I agree---inject. My son was 3 months old when my husband had to inject him. He had only been spitting up, etc for a day or so and he was keeping the med down, but then the lethargy set in. Our son is always kicking and moving his feet, but that day he slept way too much and the feet at diaper changing time were not moving. My husband called the Endo and he walked him through the injection. It was scary, but when we took him into the Endo's office he said when in doubt--inject. It won't hurt him.