01Does surgery stop a worn patch?
Transdermal therapy should not be interrupted during the surgical period. Starting a first patch for surgery is a poor plan because levels take 2 to 3 days.
Tablet perioperative timing (within 4 hours) sits on the stop-taper probe. Different product, different clock.
02If the patch rashes, can I just switch to 0.1 mg tablets?
Localized contact sensitization to transdermal clonidine can be followed by a generalized rash if oral clonidine is substituted.
Allergic reaction to the patch can also appear after oral substitution, including generalized rash, urticaria, or angioedema. Tell the clinician about the skin history.
03Why not swap on the same afternoon?
Antihypertensive effect of the patch may not begin until 2 to 3 days after initial application. Prior oral doses may need a gradual reduction.
Some or all previous antihypertensive treatment may have to continue, especially in more severe hypertension. That overlap is a clinic plan.
04Can a child be poisoned by a used patch?
Rare cases of poisoning from mouthing or ingesting a patch have been reported, many in children. Used systems still hold drug.
Fold and discard used patches away from children and pets. A 0.1 mg tablet bottle has its own child-toxicity line; the patch has this one.
05What is on each carton?
Immediate tablets: 0.1 mg, 0.2 mg, 0.3 mg swallowed, usually twice daily at the start.
Transdermal systems: 0.1, 0.2, or 0.3 mg per day for one week, applied to a fresh skin site at weekly intervals.
06What happens if the patch falls off?
Plasma clonidine persists about 8 hours after removal, then declines slowly over several days. Blood pressure returns gradually toward pretreatment levels.
Do not swallow extra 0.1 mg tablets to 'match' a loose patch unless the prescriber says so. Residue can still deliver.