Answer
The 500 ml Thornton & Ross Ltd product Phenobarbital Elixir BP uses an amber glass bottle with either a plastic cap with an EPE/Saranex liner or a white plastic child-resistant cap with an EPE/Saranex liner.
Sources for this answer
- Phenobarbital Elixir BPThornton & Ross Ltd · emc · SmPC §6.5 Nature and contents of container · Version 11Document updated
Sources checked