Calmol 4 vs Preparation H (2026 Comparison)
Medically reviewed by Dr. Robert William, MD · Written by Kevin Schwaner · Updated July 2026
Quick Answer
These products serve different hemorrhoid locations. Calmol 4 is a suppository built on zinc oxide and cocoa butter, designed to protect and soothe internal hemorrhoids from the inside. Preparation H is primarily an external lineup, though it also sells suppositories of its own. For internal hemorrhoids, the suppository format is the right delivery method and the two brands’ suppositories are close cousins; for external hemorrhoids, Preparation H’s creams and ointments are the relevant tools and Calmol 4 is not designed for the job. Availability tilts the decision too: Preparation H is on every shelf, while Calmol 4 can be harder to find.
| Calmol 4 Suppositories | Preparation H Ointment | Preparation H Suppositories | |
|---|---|---|---|
| Format | Suppository | Ointment (external + applicator) | Suppository |
| Active ingredients | Zinc oxide, cocoa butter | Phenylephrine HCl 0.25% | Phenylephrine, cocoa butter |
| Mechanism | Protectant and astringent barrier | Vasoconstrictor + protectant | Vasoconstrictor + protectant |
| Best for | Internal hemorrhoid irritation | External swelling and protection | Internal hemorrhoids with swelling |
| Numbing | No | No | No |
| Reduces swelling | Mildly, via protection | Yes | Yes |
| Availability | Can be harder to find | Everywhere | Most pharmacies |
| Price | About $10 to $15 per box | About $8 to $15 | About $10 to $16 |
| Treats root cause | No | No | No |
What Is Calmol 4?
Calmol 4 is one of the older names in the category: a hemorrhoidal suppository whose formula centers on zinc oxide and cocoa butter. It is a protectant-and-astringent approach. The cocoa butter base melts at body temperature and coats internal tissue, zinc oxide forms a mild protective, drying barrier over irritated mucosa, and together they shield internal hemorrhoids from stool friction while calming weepy, inflamed tissue.
What Calmol 4 does not contain is as important as what it does: no vasoconstrictor, no anesthetic, no steroid. It will not actively shrink swollen vessels or numb pain. Its lane is soothing protection for internal irritation, and within that lane it has kept a loyal following for decades, particularly among people who find phenylephrine products irritating or who prefer a gentler ingredient list. The practical caveat is availability: Calmol 4’s shelf presence has thinned over the years, and depending on your area it may be an order-online product rather than a drive-to-the-pharmacy product.
What Is Preparation H?
Preparation H is the default brand of the category, with a lineup that touches every format. The flagship ointment pairs phenylephrine HCl 0.25%, a vasoconstrictor that reduces swelling over days of use, with a petrolatum barrier base, and it can be applied externally or internally with the included applicator. The brand’s own suppositories deliver phenylephrine internally in a cocoa butter style base, making them the closest direct rival to Calmol 4. Creams with lidocaine, pramoxine, or hydrocortisone cover pain and itch externally, and witch hazel wipes cover cleansing.
The lineup’s strength is that whatever the symptom and location, there is a Preparation H product aimed at it, available tonight, almost anywhere.
Suppository vs Ointment: Which Format for Internal Hemorrhoids?
For genuinely internal hemorrhoids, suppositories are the format designed for the job. They deliver ingredients past the anal canal to the tissue itself, melt in place, and keep working without the mess and imprecision of pushing an ointment applicator to depth. Ointments with applicators reach the lower canal adequately and are fine for hemorrhoids at or near the opening, but for higher internal irritation the suppository wins on delivery. Our hemorrhoid ointment vs cream guide covers the external format choice.
One clinical honesty note that belongs on any suppository page: internal hemorrhoids arising above the dentate line have few pain nerves, which is why they usually present as bleeding or prolapse rather than pain. If your symptom is significant pain, the problem is usually external or at the verge, and an external product (or a doctor visit) is more relevant than any suppository.
Calmol 4 vs Preparation H Suppositories: The Direct Matchup
Since this is the true apples-to-apples comparison, run it directly. Calmol 4 protects: zinc oxide plus cocoa butter, gentle and simple. Preparation H suppositories protect and constrict: cocoa butter delivery plus phenylephrine to actively reduce swelling.
If swelling and prolapse sensation are the complaint, phenylephrine gives Preparation H’s version a mechanism Calmol 4 lacks. If irritation, weepiness, and sensitivity are the complaint, or phenylephrine causes stinging for you, Calmol 4’s gentler protectant formula is the pick. Price is comparable; availability favors Preparation H.
Where Both Brands Stop
Suppository or ointment, zinc oxide or phenylephrine, everything on this page manages symptoms where they surface. None of it reaches the cause: weakened veins under repeated pressure. Internal hemorrhoids in particular are driven by straining, and no suppository changes what happens on the toilet tomorrow morning.
The complete routine:
- Cleanse with medicated wipes after every bowel movement
- Treat by location: suppositories for internal irritation, the right cream for external symptoms (lidocaine 5% for pain, phenylephrine for swelling)
- Support internally with a daily oral supplement such as HemRid Max, delivering botanicals like horse chestnut and the citrus flavonoid hesperidin at doses studied for vein health, reaching vein tissue no topical or suppository can
- Prevent with daily fiber, the single most evidence-backed step for internal hemorrhoids, since soft stools remove the straining that drives them
The HemRid Complete Care Bundle covers the routine in one order with a 120-day money-back guarantee.
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.
Frequently Asked Questions
What is in Calmol 4 suppositories?
Calmol 4 is built on zinc oxide and cocoa butter. Zinc oxide forms a mild protective barrier over irritated tissue and cocoa butter carries it, melting at body temperature. It contains no vasoconstrictor, anesthetic, or steroid.
Is Calmol 4 better than Preparation H?
For gentle protection of irritated internal tissue, Calmol 4’s simple protectant formula is a fine choice. For active swelling reduction, Preparation H’s phenylephrine products, including its suppositories, have a mechanism Calmol 4 lacks. Match the product to the dominant symptom.
Are suppositories better than cream for internal hemorrhoids?
For hemorrhoids genuinely inside the canal, yes: suppositories deliver ingredients directly to internal tissue and stay in place as they melt. Ointments with applicators reach the lower canal; creams are largely external tools.
Do hemorrhoid suppositories actually work?
They reliably deliver protectants and, in some formulas, vasoconstrictors to internal tissue, which soothes irritation and can reduce swelling over days. They do not remove hemorrhoids or address the underlying vein weakness, and painless bleeding attributed to internal hemorrhoids should be evaluated by a doctor at least once.
How do you use a hemorrhoid suppository?
Ideally after a bowel movement and cleansing: lie on your side, insert the suppository pointed end first past the sphincter, and remain lying for a few minutes while it melts. Follow the specific product’s label for frequency, typically up to the stated daily maximum.
Why do internal hemorrhoids bleed but not hurt?
Tissue above the dentate line has few pain-sensing nerves, so internal hemorrhoids typically announce themselves through painless bright red bleeding or prolapse rather than pain. Painful hemorrhoids are usually external. Any rectal bleeding deserves a one-time medical evaluation to confirm the source.
Cleanse, treat, support, prevent · 120-day money-back guarantee
Sources
- FDA OTC monograph: anorectal drug products (protectants: zinc oxide, cocoa butter; vasoconstrictors)
- NIH / NIDDK: Hemorrhoids symptoms and causes
- ASCRS clinical practice guidelines: management of hemorrhoids