784 S. Central Ave, Oviedo, FL 32765
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Compounded in OviedoDiphenhydramine oral liquid

Medication library / Diphenhydramine

Allergy and breathing

Diphenhydramine

For peopleFor petsLast updated 10/1/26
Available as
Oral liquidCapsuleMouthwash
Flavors
ChickenTunaBeefGrilled SalmonDuckBaconPeanut ButterMarshmallowCatnip
Start with a prescriptionPrescribers: how to send it

Pick up in Oviedo or ship within Florida. Most compounds ready same day to 24 hours.

  • Made to your prescription. Prepared in the strength your prescriber orders.
  • 3 dosage forms. Oral liquid, Capsule, Mouthwash.
  • Flavor options. Chicken, Tuna, Beef, Grilled Salmon, Duck and more.
  • Pharmacist access. Call and a person answers.
Made in our pharmacyPrescription required
What is Diphenhydramine?

A sedating antihistamine that blocks H1 receptors.

Why is it compounded?

Compounding lets us prepare Diphenhydramine in the exact strength your prescriber orders, in forms such as oral liquid, capsule, mouthwash. Flavoring helps pets and people take it more easily. We can also leave out dyes, fillers or allergens when needed.

Compounded medications are prepared from a valid prescription for an individual patient and are not FDA-approved. This page is for education and is not medical advice.

Getting your prescription filled is simple

  1. Send us the prescriptionYour prescriber e-prescribes, faxes or calls it in to Pharmacy on the Park.
  2. A pharmacist reviews itWe verify it, confirm the price and timing, and call you.
  3. We compound it for youPick up in Oviedo or we ship within Florida.

What is Diphenhydramine?

Allergies and itch; a common ingredient in mouthwash blends.

At Pharmacy on the Park, Diphenhydramine is compounded in our pharmacy from a prescription, in the strength and form your prescriber orders.

Compounded medications are not FDA-approved. They are prepared for one patient from a valid prescription. Any use may be off-label, and your prescriber decides whether it is right for you.

How does it work?

A sedating antihistamine that blocks H1 receptors.

What is it used for?

Allergies and itch; a common ingredient in mouthwash blends. Your prescriber determines the use, dose and monitoring.

How is it used?

  • Oral liquid. Oral liquids are shaken well and measured with the oral syringe we provide.
  • Capsule. Capsules are swallowed by mouth. For pets, a capsule can often be hidden in a small treat if your veterinarian agrees.
  • Mouthwash. Mouthwash is swished and then spit out or swallowed, exactly as directed.

Follow the directions on your label. The strength, amount and schedule are set by your prescriber.

Side effects and safety

Commonly reported: Drowsiness, dry mouth. Call your prescriber or us about any reaction that concerns you.

Who should use caution?

People or pets with glaucoma, urinary retention or heart disease, and older adults. Share your full medical history and medication list with your prescriber.

How should it be stored?

Check your label: some liquids are refrigerated. Shake well before each dose. Always follow the storage directions and beyond-use date on your label, and keep medications out of reach of children and pets.

Why is it compounded?

Compounding lets us prepare Diphenhydramine in the exact strength your prescriber orders, in forms such as oral liquid, capsule, mouthwash. Flavoring helps pets and people take it more easily. We can also leave out dyes, fillers or allergens when needed.

Diphenhydramine is also prepared in combination with Magic mouthwash, Sucralfate, Nystatin, Lidocaine. See combination preparations in our library.

Personalized compounding from a pharmacy that knows your name.

“The pharmacy world needs people who are fair, and I want to be as fair to as many people as possible.”

Ian Tasman, PharmD
Owner and pharmacist, Pharmacy on the Park

IT
Quality and testing

Held to a higher standard

  • AccreditedBy The Compliance Team.
  • USP <800> compliantSafe handling of hazardous drugs.
  • Meets USP <795>Nonsterile compounding standards.
  • Meets USP <797>Every sterile batch tested by Pharmetric Labs.
Our quality standards

Our formulations

Diphenhydramine is compounded to the strength your prescriber orders. These are the forms we have prepared.

FormFlavorsNotes
Oral liquidChicken, Tuna, Beef, Grilled Salmon, Duck, Bacon, Peanut Butter, Marshmallow, CatnipOral liquids are shaken well and measured with the oral syringe we provide
Capsule—Capsules are swallowed by mouth
Mouthwash—Mouthwash is swished and then spit out or swallowed, exactly as directed

Forms are listed for education only. A valid prescription is required, and your prescriber chooses the form, strength and schedule. Compounded medications are not FDA-approved.

For prescribers

How to e-prescribe Diphenhydramine

Compounded preparations have no NDC, so they won’t appear in a standard drug search. Use your system’s compound or free-text entry.

  1. Find Pharmacy on the Park in your pharmacy directory

    Search by NCPDP or by name and ZIP. Save us as a favorite.

    NCPDP 5747239NPI 1720664709784 S Central Ave, Oviedo, FL 32765Phone 407-977-9779Fax 407-977-0079
  2. Choose the preparation
    Diphenhydramine oral liquidDiphenhydramine capsuleDiphenhydramine mouthwash
    Rx: Diphenhydramine ___ (oral liquid)
Quantity: ___
Sig: ___
Refills: ___
Pharmacy: Pharmacy on the Park, 784 S Central Ave, Oviedo, FL 32765 · NCPDP 5747239 · Fax 407-977-0079
  3. Enter it as a compound

    Use compound, non-formulary or free-text entry and paste the details into the prescription body. Include strength, form, directions, quantity and flavor if needed.

  4. Send it

    Transmit from your EHR, fax it to 407-977-0079, or call 407-977-9779 to speak with a pharmacist. We’ll call the patient when it’s received.

Put the formula in the prescription itself, not in “Notes to pharmacy.” Some systems don’t transmit that field.

Frequently asked questions

What is Diphenhydramine?

A sedating antihistamine that blocks H1 receptors.

What is it used for?

Allergies and itch; a common ingredient in mouthwash blends.

What forms and flavors are available?

We have prepared it as oral liquid, capsule, mouthwash. Flavors include Chicken, Tuna, Beef, Grilled Salmon, Duck, Bacon, Peanut Butter, Marshmallow, Catnip.

What are the common side effects?

Drowsiness, dry mouth.

Who should use caution?

People or pets with glaucoma, urinary retention or heart disease, and older adults.

Are compounded medications FDA-approved?

No. Compounded medications are prepared for an individual patient from a prescription and are not FDA-approved.

Do I need a prescription?

Yes. Your prescriber sends the prescription to us and decides the strength and schedule.

Can you fill a prescription from my own prescriber?

Yes. Ask them to e-prescribe to Pharmacy on the Park (NCPDP 5747239), fax 407-977-0079 or call 407-977-9779.

Do you ship?

Yes, within Florida. You can also pick up at 784 S. Central Ave in Oviedo.

What is compounding?

Preparing a medication for one patient from a prescription when a commercial product isn’t the right strength, form or flavor.

Pickup and shipping

OptionWhereTiming
Pickup784 S. Central Ave, OviedoMost compounds same day to 24 hours
ShippingWithin FloridaWe confirm timing when your prescription arrives

Questions? Call 407-977-9779. A person will answer.

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References

  1. DailyMed (U.S. National Library of Medicine): drug labels for Diphenhydramine
  2. PubMed: published studies on Diphenhydramine
  3. MedlinePlus: patient information
  4. FDA: human drug compounding

General information about Diphenhydramine as an active ingredient, pending pharmacist review. Last updated 10/1/26. Pharmacy on the Park does not decide whether a medication is right for you; your prescriber makes that call.

Call us. A person will answer.

Tell us what you need and we'll help you get it handled, whether it's a transfer, a compound or a question for your pharmacist.

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