Donecept
Donecept (Donepezil 5/10 mg) — Cipla brand cholinesterase inhibitor for Alzheimer’s disease. Slow titration from 5 mg to 10 mg after 4 weeks. Once daily evening dosing.
✓ Medically reviewed by Morgan Ellis — Pharmacy Researcher · 8 years experience · Last reviewed: May 2026
Quick Answer
Donecept — donepezil 5/10 mg (Cipla Inc). Reversible centrally-acting acetylcholinesterase inhibitor for mild, moderate, and severe Alzheimer’s disease and dementia in Parkinson’s. Modest symptomatic improvement in cognition and ADLs; does not slow disease progression.
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Donepezil produces a modest, short-lived improvement in cognition (typically 2-4 points on the ADAS-cog) and may delay nursing-home placement. It does NOT slow underlying neurodegeneration. Effect plateaus and benefits may wear off over 6-24 months. Discuss realistic goals with the family before starting.
Dosing
| Indication | Dose |
|---|---|
| Mild-moderate Alzheimer’s | 5 mg at bedtime × 4 weeks → 10 mg at bedtime |
| Severe Alzheimer’s | 10 mg/day; some clinicians titrate to 23 mg/day (where available) |
| Parkinson’s dementia / DLB | 5-10 mg/day at bedtime |
Take in the evening with or without food. The 23 mg formulation must be swallowed whole; the 5/10 mg tablets can be crushed if needed.
Side effects
- Cholinergic GI (most common, dose-related): nausea, vomiting, diarrhoea, anorexia, weight loss
- CNS: insomnia (try morning dosing if persistent), vivid dreams, dizziness, fatigue
- Cardiac: bradycardia, syncope, AV block — caution with sick-sinus syndrome or pre-existing conduction defects; avoid combining with non-DHP CCBs or beta blockers without monitoring
- Other: urinary incontinence (rare), seizure threshold lowering, NSAID-augmented GI bleed
Drug interactions
- Strong anticholinergics: oxybutynin, hyoscine, TCAs, first-gen antihistamines — directly antagonise donepezil; avoid combining if possible
- Bradycardic drugs: beta blockers, non-DHP CCBs (verapamil/diltiazem), digoxin — increased bradycardia/AV block risk; monitor
- NSAIDs: increased GI bleed risk
- CYP2D6 + CYP3A4 inhibitors: ketoconazole, paroxetine, fluoxetine — modest rise in donepezil levels; usually clinically insignificant
- Succinylcholine (anaesthesia): prolonged neuromuscular block — tell the anaesthetist about donepezil use before any surgery
Frequently Asked Questions
How quickly will I see improvement?
Cognitive and behavioural benefits, when they appear, are typically modest and emerge over 6-12 weeks. Some patients show no measurable benefit; this is expected and not a treatment failure.
When should it be stopped?
Stop if there is no perceived benefit after 3-6 months at the maximum tolerated dose, or if side effects (especially weight loss) outweigh benefit. Some clinicians continue into late-stage disease — the evidence is mixed.
Can it be combined with memantine?
Yes — combination therapy (donepezil + memantine) is approved and commonly used in moderate-to-severe disease. Memantine targets glutamate (NMDA) receptors, donepezil targets acetylcholine — different mechanisms, additive benefit, no major drug interactions.
Insomnia?
Donepezil can cause vivid dreams and insomnia. If persistent, switch to morning dosing.
Will it slow Alzheimer’s?
No. It is a symptomatic treatment. Underlying neurodegeneration continues. Newer disease-modifying agents (lecanemab, donanemab) do reduce amyloid plaques but are separate, expensive, infusion-based therapies with their own risks.
What about bradycardia?
Get a baseline ECG before starting if you have known heart conduction issues, are on beta blockers, or have unexplained syncope. Donepezil enhances vagal tone and rarely causes AV block.
Can my partner stop using anticholinergic OAB drugs?
If your loved one is on donepezil for Alzheimer’s, anticholinergic OAB drugs (oxybutynin, tolterodine) directly oppose the donepezil effect AND independently worsen cognition. Mirabegron (beta-3 agonist) is preferred for OAB in dementia patients.
What if a dose is missed?
Skip the missed dose and resume the normal schedule. Do not double up. If multiple doses (more than a few days) are missed, restart at the lower 5 mg dose to avoid GI side effects.
Can I drink alcohol?
Modest alcohol is acceptable. Heavy alcohol worsens cognitive decline independently of donepezil and should be discouraged.
Surgery and anaesthesia?
Tell the anaesthetist about donepezil — it prolongs the action of succinylcholine and other neuromuscular blockers. Some surgeons prefer to pause donepezil 24-48 hours before elective surgery; do this only on specialist advice.
Other Alzheimer’s & Dementia Medications
- Nemdaa — memantine 5/10 mg — NMDA antagonist for moderate-severe disease
- Donamem — donepezil + memantine fixed combo
- Alzil — donepezil 5/10 mg — alternative brand
- Donecept — donepezil 5/10 mg — Cipla brand
- Donep — donepezil 5/10 mg — Alkem brand
More options in Alzheimer's Treatment
Ranked by recent MedsBase order volume — what other customers in this category are picking.
| Strength | 5 mg, 10 mg |
|---|---|
| Quantity | 30 Tablet/s, 60 Tablet/s, 90 Tablet/s |
| Pharma Form | Tablet/s |
| Manufacturer | Cipla Inc |
| Treatment | Alzheimer's Disease |
| Generic Brand | Donepezil |
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