Preparation H Spray: What’s In It And How It Works

Preparation H spray appeals to anyone who would rather not rub a cream onto sore, sensitive skin. It delivers the same numbing and swelling relief as the brand’s lidocaine cream in a format that goes on without touching, which is a real advantage for some people and a real consideration for others.

At South Fork Pharmacy in Moorefield, WV, we get questions about the spray from people who have tried creams and want something easier to apply. This guide explains what is in it, how it compares with the cream, who tends to prefer it, how to use it, and the label warnings that are specific to an aerosol. For a broader look at numbing sprays in general, see our guide to hemorrhoid spray with lidocaine.

What Preparation H Spray Is

The product is sold as Preparation H Rapid Relief Hemorrhoidal Spray with Lidocaine, usually in a 3.8 ounce can. It belongs to the Rapid Relief family, which is Preparation H’s line aimed at fast pain and burning relief. Other products in the family include a cream with the same active ingredients.

The spray is for external use only, on the skin around the anus. It is not meant to be sprayed inside the rectum. It is a symptom reliever, like the rest of the Preparation H line. It can make a flare-up much more comfortable, but it does not remove a hemorrhoid or prevent the next one.

The brand markets the spray as a no-mess, hands-free option, and that part is accurate. What the marketing does not change is the medicine. The active ingredients and their strengths match the cream, so the relief you can expect is similar. You are choosing a delivery method, not a stronger product.

It is also worth keeping a realistic timeline in mind. The numbing effect from lidocaine starts within minutes, which is why the spray is labeled “rapid relief,” but it typically lasts only an hour or two. The swelling reduction from phenylephrine lasts a few hours. Neither ingredient shortens the flare-up itself. Most hemorrhoid flares settle within about a week with home care, and the spray’s job is to make that week more comfortable, not to end it sooner.

Same Active Ingredients As The Cream, Different Delivery

The spray contains two active ingredients. Lidocaine at 5 percent is a local anesthetic, the highest strength allowed in OTC hemorrhoid products. It works by temporarily blocking nerve endings in the skin from sending pain, burning, and itching signals. Most people feel it working within a few minutes, and the effect usually lasts an hour or two.

Phenylephrine at 0.25 percent is a vasoconstrictor. It narrows small blood vessels in the area, which can temporarily reduce the swelling of inflamed hemorrhoidal tissue. That effect also wears off over a few hours. Together, the two ingredients target the two most common complaints of a flare-up, pain and swelling.

The inactive ingredients are where the spray differs. To make an aerosol, the formula includes a propellant, isobutane, along with alcohol and other ingredients that help the product spray and dry. Those ingredients are what make the product flammable, and the alcohol may cause a brief sting on raw or broken skin for some people. The cream uses a different base and does not carry the same flammability warning.

Why Some People Prefer The Spray Format

The biggest advantage is no touching. When the area is very sore, even gently rubbing in a cream can hurt. A spray goes on with no pressure on the skin, which many people find more comfortable during a painful flare. It also means no cream on your fingers and less cleanup.

It can be easier to reach the area. People with limited flexibility, arthritis in the hands, a back problem, or a larger body size sometimes find it difficult to apply a cream precisely. A spray can be aimed without the same reach. Some people also find it easier to use away from home, since it does not require washing cream off the fingers afterward.

There are tradeoffs. A spray is harder to control than a cream, so some product may land outside the area you intended. The can is bulkier than a small tube, and it costs more per use for some people. Because it is an aerosol, there are storage and handling rules that do not apply to a cream. Whether the spray is better depends on what matters most to you.

A good rule of thumb is to think about when you will use it. For a painful flare at home, when touching the skin hurts, the spray shines. For regular use on skin that is only mildly irritated, a cream is often easier to control and can be spread in a thinner, more even layer. Some people keep both, using the spray on the worst days and the cream otherwise, which is fine as long as you count every application toward the daily limit, since both contain the same active ingredients. Doubling up by using the spray and the cream at the same time adds more lidocaine and phenylephrine than the label intends.

The Flammability Warning Most Articles Miss

Most content about hemorrhoid relief is written with creams in mind, so it rarely mentions the one warning that is unique to the aerosol format. The Preparation H spray label warns that the product is flammable. It should not be used while smoking or near heat or an open flame, and the contents are under pressure, so the can should not be punctured or burned.

That is a practical concern, not a theoretical one. The spray contains isobutane, a flammable propellant, and alcohol, which is also flammable. After spraying, give the product time to dry on the skin before going near anything that could ignite it. That means not lighting a cigarette, candle, gas stove, or fireplace right after applying it, and not using it in a bathroom with a space heater running close by.

Storage matters too. Keep the can away from heat sources and out of direct sun, and never leave it in a hot car, where pressure inside the can can build. Do not throw it into a fire or incinerator, even when it seems empty. These are the same rules that apply to other aerosol cans in the home, but people do not always think of a hemorrhoid product that way.

If you smoke, use oxygen at home, or spend time around open flames, this warning is worth weighing when choosing between the spray and the cream. In South Fork Pharmacy’s experience, the cream is often the simpler choice for people who use home oxygen, since oxygen makes any fire risk much more serious.

How To Use It Correctly

When practical, clean the area gently after a bowel movement with mild soap and water or an unscented wipe, and pat it dry. Shake the can as directed, then hold it a few inches from the skin, following the distance on the label, and spray a short burst to lightly coat the affected area. Let it dry before dressing.

Position makes the spray easier to aim. Many people find it simplest to stand with one foot raised on the edge of the tub or toilet, or to lean forward slightly, so the area is easier to reach. Avoid spraying near the eyes, nose, or mouth, and do not inhale the spray. If some lands on clothing or surfaces, wipe it off, and remember the flammability warning until it has dried.

Use only as much as the label directs. For adults and children 12 and older, the label typically allows application up to four times a day. Children under 12 should not use it unless a doctor directs it. More spray, or more frequent spraying, does not bring more relief and increases the chance of skin irritation or side effects from the ingredients.

The same cautions apply as with the cream. Do not spray on large areas of broken skin, and do not use it inside the rectum. Stop and ask a doctor if symptoms have not improved within seven days, if bleeding occurs, or if you develop a rash, redness, or swelling that is new or getting worse.

Warnings And Who Should Be Cautious

Because the spray contains phenylephrine, the label advises asking a doctor before use if you have heart disease, high blood pressure, thyroid disease, diabetes, or difficulty urinating due to an enlarged prostate. Ask a doctor or pharmacist before use if you take a prescription medicine for high blood pressure or depression. Phenylephrine can affect blood pressure and heart rate in some people.

Because it contains lidocaine, avoid it if you are allergic to lidocaine or similar local anesthetics, and stop if you develop a rash, itching, or swelling that was not there before. Numbing agents can also hide worsening symptoms, so pay attention to how the area looks and feels, not only to the pain. Ask a doctor before use if you are pregnant or breastfeeding.

Add the aerosol-specific warnings to that list: flammable, contents under pressure, keep away from heat and flame. Never start, stop, or change a prescription because of an OTC product. Ask your doctor or pharmacist. You can reach our team through our pharmacy services page, and more reading is in our medication information section, including our guide to Preparation H with lidocaine.

Frequently Asked Questions

Is Preparation H spray stronger than the cream?

No. The spray contains the same active ingredients at the same strengths, 5 percent lidocaine and 0.25 percent phenylephrine, so the difference is the delivery method.

Is Preparation H spray really flammable?

Yes. The label warns it is flammable because of the propellant and alcohol, so let it dry and stay away from smoking, flames, and heat after use.

Does the spray sting?

Some people feel a brief sting, especially on raw or broken skin, likely from the alcohol in the formula. If stinging is severe or does not fade, stop using it and ask a pharmacist.

How often can I use Preparation H spray?

The label typically allows up to four times a day for adults and children 12 and older. See a doctor if symptoms have not improved within seven days.

Can I use the spray if I have high blood pressure?

Ask a doctor first, since phenylephrine can affect blood pressure. The pharmacists at South Fork Pharmacy can suggest options without phenylephrine if needed.

Can I spray it inside the rectum?

No, the spray is for external use only. Ask a pharmacist about products designed for internal symptoms.