Periactin: What It Is and How It Works

Periactin is the brand name for cyproheptadine, a medication that blocks histamine and also lifts serotonin levels a bit. Doctors usually give it for allergy symptoms, itching, and sometimes to boost appetite in people who need extra calories. Think of it as a double‑acting antihistamine that can help with both sneezes and weight gain.

Common Uses and Dosage

The most frequent reason people take Periactin is for seasonal allergies – runny nose, watery eyes, and itchy skin. It’s also used for conditions like diffuse idiopathic skeletal hyperostosis (DISH) where appetite loss is a problem, especially in children or patients with chronic illnesses. The usual adult dose starts at 4 mg once a day, taken at bedtime because it can make you drowsy. Some doctors increase it to 4 mg twice daily if symptoms are stubborn.

For appetite stimulation, the dose is often 4 mg three times a day, but only under close medical supervision. Kids get a lower dose, usually based on weight – about 0.1 mg per kilogram, not exceeding 0.5 mg per kilogram per day. Always follow the prescription label; don’t guess your own amount.

Safety, Side Effects, and Precautions

Periactin can cause drowsiness, dry mouth, and sometimes a headache. If you feel overly sleepy, avoid driving or operating heavy machinery. Rarely, people get dizziness or a fast heartbeat. If any of these get worse or you notice a rash, call your doctor right away.

Because it affects serotonin, mixing Periactin with other antidepressants, especially SSRIs or MAO‑inhibitors, can raise the risk of serotonin syndrome – a serious condition with fever, confusion, and muscle stiffness. Tell your pharmacist about every medication you’re on, including over‑the‑counter sleep aids and herbal supplements.

Pregnant or breastfeeding mothers should only use Periactin if the doctor says it’s absolutely necessary. The drug passes into breast milk and could affect the baby’s sleep pattern.

When you start Periactin, it’s a good idea to keep a short symptom diary. Note any sleep changes, appetite shifts, or new aches. This helps your doctor adjust the dose quickly and avoids unnecessary side effects.

On this tag page, you’ll also see articles that touch on related topics – from buying generic meds online to managing sinus infections and allergy triggers. Those posts give extra tips on staying safe while ordering medication, spotting fake pharmacies, and handling common health issues that often go hand‑in‑hand with allergy medicines.

Bottom line: Periactin can be a handy tool for allergy relief and appetite boost, but it works best when you stick to the prescribed amount and stay aware of drowsiness and drug interactions. Keep the conversation open with your healthcare provider, and use the resources on MedSelected to stay informed about safe buying practices and complementary health advice.