Police seized 2,700 bottles of cough medicine and some 9,000 tablets of impotence drugs, including Viagra, and tranquillisers, worth a total of HK$530,000 in two raids in Causeway Bay yesterday morning. Acting on a tip-off, officers first raided a flat on Hennessy Road at about 8am and arrested a man, 31. They then raided a pharmacy where the man worked and arrested a 23-year-old. Police believed the drugs were sold without prescriptions.