moisturizer, and a gentle wash. See a clinician for diagnosis. Prices are approximate at time of writing.
Strength and label: the same on both
Both listing titles print 600 mg of boric acid per suppository. Both labels describe the product for vaginal odor and pH balance, both carry the same warnings, and neither claims to treat anything. On the two facts a buyer can verify from the listing, strength and use statement, AZO and pH-D are identical. Everything below is about what the listing does not tell you.
Price per suppository, at every box each brand sells
All prices verified via the Amazon Creators API on September 5, 2026; cost per suppository computed only where the title states the count.
| Box | Strength (per title) | Count | Per suppository | Price (9/5/26) |
|---|---|---|---|---|
| NutraBlast Boric Life 30 ct | 600 mg | 30 | About $0.33 | $9.96 |
| pH-D original 72 ct | 600 mg | 72 | About $0.56 | $39.99 |
| pH-D 72 ct bundle | Not in this title | 72 | About $0.58 | $41.99 |
| AZO 30 ct | 600 mg | 30 | About $0.65 | $19.49 |
| pH-D 36 ct | 600 mg | 36 | About $0.75 | $26.97 |
| pH-D 24 ct bundle | Not in this title | 24 | About $1.12 | $26.99 |
Firmness, packaging and what owners report
The chemistry is the same, so the useful differences are physical. Gelatin capsules soften in heat, and owner reports over many years put pH-D ahead of every competitor on arriving firm; AZO is close behind, with somewhat more variation, and NutraBlast further back. A soft capsule can be firmed in the refrigerator before use, and both brands' capsules are described the same way once inserted: overnight dissolve, watery discharge in the morning, liner recommended. See what to do when a suppository melts and how to store suppositories.
Irritation: a minority of owners of both brands report burning, at similar rates, and the label's instruction is the same on both: stop and see a clinician. Applicators: neither box includes one; pH-D sells its own, AZO does not in this catalog, and the options are in the best vaginal suppository applicators.
Brand: pharmacy name versus specialist
AZO is a urinary-health brand with decades of pharmacy distribution; its boric acid suppository is one product in a line that is mostly oral (cranberry, D-mannose, probiotics). pH-D is a boric acid specialist whose whole line is built around the suppository: multiple counts, a moisturizing version, a hyaluronic acid product for dryness, applicators, a wash, wipes and a rinse. Neither fact changes what the suppository is or does. For a buyer who wants one product from a name they already trust, AZO's brand is the argument; for a buyer who wants the ecosystem, pH-D's is.
The verdict, by buyer
- Has read every warning, has a diagnosis, buying one box, price decides: AZO 30 count.
- Same, but consistency decides: pH-D 36 count.
- Has used pH-D before, buying in volume: the pH-D original 72 count, which prints 600 mg and beats AZO on price.
- Wants the cheapest credible box and accepts thinner packaging: NutraBlast Boric Life 30.
- Wants a small first box with 600 mg printed: neither of these; see pH-D vs Love Wellness for the 14 count.
- Pregnant, nursing, has a child in the house who could reach a capsule, or has not seen a clinician: neither, until those change.
More picks worth comparing
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Quick shop: every pick
Skip the scroll: the whole lineup, with a live price check on each.
- AZO Vaginal Boric Acid Suppositories for Women, 600 mg, 30 CountThe Better First-Box PriceAZO · $19.49Check price on Amazon
- pH-D Feminine Health Boric Acid Suppositories for Women, 600 mg, 36 CountThe More Consistent Box, and the Better Volume PricepH-D Feminine Health · $26.97Check price on Amazon
- NutraBlast Boric Life Boric Acid Suppositories for Women, 600 mg, 30 CountIf Neither: Half the Price, Thinner PackagingNutraBlast · $9.96Check price on Amazon
How we chose
Every box on this page went through the same checks. We confirmed each live Amazon listing and price through the Creators API on September 5, 2026, took strength and count from the listing title only, and computed cost per suppository only where the title states the count. We read each brand's label for the use statement and the warnings, and we weighed owner reports across both brands for the things that differ between near-identical boric acid products: firmness on arrival, leakage, irritation, and packaging. We do not use these products ourselves and we claim no clinical outcomes. No brand paid for this comparison.
Compliance for this shelf. Boric acid vaginal suppositories are not FDA-approved to treat any condition. We describe them as their labels do, for vaginal odor and pH balance support, and we never say they treat, cure or prevent bacterial vaginosis, yeast infections or anything else. Every box warns: vaginal use only, never by mouth, poisonous if swallowed, keep away from children, do not use if pregnant or nursing, do not use on broken skin, see a clinician for diagnosis and if symptoms persist. The oral products mentioned are dietary supplements. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Questions, answered
Is AZO or pH-D boric acid better?
They print the same 600 mg and carry the same warnings. On September 5, 2026, AZO 30 count at $19.49 is about $0.65 per suppository and pH-D 36 count at $26.97 is about $0.75, so AZO wins a single-box purchase on price. pH-D has the more consistent owner history on capsule firmness and a 72 count that beats AZO's price at volume. Neither is FDA-approved to treat any condition.
Are AZO and pH-D the same strength?
Yes. Both listing titles state 600 mg of boric acid per suppository. The strength does not decide the comparison and does not make either product a treatment for anything.
Does AZO boric acid treat BV or yeast infections?
No. Boric acid vaginal suppositories are not FDA-approved to treat any condition, and AZO's label describes the product for vaginal odor and pH balance, not as a treatment. See a clinician for a diagnosis before using any boric acid product, and stop and see a clinician if symptoms persist.
Can you take AZO or pH-D boric acid by mouth?
Never. Both are for vaginal use only, and boric acid is poisonous if swallowed. AZO in particular sells oral products (cranberry, D-mannose, probiotics) under the same brand, so store the suppositories away from them and out of reach of children. If one is swallowed, contact Poison Control immediately.
Which is cheaper per suppository?
On September 5, 2026: NutraBlast Boric Life 30, about $0.33; pH-D original 72 count, about $0.56; pH-D 72 count bundle, about $0.58; AZO 30, about $0.65; pH-D 36, about $0.75; pH-D 24 count bundle, about $1.12. AZO wins at one box each; pH-D wins at volume.
Can I use either while pregnant or breastfeeding?
No. Both labels say do not use if you are pregnant or nursing, and this site repeats that without exception. If you are pregnant or nursing and have symptoms, see your clinician.
Is AZO Complete Feminine Balance the same as AZO boric acid?
No. Complete Feminine Balance is an oral daily probiotic, a dietary supplement taken by mouth. The boric acid suppository is a separate product for vaginal use only. Do not confuse them, and never swallow the suppository.
Why is there discharge after using either one?
The gelatin capsule dissolves overnight and the contents mix with normal moisture, producing a watery, sometimes gritty discharge the next morning that owners of both brands describe identically. Insert at bedtime and wear a liner. Discharge that is foul-smelling, discolored, bloody, or accompanied by fever or pelvic pain is a different matter, and the labels say to see a clinician.
Filed under Comparison
Part of Vaginal Suppositories & Moisturizers · Head-to-Head Comparisons
Keep reading
Best Boric Acid Suppositories (2026), Ranked
pH-D, AZO, Love Wellness, Monistat Maintain and NutraBlast on one ranked page, every box warning first.
AZO Boric Acid Review
The pharmacy brand's suppository and the oral products that share its name.
pH-D Boric Acid Review
The reference brand's whole line, box by box, with the value math.
Boric Acid Suppositories: The Plain-English Guide
What boric acid is, what the labels say and do not say, and every warning.