Rophegan
A Promethazine brand by May & Baker — tablet/syrup, made in Nigeria.
Ogbogwu is a reference directory quoting the NAFDAC register. We do not sell, dispense or prescribe medicines, and nothing here replaces a doctor or pharmacist.
NAFDAC registration
Our October 2026 copy of the NAFDAC Greenbook records the listing Rophegan Elixir (04-0290) with status “Expired”. Listings can lag renewals — confirm the current status on the official Greenbook before buying.
Current promethazine products in our October 2026 copy, if you need an alternative: Krisomine Syrup A11-100886, Labzine Elixir 04-4249, Metazine Syrup 04-7921. Every registered promethazine product →
Rophegan price in Nigeria
We hold no Rophegan listing of our own. Across all Promethazine products, online pharmacy listings ranged from ₦4,800 to ₦25,200 (median ₦13,300) as of October 2026.
Figures cover Promethazine products across brands and pack sizes, sampled from licensed Nigerian online pharmacies — indicative only. Track month-by-month movement on the Medicine Price Index.
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Rophegan at a glance
- Generic name
- Promethazine
- Manufacturer
- May & Baker
- Form
- Syrup
- Strength
- 5 mg/5 mL
- Made in
- Nigeria
- NAFDAC reg. no.
- 04-0290
About Promethazine
Promethazine is one of the most versatile and widely used medications in Nigeria, functioning as an antihistamine, anti-nausea agent, cough suppressant, and sedative all in one. It belongs to the phenothiazine class of first-generation antihistamines and works by blocking histamine H1 receptors throughout the body, which is responsible for its anti-allergy effects. Unlike newer second-generation antihistamines such as cetirizine and loratadine, promethazine readily crosses the blood-brain barrier, which accounts for its pronounced sedative effect. This sedation, while considered a side effect in many contexts, is actually one of the primary reasons promethazine is so popular in Nigeria — it is frequently used as a sleep aid and calming agent. Best known by its brand names Phenergan and Avomine, promethazine is stocked in virtually every pharmacy and patent medicine store from the busy Idumota market area in Lagos to neighbourhood chemists in Enugu, Kaduna, and Maiduguri.
Read the full Promethazine guide — dosage, side effects, warnings, and all registered brands.
Frequently asked questions
Registration details are shown exactly as recorded in the NAFDAC Greenbook (our copy: October 2026). Listings can lag renewals — always confirm current status on the official Greenbook before acting on it. Content updated October 2026.