Bio D Mulsion Forte™ (Vitamin D3) - 1fl.oz (30ml) - BioTics Research
I haven't used it myself but several people have followed the link and say they are very pleased with it.

for other readers Source of 50,000iu cholecalciferol D3 if you take one of these every week it works out around 7000iu/daily.
One every 10 days = 5000iu/d.

the nearer you get to 10,000iu/daily the more important it becomes to check your 25(OH)D regularly. Dr Davis finds at latitude 43 his average female patient used 5000iu/d and men 6000iu/d to reach 60ng/mL 150nmol/l.