DayQuil Liquicaps
Complete cold relief with fever, cough, and decongestant.
Estimated: $11–15 per pack View Product
10mg tablets — nasal & sinus decongestant
Buy Phenylephrine HCl 10mg Tablets (24ct) Online — OTC Nasal & Sinus Decongestant
Order Phenylephrine 10mg — Relieve Nasal Congestion & Sinus Pressure from Colds and Allergies
Estimated: $9–13 per pack
10mg tablets, 24-count pack
Why Buy Phenylephrine 10mg from Promedic USA?
- ✓ Available without ID — no pseudoephedrine restrictions
- ✓ Fast-acting congestion relief within 15–30 minutes
- ✓ Can be combined with antihistamines for allergy-related congestion
- ✓ Non-drowsy formula — suitable for daytime use
- ✓ 24-count pack for full cold or allergy season coverage
- ✓ Effective for nasal AND sinus congestion
- ✓ Same ingredient as Sudafed PE
About Phenylephrine HCl 10mg Tablets (24ct) — Complete Product Guide
Phenylephrine HCl 10mg is an OTC nasal decongestant used to temporarily relieve nasal congestion, sinus pressure, and stuffy nose caused by the common cold, hay fever, upper respiratory allergies, and sinusitis. It is the active ingredient in Sudafed PE and is available without ID requirements (unlike pseudoephedrine-based decongestants). Phenylephrine works as a sympathomimetic agent that constricts nasal blood vessels.
What Conditions Does Phenylephrine 10mg Treat?
Phenylephrine 10mg is indicated for the relief of nasal congestion from colds and upper respiratory infections, sinus congestion and pressure, allergic rhinitis-related stuffy nose, acute sinusitis, eustachian tube congestion, and nasal swelling. It is approved for OTC use and does not require a prescription for standard adult doses.
How Does Phenylephrine 10mg Work?
Phenylephrine is an alpha-1 adrenergic receptor agonist. By stimulating alpha-1 receptors in the nasal mucosa, it causes vasoconstriction — narrowing the swollen blood vessels lining the nasal passages. This reduces blood flow to the nasal tissue, decreasing swelling and congestion. The result is improved airflow through the nasal passages and reduced sinus pressure. Onset occurs within 15–30 minutes; duration is approximately 4 hours.
Dosage and Usage Instructions
Adults and children 12 and over: Take 1 tablet (10mg) every 4 hours as needed. Do not exceed 6 tablets (60mg) in 24 hours. Do not use for more than 7 days. Do not crush or chew tablets. May be taken with or without food. If sinus pain or pressure is also present, consider a combination product with an analgesic.
Key Benefits of Phenylephrine 10mg
- Available without ID — no pseudoephedrine restrictions
- Fast-acting congestion relief within 15–30 minutes
- Can be combined with antihistamines for allergy-related congestion
- Non-drowsy formula — suitable for daytime use
- 24-count pack for full cold or allergy season coverage
- Effective for nasal AND sinus congestion
- Same ingredient as Sudafed PE
Who Can Use Phenylephrine 10mg?
Phenylephrine 10mg OTC is for adults and children 12 and older. Not recommended for people with high blood pressure, heart disease, thyroid disease, diabetes, or prostate problems without doctor approval — the sympathomimetic effect may worsen these conditions. Avoid if you take MAOIs or tricyclic antidepressants. Consult your doctor if pregnant or breastfeeding.
Possible Side Effects
Common side effects include nervousness, restlessness, headache, and increased blood pressure. Some users experience rapid or irregular heartbeat, dizziness, or insomnia. These effects are more common at higher doses. Avoid taking close to bedtime. Do not use with MAOIs or other decongestants. Stop use if heart palpitations occur.
Why Order Phenylephrine 10mg from Promedic?
Promedic is a licensed US online pharmacy committed to providing FDA-approved OTC medications at competitive prices. We source all products from reputable US-licensed distributors and manufacturers. Every order is handled with discretion, packaged securely, and shipped to all 50 states. Our pharmacy team is available to answer any questions about Phenylephrine 10mg or any other products in our inventory. Order with confidence — quality and customer service are our top priorities.
Frequently Asked Questions — Phenylephrine 10mg
Do I need a prescription to buy Phenylephrine 10mg?
No. Phenylephrine 10mg is an over-the-counter (OTC) medication available without a prescription for standard adult use.
How quickly will my order arrive?
We offer standard and expedited shipping to all 50 US states. Contact us for estimated delivery times to your location.
Is the generic version as effective as the brand name?
Yes. All OTC medications we carry must meet FDA quality and efficacy standards. Generic versions contain the same active ingredient at the same strength as their branded equivalents.
Frequently Asked Questions — Phenylephrine 10mg
How does phenylephrine work as a decongestant?
Phenylephrine is a sympathomimetic decongestant that works by constricting blood vessels in the nasal passages, reducing swelling and congestion. This opens the nasal airways for easier breathing. Effects begin within 30–60 minutes. Source: MedlinePlus: Phenylephrine.
How effective is phenylephrine vs pseudoephedrine?
Pseudoephedrine (behind-the-counter) has consistently shown stronger decongestant effects in clinical studies. In 2023, the FDA advisory panel concluded that oral phenylephrine is not effective as a nasal decongestant at OTC doses. Pseudoephedrine remains the gold standard oral decongestant — ask your pharmacist.
Can I take phenylephrine with blood pressure medication?
Use with caution — phenylephrine can raise blood pressure. It is generally not recommended for people with hypertension, heart disease, thyroid disease, or diabetes without consulting a doctor first. See FDA prescribing information.
How often can I take phenylephrine 10mg?
Adults: Take 1 tablet (10mg) every 4 hours as needed. Do not exceed 6 doses (60mg) in 24 hours. Do not use for more than 7 days. If nasal congestion does not improve, see a doctor — you may have a bacterial sinusitis requiring antibiotics.
What is the difference between phenylephrine and oxymetazoline (Afrin nasal spray)?
Oxymetazoline (Afrin) is a topical nasal spray that works faster (within minutes) and is more potent than oral phenylephrine. However, Afrin should not be used for more than 3 consecutive days due to rebound congestion. Oral phenylephrine is better for longer-term management of nasal congestion.
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