Plan B after 60: doses and safety in older adults
Older adults metabolise medications differently, accumulate more comorbidities and take more concomitant drugs than younger users — all of which affect how Plan B (Levonorgestrel) should be prescribed and used after age 60. The standard 1.5mg starting strengths are usually adjusted, and the safety priorities shift.
Dose adjustments after 60
According to the prescribing information, most adults over 65 start Plan B at the lowest available strength of 1.5mg and titrate up only with clear benefit and good tolerance. Reduced renal and hepatic function in older age slows clearance of Levonorgestrel and prolongs effects. Caution is greater in the very old (>75).
Specific risks to consider
Falls, postural hypotension, confusion and interaction with cardiovascular medications are the main amplified risks for Plan B after 60. Plan B's primary mechanism is delaying or preventing ovulation when taken before the LH surge. A standing blood pressure check after the first weeks of therapy is a simple, useful precaution.
Frequently asked questions
Is Plan B safe at 70 or 80? ▾
For many older adults, Plan B can be used safely at the lowest 1.5mg dose with monitoring. Comorbid heart disease, kidney impairment, polypharmacy or recent falls are reasons for extra caution and lower starting doses. The prescriber individualises the decision.
Does Plan B interact with common elderly medications? ▾
Yes — Plan B can interact with antihypertensives, nitrates, certain antidepressants and a number of cardiac medications often prescribed in older adults. According to the prescribing information for Levonorgestrel, the full medication list should be reviewed with the prescriber before starting and at any change.
More on Plan B
- With alcoholPlan B and alcohol — is it safe to drink?
- With foodShould Plan B be taken with food?
- Side effectsPlan B side effects: common, rare and warning signs
- Dosage guidePlan B dosage guide: how much to take and when
- OnsetHow fast does Plan B start working?
- DurationHow long does Plan B last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.